CN113542984B - Stereo realization system, method, electronic device and storage medium - Google Patents

Abstract

The present application relates to the field of intelligent audio playing, and in particular, to a stereo sound implementation method, an electronic device, and a storage medium. The method comprises the following steps: the audio transmitting device calculates a first distance between the audio transmitting device and the first audio receiving device according to a first broadcast signal transmitted by the first audio receiving device, calculates a second distance between the audio transmitting device and the second audio receiving device according to a second broadcast signal transmitted by the second audio receiving device, and calculates a sound digital signal regulation proportionality coefficient according to the first distance and the second distance. The audio sending device adjusts the volume of first stream data of the PCM audio data according to the sound digital signal adjustment proportionality coefficient, the first stream data after volume adjustment is sent to the first audio receiving device to be played, and second stream data of the PCM audio data is sent to the second audio receiving device to be played. The method and the device can solve the technical problem that the monophonic sound file cannot play stereophonic sound.

Description

Stereo realization system, method, electronic device and storage medium

technical field

The present application relates to the technical field of audio playback, and in particular, to a stereo implementation system, method, electronic device and storage medium.

Background technique

In order to play the spatial stereo effect, the audio source file of the Bluetooth headset needs to include left and right ear channel data, so that the Bluetooth headset can play the spatial stereo effect when playing the audio file. However, the vast majority of sound source files in the industry are mono sound files, which cannot obtain spatial stereo effects during playback. In addition, when the existing Bluetooth audio distribution profile (Advanced Audio Distribution Profile, A2DP) performs volume adjustment, if the volume adjustment mode of the main ear of the Bluetooth headset and the volume adjustment mode of the auxiliary ear are different, the mobile phone will adjust the volume of the Bluetooth headset. The volume adjustment mode of the main ear and the auxiliary ear is switched from the absolute volume to the normal volume, which causes the inconsistency of the volume adjustment of the Bluetooth headset or the problem of sudden sound effects. For example, when the mobile phone is first connected to the earphone in the normal volume mode, the volume of the earphone in the absolute volume mode will suddenly decrease. For another example, when the mobile phone is connected to the earphone in the absolute volume mode first, the volume of the earphone in the normal volume mode will suddenly increase.

SUMMARY OF THE INVENTION

In view of the above content, it is necessary to provide a stereo system, method, electronic device and storage medium to solve the technical problem that monophonic sound files cannot play stereo.

In a first aspect, an embodiment of the present application provides a stereo implementation system, the system includes: an audio sending device, configured to: scan and receive a first broadcast signal sent by a first audio receiving device, and according to the first broadcast signal The transmitted power carried determines the space loss of the first broadcast signal; obtains the carrier frequency of the first broadcast signal, and calculates the relationship between the audio transmission device and the first broadcast signal according to the carrier frequency and space loss of the first broadcast signal. the first distance between the audio receiving devices; scan and receive the second broadcast signal sent by the second audio receiving device, and determine the space loss of the second broadcast signal according to the transmit power carried by the second broadcast signal; obtain the the carrier frequency of the second broadcast signal, and calculate the second distance between the audio transmitting device and the second audio receiving device according to the carrier frequency and the space loss of the second broadcast signal; according to the first distance and The second distance calculates the sound digital signal adjustment scale factor; obtains pulse code modulation (Pulse Code Modulation, PCM) audio data, divides the PCM audio data into first stream data and second stream data, and adjusts the ratio according to the sound digital signal The coefficient adjusts the volume of the first stream data to obtain the first stream data after the volume adjustment; sending the first stream data after the volume adjustment to the first audio receiving device, and sending the second stream data to the second audio receiving device; The first audio receiving device is configured to: send a first broadcast signal carrying transmission power to the audio transmitting device; respond to the received first stream data after the volume adjustment, and play the first stream data after the volume adjustment. stream data; the second audio receiving device is used for: sending a second broadcast signal carrying transmit power to the audio sending device; responding to the received second stream data, and playing the second stream data. The present application calculates the sound digital signal adjustment proportional coefficient according to the distance between the audio transmission device and the audio receiving device, adjusts the volume of the first stream data according to the sound digital signal adjustment proportional coefficient, and sends the volume-adjusted first stream data to the first stream data. The audio receiving device sends the second stream data to the second audio receiving device, so that there is a difference between the first stream data after volume adjustment and the second stream data, so that the first audio receiving device is playing the first stream data and the second stream data. The audio receiving device generates a spatial stereo effect when playing the second stream data.

In an implementation manner, the acquiring PCM audio data, splitting the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data The method includes: in response to an operation of playing an audio file, acquiring the PCM audio data in the audio file, and splitting the PCM audio data in the audio file into the first stream data and the second stream data. In the above technical solution, the PCM audio data in the audio file can be divided into the first stream data and the second stream data by performing the operation of playing the audio file.

In an implementation manner, the operation of playing the audio file includes an operation of clicking a play button on the user interface of the music playing application or the video playing application. Through the above technical solution, when the play button on the user interface of the music playing application or the video playing application is clicked, the PCM audio data in the audio file is divided into the first stream data and the second stream data.

In an implementation manner, the dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: the The Bluetooth protocol stack interface module of the audio transmission device divides the PCM audio data to obtain the first stream data and the second stream data, and adjusts the volume of the first stream data according to the sound digital signal by adjusting the proportional coefficient to obtain the first stream after the volume adjustment. Stream data; the Bluetooth protocol stack interface module combines the volume-adjusted first stream data and the second stream data into volume-adjusted PCM audio data, and transmits the volume-adjusted PCM audio data to The Bluetooth protocol stack application layer module of the audio transmission device; the Bluetooth protocol stack application layer module transmits the volume-adjusted PCM audio data to the Bluetooth protocol stack module of the audio transmission device; the Bluetooth protocol stack module The PCM audio data after volume adjustment is encoded according to a preset encoding method to obtain encoded PCM audio data. Through the above technical solution, the volume adjustment of the PCM audio data can be completed before the encoding of the PCM audio data, thereby improving the stereo effect when the PCM audio data is played.

In an implementation manner, the Bluetooth protocol stack module sending the volume-adjusted first stream data to the first audio receiving device, and sending the second stream data to the second audio receiving device includes: sending the volume-adjusted first stream data in the encoded PCM audio data to the first audio receiving device, and sending the second stream data in the encoded PCM audio data to the first audio receiving device A second audio receiving device. Through the above technical solution, the encoded PCM audio data is sent to the first audio receiving device and the second audio receiving device through the Bluetooth protocol stack module.

In an implementation manner, the preset encoding method is a subband encoding method.

In an implementation manner, the dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: the When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device and the volume adjustment mode of the second audio receiving device are absolute volume adjustment modes, adjust the proportional coefficient adjustment according to the sound digital signal The volume of the first stream data obtains the volume-adjusted first stream data. Through the above technical solution, when determining that the volume adjustment mode of the first audio receiving device and the volume adjustment mode of the second audio receiving device are absolute volume adjustment modes, the bluetooth protocol stack interface module adjusts the The volume of the first-stream data, so that there is a difference between the first-stream data and the second-stream data after volume adjustment, so that the first audio receiving device generates space when playing the first-stream data and the second audio-receiver is playing the second-stream data Stereo effect.

In an implementation manner, the dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: the When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is an absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is a non-absolute volume adjustment mode, obtain the audio The volume gain of the transmitting device; adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data, and adjusting the second stream data according to the volume gain of the audio transmitting device to obtain Volume-adjusted second stream data. Through the above technical solution, when the Bluetooth protocol stack interface module determines that the volume adjustment mode of the first audio receiving device is the absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode, according to the audio transmission device The volume gain of the device adjusts the volume of the second stream data, so that the volume of the second audio receiving device does not suddenly increase when playing the second stream data, thereby solving the problem of sudden sound effects when the second audio receiving device plays the second stream data.

In an implementation manner, dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is a non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is an absolute volume adjustment mode, obtain the The volume gain of the audio transmission device is adjusted, and the volume of the first stream data is adjusted according to the sound digital signal and the volume gain of the audio transmission device to obtain the volume-adjusted first stream data. Through the above technical solution, when the Bluetooth protocol stack interface module determines that the volume adjustment mode of the first audio receiving device is the absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode, according to the sound digital signal Adjust the scale factor and the volume gain of the audio transmitting device to adjust the volume of the first stream data, so that the volume of the first audio receiving device when playing the first stream data will not suddenly increase, thereby solving the problem of sound effects when the first audio receiving device plays the first stream data. mutation problem.

In an implementation manner, dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is a non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is a non-absolute volume adjustment mode, obtain The volume gain of the audio transmission device; adjusting the proportional coefficient according to the sound digital signal and the volume gain of the audio transmission device by adjusting the volume of the first stream data to obtain the volume-adjusted first stream data, and according to the The volume gain of the audio sending device adjusts the volume of the second stream data to obtain volume-adjusted second stream data. Through the above technical solution, the Bluetooth protocol stack interface module adjusts the ratio according to the sound digital signal when determining that the volume adjustment mode of the first audio receiving device is the non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode The coefficient and the volume gain of the audio transmitting device adjust the volume of the first stream data, and adjust the volume of the second stream data according to the volume gain of the audio transmitting device, so that the first audio receiving device is playing the first stream data and the second audio receiving device is playing The volume of the second stream data will not suddenly become louder.

In an implementation manner, the system further includes: the Bluetooth protocol stack interface module of the audio transmission device combines the volume-adjusted first stream data and the second stream data into volume-adjusted PCM audio data , or combine the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data, and transmit the volume-adjusted PCM audio data to the audio transmitter The Bluetooth protocol stack application layer module of the device; the Bluetooth protocol stack application layer module transmits the PCM audio data after the volume adjustment to the Bluetooth protocol stack module of the audio sending device; the Bluetooth protocol stack module The adjusted PCM audio data is encoded according to a preset encoding method to obtain encoded PCM audio data. Through the above technical solution, the Bluetooth protocol stack module encodes the PCM audio data after volume adjustment according to a preset encoding method to obtain the encoded PCM audio data.

In an implementation manner, the scanning and receiving the first broadcast signal sent by the first audio receiving apparatus, and determining the space loss of the first broadcast signal according to the transmit power carried by the first broadcast signal includes: obtaining the the transmit power of the first broadcast signal; obtain the receive power of the first broadcast signal; calculate the difference between the transmit power of the first broadcast signal and the receive power of the first broadcast signal to obtain the first broadcast signal space loss. Through the above technical solution, the space loss of the first broadcast signal is obtained by calculating the difference between the transmit power of the first broadcast signal and the received power of the first broadcast signal.

In an implementation manner, the calculating the first distance between the audio sending device and the first audio receiving device according to the carrier frequency and the space loss of the first broadcast signal includes: according to the formula D1=10^ ((Losdb1-32.45-20×log10(F1))/20) is calculated to obtain the first distance, where Losdb1 is the space loss of the first broadcast signal, F1 is the carrier frequency of the first broadcast signal, D1 is the first distance. Through the above technical solution, the first distance is calculated according to the formula D1=10^((Losdb1-32.45-20×log10(F1))/20).

In an implementation manner, scanning and receiving the second broadcast signal sent by the second audio receiving apparatus, and determining the space loss of the second broadcast signal according to the transmit power carried by the second broadcast signal includes: acquiring the first broadcast signal. 2. the transmit power of the broadcast signal; obtain the receive power of the second broadcast signal; calculate the transmit power of the second broadcast signal and the receive power of the second broadcast signal to determine the space loss of the second broadcast signal. Through the above technical solution, the space loss of the second broadcast signal is determined by calculating the transmit power of the second broadcast signal and the received power of the second broadcast signal.

In an implementation manner, the calculating the second distance between the audio sending device and the second audio receiving device according to the carrier frequency and the space loss of the second broadcast signal includes: according to the formula D2=10^ ((Losdb2-32.45-20×log10(F2))/20) to calculate the second distance, where Losdb2 is the space loss of the second broadcast signal, F2 is the carrier frequency of the second broadcast signal, D2 is the second distance. Through the above technical solution, the second distance is calculated according to the formula D2=10^((Losdb2-32.45-20×log10(F2))/20).

In an implementation manner, the calculating the sound digital signal adjustment proportional coefficient according to the first distance and the second distance includes: calculating the sound analog signal adjustment proportional coefficient according to the formula A=20log10(D1/D2), Wherein D1 is the first distance, D2 is the second distance, A is the sound analog signal adjustment proportional coefficient; According to the formula K=10^(A/20), the sound digital signal adjustment proportional coefficient is calculated, wherein K A scaling factor is adjusted for the audio digital signal. Through the above technical solution, the digital sound signal adjustment scale factor is calculated according to the formula A=20log10(D1/D2) and the formula K=10^(A/20).

In a second aspect, an embodiment of the present application provides another stereo implementation system, the system includes: an audio sending device, configured to: send a third broadcast signal carrying transmit power to a first audio receiving device; Sending a fourth broadcast signal carrying transmit power; acquiring PCM audio data, splitting the PCM audio data into first stream data and second stream data, and sending the first stream data to the first audio receiving device, and sending the The second stream data is sent to the second audio receiving device; the first audio receiving device is configured to: scan and receive the third broadcast signal, and determine the third broadcast signal according to the transmit power carried by the third broadcast signal Signal space loss; obtain the carrier frequency of the third broadcast signal, and calculate the first audio receiving device and the audio sending device according to the carrier frequency of the third broadcast signal and the space loss of the third broadcast signal and send the third distance to the second audio receiving device; in response to the received first stream data, play the first stream data; the second audio receiving device is used for: scanning and receive the fourth broadcast signal, and determine the space loss of the fourth broadcast signal according to the transmit power carried by the fourth broadcast signal; obtain the carrier frequency of the fourth broadcast signal, Calculate the fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency and the space loss of the fourth broadcast signal; calculate the sound number according to the third distance and the fourth distance The signal adjusts the scale factor; in response to the received second stream data, adjusts the volume of the second stream data by adjusting the scale factor according to the sound digital signal, and plays the volume-adjusted second stream data.

In this application, the second audio receiving device receives the second stream data of the PCM audio data sent by the audio transmitting device, adjusts the volume of the second stream data according to the sound digital signal adjustment scale factor, and plays the volume-adjusted first stream data, An audio receiving device plays the first stream data of the PCM audio data sent by the audio transmitting device. In this way, there is a difference between the volume-adjusted second stream data and the first stream data, so that the first audio receiving device produces a spatial stereo effect when playing the first stream data and the second audio receiving device plays the second stream data.

In an implementation manner, the scanning and receiving the third broadcast signal, and determining the space loss of the third broadcast signal according to the transmit power carried by the third broadcast signal includes: acquiring the third broadcast signal obtain the received power of the third broadcast signal; calculate the difference between the transmit power of the third broadcast signal and the received power of the third broadcast signal to obtain the space loss of the third broadcast signal. Through the above technical solution, the space loss of the third broadcast signal is obtained by calculating the difference between the transmit power of the third broadcast signal and the received power of the third broadcast signal.

In an implementation manner, the calculating the third distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and the space loss of the third broadcast signal includes: : Calculate the third distance according to the formula D3=10^((Losdb3-32.45-20×log10(F3))/20), where Losdb3 is the space loss of the third broadcast signal, and F3 is the third distance The carrier frequency of the three broadcast signals, and D3 is the third distance. Through the above technical solution, the third distance is calculated according to the formula D3=10^((Losdb3-32.45-20×log10(F3))/20).

In an implementation manner, scanning and receiving the fourth broadcast signal, and determining the space loss of the fourth broadcast signal according to the transmission power carried by the fourth broadcast signal includes: acquiring the transmission of the fourth broadcast signal power; acquiring the received power of the fourth broadcast signal; calculating the transmit power of the fourth broadcast signal and the received power of the fourth broadcast signal to determine the space loss of the fourth broadcast signal. Through the above technical solution, the space loss of the fourth broadcast signal is determined by calculating the transmit power of the fourth broadcast signal and the receive power of the fourth broadcast signal.

In an implementation manner, the calculating the fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency of the fourth broadcast signal and the space loss of the fourth broadcast signal includes: : Calculate the fourth distance according to the formula D4=10^((Losdb4-32.45-20×log10(F4))/20), where Losdb4 is the space loss of the fourth broadcast signal, and F4 is the first Four carrier frequencies of broadcast signals, D4 is the fourth distance. Through the above technical solution, the fourth distance is calculated according to the formula D4=10^((Losdb4-32.45-20×log10(F4))/20).

In an implementation manner, the calculating the sound digital signal adjustment proportional coefficient according to the third distance and the fourth distance includes: calculating the sound analog signal adjustment proportional coefficient according to the formula A=20log10(D3/D4), Wherein D3 is the third distance, D4 is the fourth distance, and A is the sound analog signal adjustment proportional coefficient; according to the formula K=10^(A/20), the sound digital signal adjustment proportional coefficient is calculated, wherein K A scaling factor is adjusted for the audio digital signal. Through the above technical solution, the digital sound signal adjustment scale factor is calculated according to the formula A=20log10(D1/D2) and the formula K=10^(A/20).

In a third aspect, an embodiment of the present application provides a stereo implementation method, which is applied in an audio sending device, the method includes: scanning and receiving a first broadcast signal carrying transmit power sent by a first audio receiving device, and according to the The transmit power carried by the first broadcast signal determines the space loss of the first broadcast signal; obtains the carrier frequency of the first broadcast signal, and determines the space loss of the first broadcast signal according to the carrier frequency of the first broadcast signal and the space of the first broadcast signal Calculate the first distance between the audio sending device and the first audio receiving device; scan and receive the second broadcast signal carrying the transmit power sent by the second audio receiving device, and carry the transmission power according to the second broadcast signal determine the space loss of the second broadcast signal; obtain the frequency of the second broadcast signal, and calculate the audio transmission device according to the frequency of the second broadcast signal and the space loss of the second broadcast signal A second distance from the second audio receiving device; calculating a sound digital signal adjustment scale factor according to the first distance and the second distance; acquiring PCM audio data, and splitting the PCM audio data into first stream data and first stream data. Second-stream data, and adjust the volume of the first-stream data according to the sound digital signal adjusting the proportional coefficient to obtain volume-adjusted first-stream data; send the volume-adjusted first-stream data to the first audio receiving device for playback ; Send the second stream data to a second audio receiving device for playback. The present application calculates the sound digital signal adjustment proportional coefficient according to the distance between the audio transmission device and the audio receiving device, adjusts the volume of the first stream data according to the sound digital signal adjustment proportional coefficient, and sends the volume-adjusted first stream data to the first stream data. The audio receiving device sends the second stream data to the second audio receiving device, so that there is a difference between the first stream data after volume adjustment and the second stream data, so that the first audio receiving device is playing the first stream data and the second stream data. The audio receiving device generates a spatial stereo effect when playing the second stream data.

In an implementation manner, the acquiring PCM audio data, splitting the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting scale factor to obtain volume adjustment The subsequent first stream data includes: in response to the operation of playing the audio file, acquiring the PCM audio data in the audio file, and splitting the PCM audio data in the audio file into the first stream data and the second stream data. In the above technical solution, the PCM audio data in the audio file can be divided into the first stream data and the second stream data by performing the operation of playing the audio file.

In an implementation manner, the operation of playing the audio file includes an operation of clicking a play button on the user interface of the music playing application or the video playing application. Through the above technical solution, when the play button on the user interface of the music playing application or the video playing application is clicked, the PCM audio data in the audio file is divided into the first stream data and the second stream data.

In an implementation manner, the acquiring PCM audio data, splitting the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting scale factor to obtain volume adjustment The latter first stream data includes: the Bluetooth protocol stack interface module of the audio transmission device divides the PCM audio data to obtain first stream data and second stream data, and adjusts the first stream according to the sound digital signal by adjusting the scale factor. The volume of the data obtains the first stream data after the volume adjustment; the Bluetooth protocol stack interface module combines the first stream data after the volume adjustment and the second stream data into the PCM audio data after the volume adjustment, and the The PCM audio data after the volume adjustment is transmitted to the Bluetooth protocol stack application layer module of the audio transmission device; the Bluetooth protocol stack application layer module transmits the PCM audio data after the volume adjustment to the audio transmission device. A Bluetooth protocol stack module; the Bluetooth protocol stack module encodes the PCM audio data after volume adjustment according to a preset coding method to obtain coded PCM audio data. Through the above technical solution, the volume adjustment of the PCM audio data can be completed before the encoding of the PCM audio data, thereby improving the stereo effect when the PCM audio data is played.

In an implementation manner, the sending the volume-adjusted first stream data to the first audio receiving device and sending the second stream data to the second audio receiving device include: the Bluetooth protocol stack module Sending the volume-adjusted first stream data in the encoded PCM audio data to the first audio receiving device, and sending the second stream data in the encoded PCM audio data to the second audio receiving device. Through the above technical solution, the encoded PCM audio data is sent to the first audio receiving device and the second audio receiving device through the Bluetooth protocol stack module.

In an implementation manner, the dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: the When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device and the volume adjustment mode of the second audio receiving device are absolute volume adjustment modes, adjust the proportional coefficient adjustment according to the sound digital signal The volume of the first stream data obtains the volume-adjusted first stream data. Through the above technical solution, when determining that the volume adjustment mode of the first audio receiving device and the volume adjustment mode of the second audio receiving device are absolute volume adjustment modes, the bluetooth protocol stack interface module adjusts the The volume of the first-stream data, so that there is a difference between the first-stream data and the second-stream data after volume adjustment, so that the first audio receiving device generates space when playing the first-stream data and the second audio-receiver is playing the second-stream data Stereo effect.

In an implementation manner, the dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: the When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is an absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is a non-absolute volume adjustment mode, obtain the audio The volume gain of the transmitting device; adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data, and adjusting the second stream data according to the volume gain of the audio transmitting device to obtain Volume-adjusted second stream data. Through the above technical solution, when the Bluetooth protocol stack interface module determines that the volume adjustment mode of the first audio receiving device is the absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode, according to the audio transmission device The volume gain of the device adjusts the volume of the second stream data, so that the volume of the second audio receiving device does not suddenly increase when playing the second stream data, thereby solving the problem of sudden sound effects when the second audio receiving device plays the second stream data.

In an implementation manner, dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is a non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is an absolute volume adjustment mode, obtain the The volume gain of the audio transmission device is adjusted, and the volume of the first stream data is adjusted according to the sound digital signal and the volume gain of the audio transmission device to obtain the volume-adjusted first stream data. Through the above technical solution, when the Bluetooth protocol stack interface module determines that the volume adjustment mode of the first audio receiving device is the absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode, according to the sound digital signal Adjust the scale factor and the volume gain of the audio transmitting device to adjust the volume of the first stream data, so that the volume of the first audio receiving device when playing the first stream data will not suddenly increase, thereby solving the problem of sound effects when the first audio receiving device plays the first stream data. mutation problem.

In an implementation manner, dividing the PCM audio data into the first stream data and the second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain the volume-adjusted first stream data includes: When the Bluetooth protocol stack interface module of the audio transmission device determines that the volume adjustment mode of the first audio receiving device is a non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is a non-absolute volume adjustment mode, obtain The volume gain of the audio transmission device; adjusting the proportional coefficient according to the sound digital signal and the volume gain of the audio transmission device by adjusting the volume of the first stream data to obtain the volume-adjusted first stream data, and according to the The volume gain of the audio sending device adjusts the volume of the second stream data to obtain volume-adjusted second stream data. Through the above technical solution, the Bluetooth protocol stack interface module adjusts the ratio according to the sound digital signal when determining that the volume adjustment mode of the first audio receiving device is the non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device is the non-absolute volume adjustment mode The coefficient and the volume gain of the audio transmitting device adjust the volume of the first stream data, and adjust the volume of the second stream data according to the volume gain of the audio transmitting device, so that the first audio receiving device is playing the first stream data and the second audio receiving device is playing The volume of the second stream data will not suddenly become louder.

In an implementation manner, the method further includes: the Bluetooth protocol stack interface module combines the volume-adjusted first stream data and the second stream data into volume-adjusted PCM audio data, or combines the volume-adjusted PCM audio data. The first stream data after the volume adjustment and the second stream data after the volume adjustment are merged into the PCM audio data after the volume adjustment, and the PCM audio data after the volume adjustment is transmitted to the Bluetooth protocol of the audio transmission device stack application layer module; the Bluetooth protocol stack application layer module transmits the volume-adjusted PCM audio data to the Bluetooth protocol stack module of the audio transmission device; the Bluetooth protocol stack module transfers the volume-adjusted PCM audio data The audio data is encoded according to a preset encoding method to obtain encoded PCM audio data. Through the above technical solution, the Bluetooth protocol stack module encodes the PCM audio data after volume adjustment according to a preset encoding method to obtain the encoded PCM audio data.

In an implementation manner, the scanning and receiving the first broadcast signal sent by the first audio receiving apparatus, and determining the space loss of the first broadcast signal according to the transmit power carried by the first broadcast signal includes: obtaining the the transmit power of the first broadcast signal; obtain the receive power of the first broadcast signal; calculate the difference between the transmit power of the first broadcast signal and the receive power of the first broadcast signal to obtain the first broadcast signal space loss. Through the above technical solution, the space loss of the first broadcast signal is obtained by calculating the difference between the transmit power of the first broadcast signal and the received power of the first broadcast signal.

In an implementation manner, the calculating the first distance between the audio sending device and the first audio receiving device according to the carrier frequency and the space loss of the first broadcast signal includes: according to the formula D1=10^ ((Losdb1-32.45-20×log10(F1))/20) is calculated to obtain the first distance, where Losdb1 is the space loss of the first broadcast signal, F1 is the carrier frequency of the first broadcast signal, D1 is the first distance. Through the above technical solution, the first distance is calculated according to the formula D1=10^((Losdb1-32.45-20×log10(F1))/20).

In an implementation manner, the scanning and receiving the second broadcast signal sent by the second audio receiving apparatus, and determining the space loss of the second broadcast signal according to the transmit power carried by the second broadcast signal includes: acquiring the transmit power of the second broadcast signal; obtain the receive power of the second broadcast signal; calculate the transmit power of the second broadcast signal and the receive power of the second broadcast signal to determine the space loss of the second broadcast signal . Through the above technical solution, the space loss of the second broadcast signal is determined by calculating the transmit power of the second broadcast signal and the received power of the second broadcast signal.

In an implementation manner, the calculating the second distance between the audio sending device and the second audio receiving device according to the carrier frequency and the space loss of the second broadcast signal includes: according to the formula D2=10^ ((Losdb2-32.45-20×log10(F2))/20) to calculate the second distance, where Losdb2 is the space loss of the second broadcast signal, F2 is the carrier frequency of the second broadcast signal, D2 is the second distance. Through the above technical solution, the second distance is calculated according to the formula D2=10^((Losdb2-32.45-20×log10(F2))/20).

In an implementation manner, the calculating the sound digital signal adjustment proportional coefficient according to the first distance and the second distance includes: calculating the sound analog signal adjustment proportional coefficient according to the formula A=20log10(D1/D2), Wherein D1 is the first distance, D2 is the second distance, A is the sound analog signal adjustment proportional coefficient; According to the formula K=10^(A/20), the sound digital signal adjustment proportional coefficient is calculated, wherein K A scaling factor is adjusted for the audio digital signal. Through the above technical solution, the digital sound signal adjustment scale factor is calculated according to the formula A=20log10(D1/D2) and the formula K=10^(A/20).

In a fifth aspect, an embodiment of the present application provides a stereo implementation method, the method comprising: an audio sending device sending a third broadcast signal carrying transmit power to a first audio receiving device, and sending a third broadcast signal carrying transmit power to a second audio receiving device the fourth broadcast signal; the first audio receiving device scans and receives the third broadcast signal, and determines the space loss of the third broadcast signal according to the transmit power carried by the third broadcast signal; the first The audio receiving device obtains the carrier frequency of the third broadcast signal, and calculates the distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and the space loss of the third broadcast signal and send the third distance to the second audio receiving device; the second audio receiving device scans and receives the fourth broadcast signal, and transmits the third distance according to the transmission power carried by the fourth broadcast signal determining the space loss of the fourth broadcast signal; the second audio receiving device obtains the carrier frequency of the fourth broadcast signal, and calculates according to the carrier frequency of the fourth broadcast signal and the space loss of the fourth broadcast signal a fourth distance between the second audio receiving device and the audio transmitting device; the second audio receiving device calculates a sound digital signal adjustment scale factor according to the third distance and the fourth distance; the The audio sending device acquires PCM audio data, divides the PCM audio data into first stream data and second stream data, sends the first stream data to the first audio receiving device, and sends the second stream data to the The second audio receiving device; the first audio receiving device plays the first stream data in response to the received first stream data; the second audio receiving device responds to the received second stream data, according to The sound digital signal adjusts the proportional coefficient to adjust the volume of the second stream data, and plays the volume-adjusted second stream data. In this application, the second audio receiving device receives the second stream data of the PCM audio data sent by the audio transmitting device, adjusts the volume of the second stream data according to the sound digital signal adjustment scale factor, and plays the volume-adjusted first stream data, An audio receiving device plays the first stream data of the PCM audio data sent by the audio transmitting device, so that there is a difference between the second stream data after volume adjustment and the first stream data, so that the first audio receiving device is playing the first stream data and the second stream data. The audio receiving device generates a spatial stereo effect when playing the second stream data.

In an implementation manner, the first audio receiving apparatus scans and receives the third broadcast signal, and determines the space loss of the third broadcast signal according to the transmit power carried by the third broadcast signal includes: obtaining the the transmit power of the third broadcast signal; obtain the receive power of the third broadcast signal; calculate the difference between the transmit power of the third broadcast signal and the receive power of the third broadcast signal to obtain the third broadcast signal space loss. Through the above technical solution, the space loss of the third broadcast signal is obtained by calculating the difference between the transmit power of the third broadcast signal and the received power of the third broadcast signal.

In an implementation manner, the calculating the third distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and the space loss of the third broadcast signal includes: : Calculate the third distance according to the formula D3=10^((Losdb3-32.45-20×log10(F3))/20), where Losdb3 is the space loss of the third broadcast signal, and F3 is the third distance The carrier frequency of the three broadcast signals, and D3 is the third distance. Through the above technical solution, the third distance is calculated according to the formula D3=10^((Losdb3-32.45-20×log10(F3))/20).

In an implementation manner, the second audio receiving apparatus scans and receives the fourth broadcast signal, and determines the space loss of the fourth broadcast signal according to the transmit power carried by the fourth broadcast signal includes: acquiring the transmit power of the fourth broadcast signal; obtain the receive power of the fourth broadcast signal; calculate the transmit power of the fourth broadcast signal and the receive power of the fourth broadcast signal to determine the space loss of the fourth broadcast signal . Through the above technical solution, the space loss of the fourth broadcast signal is determined by calculating the transmit power of the fourth broadcast signal and the receive power of the fourth broadcast signal.

In an implementation manner, the calculating the fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency of the fourth broadcast signal and the space loss of the fourth broadcast signal includes: : Calculate the fourth distance according to the formula D4=10^((Losdb4-32.45-20×log10(F4))/20), where Losdb4 is the space loss of the fourth broadcast signal, and F4 is the first Four carrier frequencies of broadcast signals, D4 is the fourth distance. Through the above technical solution, the fourth distance is calculated according to the formula D4=10^((Losdb4-32.45-20×log10(F4))/20).

In one implementation, the second audio receiving device calculating the sound digital signal adjustment proportional coefficient according to the third distance and the fourth distance includes: calculating the sound analog signal according to the formula A=20log10(D3/D4) Signal adjustment proportional coefficient, wherein D3 is the third distance, D4 is the fourth distance, A is the sound analog signal adjustment proportional coefficient; According to the formula K=10^(A/20), the sound digital signal adjustment is calculated scale factor, where K is the scale factor for adjusting the sound digital signal. Through the above technical solution, the digital sound signal adjustment scale factor is calculated according to the formula A=20log10(D1/D2) and the formula K=10^(A/20).

In a fifth aspect, some embodiments of the present application provide an electronic device, the electronic device includes a memory and a processor: the memory is used for storing program instructions; the processor is used for reading and executing the program instructions stored in the memory, When the program instructions are executed by the processor, the electronic device is caused to execute the above-mentioned stereo realization method.

In a sixth aspect, an embodiment of the present application provides a computer storage medium, where a program instruction is stored in the computer storage medium, and when the program instruction is executed on an electronic device, the electronic device is made to execute the above stereo implementation method.

In addition, for the technical effects brought by the fifth to sixth aspects, reference may be made to the descriptions related to the methods designed in the above method section, and details are not repeated here.

Description of drawings

FIG. 1 is an architectural diagram of a stereo implementation system provided by an embodiment of the present application.

FIG. 2 is a flowchart of a stereo implementation method provided by an embodiment of the present application.

FIG. 3 is an interface operation diagram for acquiring PCM audio data.

FIG. 4 is a structural frame diagram of an audio transmission apparatus provided by an embodiment of the present application.

FIG. 5 is a flowchart of a stereo implementation method provided by another embodiment of the present application.

FIG. 6 is a structural frame diagram of an audio sending apparatus provided by another embodiment of the present application.

FIG. 7 is a structural frame diagram of a Bluetooth protocol stack interface module provided by another embodiment of the present application.

FIG. 8 is a flowchart of a stereo implementation method provided by yet another embodiment of the present application.

FIG. 9 is an application environment diagram of a stereo implementation system provided by an embodiment of the present application.

FIG. 10 is a structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, illustration or illustration. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field in this application. Terms used in the specification of the present application are for the purpose of describing specific embodiments only, and are not intended to limit the present application. It should be understood that unless otherwise specified in this application, "/" means or means. For example, A/B can mean A or B. In this application, "and/or" is only an association relationship to describe associated objects, which means that there can be three kinds of relationships. For example, A and/or B can mean that A exists alone, A and B exist at the same time, and B exists alone. "At least one" means one or more. "Plural" means two or more. For example, at least one of a, b or c can represent: a, b, c, a and b, a and c, b and c, a, b and c seven situations.

Referring to FIG. 1 , it is an architectural diagram of a stereo implementation system 10 provided by an embodiment of the present application. The stereo realization system 10 includes an audio transmitting device 1 and two audio receiving devices. For the convenience of description below, the two audio receiving devices are described as a first audio receiving device 21 and a second audio receiving device 22 respectively. The audio transmitting device 1 is connected to the first audio receiving device 21 and the second audio receiving device 22 in communication respectively. In an embodiment, the communication connection between the audio sending device 1 and the first audio receiving device 21 and the first audio receiving device 22 may be a common short-distance connection, such as Bluetooth, Wi-Fi, and the like. The audio sending device 1 is used for sending audio data to the first audio receiving device 21 and the second audio receiving device 22, and the first audio receiving device 21 and the second audio receiving device 22 respectively play the received audio data to realize stereo playback of the audio data . Stereo in some embodiments of the present application may refer to using two or more independent sound effect channels to appear on a pair of devices configured in a symmetrical manner. For example, in some embodiments, the first audio receiving device 21 plays For the audio data of the left channel, the second audio receiving device 22 plays the audio data of the right channel. The audio receiving devices described in this application may appear in a pair, for example, common TWS earphones, with data transmission between the left and right earphones; in some embodiments, the audio receiving devices may also appear independently, such as speakers and the like. The stereo implementation system 10 of the present application will be specifically described below with reference to the stereo implementation method shown in FIG. 2 . The stereo realization method specifically includes the following steps.

Step S201, acquiring pulse code modulation (Pulse Code Modulation, PCM) audio data.

In this embodiment, acquiring the PCM audio data includes: the audio sending apparatus 1 acquires the PCM audio data in the audio file in response to the user's operation of playing the audio file.

Hereinafter, a mobile phone is used as the audio transmitting device 1, the first sound box is the first audio receiving device 21, and the second sound box is the second audio receiving device 22 to introduce the stereo implementation method provided by the embodiment of the present application. Referring to Fig. 3, the user interface of the music playing application is displayed on the mobile phone, the mobile phone receives the operation of the user clicking the play button on the user interface of the music playing application or the video playing application, the mobile phone performs the operation of opening the audio file, and obtains the audio file in the audio file. the PCM audio data.

Step S202 , respectively acquiring the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 .

In this embodiment, after the audio transmitting device 1 is connected to the first audio receiving device 21 for communication, the volume adjustment mode of the first audio receiving device 21 is obtained from the first audio receiving device 21 ; the audio transmitting device 1 and the second audio receiving device 22 After the communication connection is made, the volume adjustment mode of the second audio receiving device 22 is acquired from the second audio receiving device 22 . In this embodiment, the volume adjustment type includes an absolute volume adjustment mode and a non-absolute volume adjustment mode. The absolute volume adjustment mode means that when the audio receiving device and the audio transmitting device 1 are connected to play an audio file, the volume of the audio receiving device is synchronized with the volume of the audio transmitting device 1, that is, in the absolute volume adjustment mode, when the audio transmitting device 1 is adjusted When the volume is adjusted, the volume of the audio receiving device is also adjusted synchronously. The non-absolute volume adjustment mode means that when the audio receiving device and the audio transmitting device 1 are connected to play an audio file, the volume of the audio receiving device and the volume of the audio transmitting device 1 are not synchronized, that is, in the non-absolute volume adjustment mode, the audio transmitting device 1 Adjusting the volume up and adjusting the volume on the audio sink are independent of each other.

Step S203 , determine whether the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 are the same. If the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 are different, step S204 is executed. If the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 The modes are the same, and step S205 is executed.

Step S204, switching the volume adjustment mode of the first audio receiving device 21 from the absolute volume adjustment mode to the non-absolute volume adjustment mode, or switching the volume adjustment mode of the second audio receiving device 22 from the absolute volume adjustment mode to the non-absolute volume adjustment mode model. Through the switching of the volume adjustment type by the first audio receiving device 21 or the second audio receiving device 22, the volume adjustment mode of the two is achieved to reach an agreement.

Step S205, encoding the PCM audio data.

Step S206, splitting the encoded PCM audio data into first stream data and second stream data.

Step S207, sending the first stream data to the first audio receiving device 21 so that the first audio receiving device 21 can play the first stream data, and sending the second stream data to the second audio receiving device 22 so that the second audio receiving device 22 Play the second stream data.

Referring to FIG. 4 , it is a structural frame diagram of an audio sending apparatus 1 according to an embodiment of the present application. The audio transmission device 1 includes an audio playback application 11, an audio framework module 12, an audio processing module 13, an audio adjustment module 14, an audio hardware abstraction layer module 15, a Bluetooth protocol stack hardware abstraction layer module 16, a Bluetooth protocol stack interface module 17, and a Bluetooth protocol Stack application layer module 18 , Bluetooth protocol stack module 19 . In this embodiment, the audio playback application 11 is connected to the audio framework module 12 . Referring to FIG. 3 , the audio playback application 11 is configured to receive the operation of the user clicking the play button on the user interface of the music playback application or the video playback application, perform the operation of opening the audio file, and obtain the PCM audio data in the audio file. In this embodiment, the audio playing application 11 includes at least one of a music playing application or a video playing application. The audio framework module 12 is used to call system functions to process the PCM audio data. The audio framework module 12 is connected with the audio processing module 13 . The audio processing module 13 is used to perform sound effect processing on the PCM audio data. The sound effect processing includes at least one of noise reduction processing, subwoofer processing, surround sound processing, equalizer processing, reverberation processing, and visualization processing. The audio adjustment module 14 is used to adjust the volume gain of the PCM audio data. In this embodiment, the audio adjustment module 14 performs 100% volume gain adjustment on the PCM audio data. The audio adjustment module 14 is connected with the audio hardware abstraction layer module 15, the audio hardware abstraction layer module 15 is connected with the Bluetooth protocol stack hardware abstraction layer module 16, and the Bluetooth protocol stack hardware abstraction layer module 16 is connected with the Bluetooth protocol stack interface module 17 connections. The audio hardware abstraction layer module 15 forwards the PCM audio data after volume gain adjustment to the Bluetooth protocol stack hardware abstraction layer module 16 . The Bluetooth protocol stack hardware abstraction layer module 16 forwards the PCM audio data to the Bluetooth protocol stack interface module 17 . The Bluetooth protocol stack interface module 17 is connected to the Bluetooth protocol stack application layer module 18, and the Bluetooth protocol stack application layer module 18 determines whether the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 are not. same, and when the volume adjustment mode of the first audio receiving device 21 is different from the volume adjustment mode of the second audio receiving device 22, the volume adjustment mode of the first audio receiving device 21 is switched from the absolute volume adjustment mode to the non-absolute volume adjustment mode, or switching the volume adjustment mode of the second audio receiving device 22 from an absolute volume adjustment mode to a non-absolute volume adjustment mode. The Bluetooth protocol stack application layer module 18 is connected to the Bluetooth protocol stack module 19 . The bluetooth protocol stack module 19 includes an encoding module 191 , a distribution module 192 and a bluetooth protocol stack thread module 193 . The encoding module 191 is used for encoding PCM audio data. The splitting module 192 is used for splitting the encoded PCM audio data into the first stream data and the second stream data. The Bluetooth protocol stack thread module 193 sends the first stream data to the first audio receiving device 21 so that the first audio receiving device 21 can play the first stream data, and sends the second stream data to the second audio receiving device 22 so that the second audio The receiving device 22 plays the second stream data. In this embodiment, the encoding module 191 uses a subband codec (SBC) method to encode the volume-adjusted first stream data and the second stream data.

In this embodiment, when the volume adjustment mode of the first audio receiving device 21 is different from the volume adjustment mode of the second audio receiving device 22, the volume adjustment mode of the first audio receiving device 21 is switched from the absolute volume adjustment mode to the non-absolute volume adjustment mode. Absolute volume adjustment mode, so that the volume of the first audio receiving device 21 will suddenly become very large when playing the first stream data; or when the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 When not the same, switch the volume adjustment mode of the second audio receiving device 22 from the absolute volume adjustment mode to the non-absolute volume adjustment mode, the volume of the first audio receiving device 21 when playing the first stream data will suddenly become very small, causing Mutation of sound effects. In addition, since the PCM audio data comes from the audio source file, the stereo effect can be played only when the audio source file has left and right ear channel data. However, most of the sound source files in the industry are monophonic sound files, and the spatial stereo effect experience cannot be obtained when playing the PCM audio data of the monophonic sound file. For this reason, a gyroscope has been added to the side of the first audio receiving device 21 and the second audio receiving device 22 (such as a Bluetooth headset) to detect the rotation of the human head, estimate the rotation amplitude, adjust the volume of the left and right ears, and adjust the low frequency , simulates a spatial stereo effect. The embodiment of the present application can also achieve a similar playback effect on the premise that the headset does not add a gyroscope and other physics. Referring to FIG. 5 , a flowchart of a stereo implementation method provided by another embodiment of the present application specifically includes the following steps.

Step S501 , the first audio receiving apparatus 21 sends a first broadcast signal carrying the transmit power to the audio transmitting apparatus 1 .

Hereinafter, a mobile phone is also used as the audio transmission device 1, the first sound box is the first audio receiving device 21, and the second sound box is the second audio receiving device 22 to introduce the stereo implementation method provided by the embodiment of the present application.

In this embodiment, after detecting that a Bluetooth connection is established with the audio transmitting device 1, the first audio receiving device 21 sends a first broadcast signal with transmit power to the audio transmitting device 1 every first preset time. For example, after the first speaker detects that the Bluetooth connection is established with the mobile phone, it sends the first broadcast signal carrying the transmit power to the mobile phone every first preset time. In some embodiments, the first broadcast signal may be a Bluetooth Low Energy (BLE) signal. For example, after the first speaker detects that a Bluetooth connection is established with the mobile phone, it sends a Bluetooth low energy signal with a transmission power of 100mw to the mobile phone every first preset time.

Step S502, the audio sending apparatus 1 scans and receives the first broadcast signal, and determines the space loss of the first broadcast signal according to the transmit power carried by the first broadcast signal.

In this embodiment, the audio transmission apparatus 1 scans and receives the first broadcast signal, and determines the space loss of the first broadcast signal according to the transmission power carried by the first broadcast signal, including: obtaining the transmission power of the first broadcast signal; obtaining the first broadcast signal; The received power of the signal; the space loss of the first broadcast signal is determined according to the transmit power and the received power of the first broadcast signal.

For example, after scanning the first broadcast signal sent by the first speaker, the mobile phone receives the first broadcast signal and obtains the signal strength of the received first broadcast signal. The mobile phone determines the reception power of the first broadcast signal according to the received signal strength of the first broadcast signal, and obtains the transmit power carried by the first broadcast signal from the first broadcast signal. The mobile phone calculates the difference between the transmit power and the receive power of the first broadcast signal to obtain the space loss of the first broadcast signal.

Step S503 , the audio transmitting device 1 obtains the carrier frequency of the first broadcast signal, and calculates the first distance between the audio transmitting device 1 and the first audio receiving device 21 according to the carrier frequency and space loss of the first broadcast signal.

In this embodiment, calculating the first distance between the audio transmitting device 1 and the first audio receiving device 21 according to the carrier frequency and space loss of the first broadcast signal includes: substituting the carrier frequency and space loss of the first broadcast signal into the formula D1=10 ^((Losdb1-32.45-20×log10(F1))/20) Calculate the first distance between the audio transmitting device 1 and the first audio receiving device 21, where Losdb1 is the space loss of the first broadcast signal, and F1 is the first distance A carrier frequency of a broadcast signal, D1 is the first distance. In this embodiment, the carrier frequency of the first broadcast signal is 2.4 GHz.

In this embodiment, after receiving a first broadcast signal, the audio transmission apparatus 1 calculates the first distance corresponding to the first broadcast signal according to the carrier frequency and space loss of the first broadcast signal. In another embodiment of the present application, the audio sending device 1 receives a preset number of first broadcast signals from the first audio receiving device 21 , and calculates the first distance corresponding to each first broadcast signal to obtain the preset number of first broadcast signals. For the first distance, the average distance of a preset number of first distances is calculated, and the average distance is used as the first distance between the audio transmitting device 1 and the first audio receiving device 21 . In this embodiment, the first audio receiving device 21 transmits the first broadcast signal at a first preset time interval, and each first broadcast signal of the preset number of first broadcast signals received by the audio transmitting device 1 within the second time period The broadcast signal corresponds to a point in time. The audio transmission device 1 discards the broadcast signal corresponding to the time point exceeding the preset time period when calculating the first distance average value of the preset number of first distances, so as to avoid the aging of the first broadcast signal to the first distance. mean effect. In this embodiment, the audio transmission device 1 is further configured to calculate the first distance variance of a preset number of first distances, and determine from the preset number of first distances that the difference from the variance of the first distance exceeds a predetermined number Set the first broadcast signal corresponding to the first distance of the threshold, and when calculating the first distance mean of the preset number of first distances, discard the first distance corresponding to the first distance whose difference with the variance of the first distance exceeds the preset threshold The first broadcast signal is used to avoid the influence of the first broadcast signal on the average value of the first distance due to the interference of occasional interference sources during spatial transmission.

The inventor found through research that when the human body is separated from the audio transmitting device 1 and the first audio receiving device 21, if the distance between the audio transmitting device 1 and the first audio receiving device 21 is within 2 meters, the attenuation of the first broadcast signal is 3db, The error of the first distance calculated according to the first broadcast signal is 3 centimeters. If the distance between the audio transmitting device 1 and the first audio receiving device 21 is more than 2 meters, the influence of the human body on the first broadcast signal will be smaller, and the error of the first distance calculated according to the first broadcast signal will be smaller than 3 cm.

Step S504 , the second audio receiving apparatus 22 sends a second broadcast signal carrying the transmit power to the audio transmitting apparatus 1 .

In this embodiment, the second audio receiving device 22 sending the second broadcast signal carrying the transmission power to the audio transmitting device 1 includes: after the second audio receiving device 22 establishes a connection with the audio transmitting device 1, every first preset Time to transmit the second broadcast signal carrying the transmission power to the audio transmission device 1 . For example, after establishing a Bluetooth connection with the mobile phone, the second speaker sends a second broadcast signal carrying transmit power to the mobile phone every first preset time.

Step S505, the audio transmission apparatus 1 scans and receives the second broadcast signal, and determines the space loss of the second broadcast signal according to the transmit power carried by the second broadcast signal.

In this embodiment, the audio transmission device 1 receives the second broadcast signal after scanning the second broadcast signal sent by the second speaker; obtains the transmit power of the second broadcast signal; obtains the reception power of the second broadcast signal; The transmit power and receive power of , determine the space loss of the second broadcast signal. For example, after scanning the second broadcast signal sent by the second speaker, the mobile phone receives the second broadcast signal and obtains the signal strength of the received second broadcast signal. The mobile phone determines the received power of the second broadcast signal according to the received signal strength of the second broadcast signal, and obtains the transmit power carried by the second broadcast signal from the second broadcast signal. The mobile phone calculates the difference between the transmit power and the receive power of the second broadcast signal to obtain the space loss of the second broadcast signal.

Step S506 , the audio transmitting device 1 obtains the carrier frequency of the second broadcast signal, and calculates the second distance between the audio transmitting device 1 and the second audio receiving device 22 according to the carrier frequency and space loss of the second broadcast signal.

In this embodiment, the audio transmission device 1 substitutes the carrier frequency and space loss of the second broadcast signal into the formula D2=10^((Losdb2-32.45-20×log10(F2))/20) to calculate the relationship between the audio transmission device 1 and the first The second distance of the audio receiving device 22, wherein Losdb2 is the space loss of the second broadcast signal, F2 is the carrier frequency of the second broadcast signal, and D2 is the second distance.

In this embodiment, after receiving a second broadcast signal, the audio transmission apparatus 1 calculates the second distance corresponding to the second broadcast signal according to the carrier frequency and space loss of the second broadcast signal. In another embodiment of the present application, the audio transmitting device 1 receives a preset number of second broadcast signals from the second audio receiving device 22, and calculates the second distance corresponding to each second broadcast signal to obtain the preset number of For the second distance, a second distance mean value of a preset number of second distances is calculated, and the second distance mean value is used as the second distance between the audio transmitting device 1 and the second audio receiving device 22 . In this embodiment, the second broadcast signal sent by the second audio receiving device 22 at every first preset time interval, and the preset number of second broadcast signals received by the audio sending device 1 within the second time period for each second broadcast signal. Two broadcast signals correspond to a point in time. When calculating the second distance average of the preset number of second distances, the audio sending device 1 discards the broadcast signal corresponding to the time point exceeding the preset time period, so as to avoid the effect of the aging second broadcast signal on the second distance. mean effect. In this embodiment, the audio transmission device 1 is further configured to calculate the second distance variance of a preset number of second distances, and determine from the preset number of second distances that the difference from the variance of the second distance exceeds the predetermined number of distances. Set the second broadcast signal corresponding to the second distance of the threshold, and when calculating the second distance average of the preset number of second distances, discard the second distance corresponding to the second distance whose difference with the variance of the second distance exceeds the preset threshold The first broadcast signal is used to avoid the influence of the second broadcast signal on the mean value of the second distance due to the interference of occasional interference sources during spatial transmission.

In step S507, the audio transmission device 1 calculates the adjustment scale factor of the audio digital signal according to the first distance and the second distance.

In this embodiment, the audio transmission device 1 calculates the sound digital signal adjustment proportional coefficient according to the first distance and the second distance includes: substituting the first distance and the second distance into the formula A=20log10(D1/D2) to calculate the sound analog signal Adjust the proportional coefficient, wherein, D1 is the first distance, D2 is the second distance, A is the sound analog signal adjustment proportional coefficient; Substitute the sound analog signal adjustment proportional coefficient into the formula K=10^(A/20) to calculate the sound digital signal Adjust the scale factor, where K is the sound digital signal adjustment scale factor.

Step S508, the audio transmission device 1 obtains PCM audio data, splits the PCM audio data into first stream data and second stream data, and adjusts the volume of the first stream data according to the sound digital signal adjusting the proportional coefficient to obtain volume-adjusted first stream data.

In this embodiment, the audio transmission device 1 acquires PCM audio data, and splits the PCM audio data into the first stream data and the second stream data, including: the audio transmission device 1 responds to the user's operation of playing the audio file, and opens and acquires all the audio files in the audio file. the PCM audio data, and the PCM audio data in the audio file is divided into first stream data and second stream data. For example, referring to FIG. 3 , the user interface of the music player application or the video player application is displayed on the mobile phone, the user clicks the play button on the user interface of the music player application or the video player application, the mobile phone performs the operation of opening the audio file, and obtains the information in the audio file. the PCM audio data, and split the PCM audio data into first stream data and second stream data.

For example, the mobile phone divides the PCM audio data "aAbBcCdD" into the first stream data "abcd" and the second stream data "ABCD", and adjusts the volume of the first stream data "abcd" by adjusting the scale factor according to the sound digital signal. "abcd" is sent to the first speaker and the second stream data "ABCD" is sent to the second speaker, or the adjusted first stream data "abcd" is sent to the second speaker and the second stream data "ABCD" is sent to the second speaker a speaker. In this embodiment, adjusting the volume of the first stream data according to the scaling factor of the digital sound signal includes: after multiplying the volume of the first stream data by the scaling factor of the digital sound signal adjustment, the adjusted first stream data is obtained.

Step S509 , the audio sending device 1 sends the volume-adjusted first stream data to the first audio receiving device 21 .

Step S510 , the audio sending device 1 sends the second stream data to the second audio receiving device 22 .

Step S511, in response to the received volume-adjusted first stream data, the first audio receiving device 21 plays the volume-adjusted first stream data.

Step S512, in response to the received second stream data, the second audio receiving apparatus 22 plays the second stream data.

Referring to FIG. 6 , a structural frame diagram of an audio sending apparatus 1 provided by another embodiment of the present application is shown. The structural block diagram of the audio transmitting apparatus 1 in FIG. 6 is substantially the same as the structural frame of the audio transmitting apparatus 1 in FIG. 3 . The difference is that the Bluetooth protocol stack interface module 17 divides the PCM audio data to obtain the first stream data and the second stream data. The Bluetooth protocol stack interface module 17 adjusts the volume of the first stream data by adjusting the proportional coefficient according to the sound digital signal. The Bluetooth protocol stack interface module 17 combines the volume-adjusted first stream data and the second stream data into volume-adjusted PCM audio data, and transmits the volume-adjusted PCM audio data to the Bluetooth protocol stack application layer module 18 . The bluetooth protocol stack application layer module 18 is connected to the bluetooth protocol stack module 19 for transmitting the PCM audio data after volume adjustment to the bluetooth protocol stack module 19 . The Bluetooth protocol stack module 19 encodes the volume-adjusted PCM audio data according to a preset encoding method, and sends the first stream data in the encoded PCM audio data to the first audio receiving device 21, and encodes the encoded PCM audio data. The second stream data in the audio data is sent to the second audio receiving device 22 . In this embodiment, the default encoding method is the subband encoding method. That is, the Bluetooth protocol stack module 19 uses the subband coding method to encode the PCM audio data after volume adjustment to obtain the encoded PCM audio data.

In the present application, the audio transmission device 1 calculates the sound digital signal adjustment proportional coefficient according to the distance between the audio transmission device 1 and the audio receiving device, and adjusts the volume of the first stream data according to the sound digital signal adjustment proportional coefficient. The first stream data is sent to the first audio receiving device 21 , and the second stream data is sent to the second audio receiving device 22 . In this way, there is a difference between the volume-adjusted first stream data and the second stream data, so that the first audio receiving device 21 produces a spatial stereo effect when playing the first stream data and the second audio receiving device 22 plays the second stream data.

Referring to FIG. 7 , a structural frame diagram of a Bluetooth protocol stack interface module 17 provided by another embodiment of the present application is shown. The structural block diagram of the audio transmitting apparatus 1 in FIG. 7 is substantially the same as the structural frame of the audio transmitting apparatus 1 in FIG. 6 . The difference is that the Bluetooth protocol stack interface module 17 respectively determines whether the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 21 are absolute volume adjustment modes. If it is determined that the volume adjustment mode of the first audio receiving device 21 and the volume adjustment mode of the second audio receiving device 22 are absolute volume adjustment modes, adjust the volume of the first stream data according to the sound digital signal adjustment proportional coefficient to obtain the volume adjusted first volume. Top-notch data. If it is determined that the volume adjustment mode of the first audio receiving device 21 is an absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device 22 is a non-absolute volume adjustment mode, obtain the volume gain of the audio transmitting device 1, and adjust the ratio according to the sound digital signal The coefficient adjusts the volume of the first stream data to obtain the volume-adjusted first stream data, and adjusts the second stream data according to the volume gain of the audio transmission device 1 to obtain the volume-adjusted second stream data. If it is determined that the volume adjustment mode of the first audio receiving device 21 is a non-absolute volume adjustment mode and the volume adjustment mode of the second audio receiving device 22 is an absolute volume adjustment mode, obtain the volume gain of the audio transmitting device 1, and adjust the ratio according to the sound digital signal The coefficient and the volume gain of the audio transmission device 1 adjust the volume of the first stream data to obtain the first stream data after the volume adjustment; if it is determined that the volume adjustment mode of the first audio receiving device 21 is a non-absolute volume adjustment mode and the second audio receiving device The volume adjustment mode of 22 is a non-absolute volume adjustment mode, obtains the volume gain of the audio transmission device 1, and adjusts the volume of the first stream data according to the sound digital signal adjustment proportional coefficient and the volume gain of the audio transmission device 1 to obtain the first volume after the volume adjustment. The first stream data, and the second stream data after volume adjustment is obtained by adjusting the volume of the second stream data according to the volume gain of the audio transmission device 1 . The Bluetooth protocol stack interface module 17 combines the volume-adjusted first stream data, the second stream data or the volume-adjusted second stream data into PCM audio data, and transmits the volume-adjusted PCM audio data to the Bluetooth protocol stack Application layer module 18. In this embodiment, adjusting the second stream data according to the volume gain of the audio sending device 1 includes: multiplying the volume of the second stream data by the volume gain of the audio sending device 1 . In this embodiment, adjusting the volume of the first stream data according to the sound digital signal adjustment proportional coefficient and the volume gain of the audio transmission device 1 includes: multiplying the first stream data, the sound digital signal adjustment proportional coefficient and the volume gain of the audio transmission device 1 operation.

In this application, if it is determined that the volume adjustment mode of the first audio receiving device 21 is a non-absolute volume adjustment mode, the volume of the first stream data is adjusted according to the sound digital signal adjustment proportional coefficient and the volume gain of the audio transmitting device 1, so that the first audio receiving device When the device 21 plays the first stream data, the volume will not suddenly become louder, thereby solving the problem of sudden change of sound effects when the first audio receiving device 21 plays the first stream data.

Referring to FIG. 8 , a flowchart of a stereo implementation method provided by yet another embodiment of the present application is shown. Referring to FIG. 9 , the audio transmitting device 1 is connected in communication with a first audio receiving device 21 and a second audio receiving device 22 respectively. The first audio receiving device 21 is connected in communication with the second audio receiving device 22 . The stereo realization method specifically includes the following steps.

Step S801 , the audio transmitting apparatus 1 transmits a third broadcast signal carrying transmit power to the first audio receiving apparatus 21 .

Hereinafter, a mobile phone is used as the audio transmission device 1, the main ear of the True Wireless Stereo (TWS) earphone is the first audio receiving device 21, and the secondary ear of the TWS earphone is the second audio receiving device 22. Stereo implementation method.

In this embodiment, the audio sending device 1 sending the third broadcast signal carrying the transmit power to the first audio receiving device 21 includes: after the audio sending device 1 establishes a communication connection with the first audio receiving device 21 , every third preset Time to send the third broadcast signal carrying the transmit power to the first audio receiving device 21 . For example, after establishing a Bluetooth connection with the main ear of the TWS earphone, the mobile phone sends a third broadcast signal carrying transmit power to the main ear of the TWS earphone every third preset time.

Step S802, the first audio receiving apparatus 21 scans and receives the third broadcast signal, and determines the space loss of the third broadcast signal according to the transmit power carried by the third broadcast signal.

In this embodiment, the first audio receiving device 21 scans and receives the third broadcast signal, and determines the space loss of the third broadcast signal according to the transmit power carried by the third broadcast signal, including: the first audio receiving device 21 scans the audio transmitting device 1 to receive the third broadcast signal after sending the third broadcast signal; obtain the transmit power of the third broadcast signal; obtain the receive power of the third broadcast signal; determine the space of the third broadcast signal according to the transmit power and the receive power of the third broadcast signal loss. In this embodiment, after scanning the third broadcast signal sent by the mobile phone, the main ear of the TWS earphone receives the third broadcast signal and obtains the signal strength of the received third broadcast signal. The main ear of the TWS earphone determines the received power of the third broadcast signal according to the received signal strength of the third broadcast signal, and obtains the transmit power carried by the third broadcast signal from the third broadcast signal. The main ear of the TWS earphone calculates the difference between the transmit power and the receive power of the third broadcast signal to obtain the space loss of the third broadcast signal.

Step S803 , the first audio receiving device 21 obtains the carrier frequency of the third broadcast signal, and calculates the third distance between the first audio receiving device 21 and the audio transmitting device 1 according to the carrier frequency and space loss of the third broadcast signal.

In this embodiment, the first audio receiving device 21 calculates the audio transmitting device 1 by substituting the carrier frequency and space loss of the third broadcast signal into the formula D3=10^((Losdb3-32.45-20×log10(F3))/20) The third distance from the first audio receiving device 21, wherein Losdb3 is the space loss of the third broadcast signal, F3 is the frequency of the third broadcast signal, and D3 is the third distance.

Step S804 , the audio transmitting apparatus 1 transmits a fourth broadcast signal carrying the transmit power to the second audio receiving apparatus 22 .

In this embodiment, the audio sending device 1 sending the fourth broadcast signal carrying the transmit power to the second audio receiving device 22 includes: after the audio sending device 1 establishes a communication connection with the second audio receiving device 22, every third preset The time sends the fourth broadcast signal carrying the transmit power to the second audio receiving device 22 . For example, after establishing a Bluetooth connection with the secondary ear of the TWS headset, the mobile phone sends a fourth broadcast signal carrying transmit power to the secondary ear of the TWS headset every third preset time.

Step S805, the second audio receiving apparatus 22 scans and receives the fourth broadcast signal, and determines the space loss of the fourth broadcast signal according to the transmit power carried by the fourth broadcast signal.

In this embodiment, the second audio receiving device 22 scans and receives the fourth broadcast signal, and determines the space loss of the fourth broadcast signal according to the transmit power carried by the fourth broadcast signal, including: the second audio receiving device 22 scans the audio transmitting device 1 receives the fourth broadcast signal after sending the fourth broadcast signal; obtains the transmission power of the fourth broadcast signal; obtains the reception power of the fourth broadcast signal; determines the space of the fourth broadcast signal according to the transmission power and the reception power of the fourth broadcast signal loss. In this embodiment, after scanning the fourth broadcast signal sent by the mobile phone, the pair ear of the TWS earphone receives the fourth broadcast signal and obtains the signal strength of the received fourth broadcast signal. The second ear of the TWS earphone determines the received power of the fourth broadcast signal according to the received signal strength of the fourth broadcast signal, and obtains the transmit power carried by the fourth broadcast signal from the fourth broadcast signal. The pair of ears of the TWS earphone calculates the difference between the transmit power and the receive power of the fourth broadcast signal to obtain the space loss of the fourth broadcast signal.

Step S806 , the second audio receiving device 22 obtains the carrier frequency of the fourth broadcast signal, and calculates the fourth distance between the second audio receiving device 22 and the audio transmitting device 1 according to the carrier frequency and space loss of the fourth broadcast signal.

In this embodiment, the second audio receiving device 22 calculates the audio transmitting device 1 by substituting the carrier frequency and space loss of the fourth broadcast signal into the formula D4=10^((Losdb4-32.45-20×log10(F4))/20) The fourth distance from the second audio receiving device 22, wherein Losdb4 is the space loss of the fourth broadcast signal, F4 is the frequency of the fourth broadcast signal, and D4 is the fourth distance.

Step S807 , the first audio receiving device 21 sends the third distance to the second audio receiving device 22 .

In this embodiment, the first audio receiving device 21 and the second audio receiving device 22 are connected for communication through a Bluetooth low energy (Bluetooh Low Energy, BLE) protocol or a serial port profile (Serial Port Profile, SPP) protocol. The first audio receiving device 21 sends the third distance to the second audio receiving device 22 after calculating the third distance. For example, after the primary ear of the TWS headset establishes a communication connection with the secondary ear and calculates the third distance, the third distance is sent to the secondary ear.

In step S808, the second audio receiving device 22 calculates a scaling factor for adjusting the sound digital signal according to the third distance and the fourth distance.

In this embodiment, the second audio receiving device 22 substitutes the third distance and the fourth distance into the formula A=20log10(D3/D4) to calculate the sound analog signal adjustment proportional coefficient, where D3 is the third distance and D4 is the fourth distance Distance, A is the sound analog signal adjustment proportional coefficient; Substitute the sound analog signal adjustment proportional coefficient into the formula K=10^(A/20) to calculate the sound digital signal adjustment proportional coefficient, where K is the sound digital signal adjustment proportional coefficient.

Step S809 , the audio sending device 1 acquires the PCM audio data, divides the PCM audio data into the first stream data and the second stream data, and sends the first stream data to the first audio receiving device 21 . In this embodiment, the PCM audio data is audio data of a monophonic sound file.

Step S810 , the audio sending device 1 sends the second stream data to the second audio receiving device 22 .

Step S811, in response to the received first stream data, the first audio receiving apparatus 21 plays the first stream data.

Step S812, in response to the received second stream data, the second audio receiving device 22 adjusts the volume of the second stream data according to the digital sound signal adjustment scale factor, and plays the volume-adjusted second stream data.

In this embodiment, the identities of the first audio receiving device 21 and the second audio receiving device 22 are interchangeable. For example, the second audio receiving device 22 sends the calculated fourth distance to the first audio receiving device 21; the first audio receiving device 21 calculates the sound digital signal adjustment scale factor according to the third distance and the fourth distance, and The digital signal adjusts the scale factor to adjust the first stream data, and plays the adjusted first stream data; the second audio receiving device 22 plays the second stream data.

In the present application, the second audio receiving device 22 receives the second stream data of the monaural sound file sent by the audio transmitting device 1, adjusts the volume of the second stream data according to the proportional coefficient of the sound digital signal, and plays the volume-adjusted first stream data. Stream data, the first audio receiving device 22 plays the first stream data of the monaural sound file sent by the audio sending device 1 . In this way, there is a difference between the volume-adjusted second stream data and the first stream data, so that the first audio receiving device 21 produces a spatial stereo effect when playing the first stream data and the second audio receiving device 22 playing the second stream data.

Referring to FIG. 10 , it is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. The stereo realization method is applied in the electronic device 100 . The electronic device 100 may be a cell phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, as well as a cellular phone, a personal digital assistant ( personal digital assistant (PDA), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices and/or Or a smart city device, and the specific type of the electronic device 100 is not particularly limited in this embodiment of the present application. In this embodiment, the electronic device 100 includes an audio transmission apparatus 1 .

The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2 , mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, buttons 190, motor 191, indicator 192, camera 193, display screen 194, and Subscriber identification module (SIM) card interface 195 and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light. Sensor 180L, bone conduction sensor 180M, etc.

It can be understood that, the structures illustrated in the embodiments of the present invention do not constitute a specific limitation on the electronic device 100 . In other embodiments of the present application, the electronic device 100 may include more or less components than shown, or combine some components, or separate some components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor ( image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.

The controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver (universal asynchronous receiver) interface /transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and/or Universal serial bus (universal serial bus, USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 110 may contain multiple sets of I2C buses. The processor 110 can be respectively coupled to the touch sensor 180K, the charger, the flash, the camera 193 and the like through different I2C bus interfaces. For example, the processor 110 may couple the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate with each other through the I2C bus interface, so as to realize the touch function of the electronic device 100 .

The I2S interface can be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled with the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 . In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communications, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160 . For example, the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 . The MIPI interface includes a camera serial interface (camera serial interface, CSI), a display serial interface (displayserial interface, DSI), and the like. In some embodiments, the processor 110 communicates with the camera 193 through a CSI interface, so as to realize the photographing function of the electronic device 100 . The processor 110 communicates with the display screen 194 through the DSI interface to implement the display function of the electronic device 100 .

The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface may be used to connect the processor 110 with the camera 193, the display screen 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 130 is an interface that conforms to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 130 can be used to connect a charger to charge the electronic device 100, and can also be used to transmit data between the electronic device 100 and peripheral devices. It can also be used to connect headphones to play audio through the headphones. The interface can also be used to connect other electronic devices 100, such as AR devices and the like.

It can be understood that the interface connection relationship between the modules illustrated in the embodiment of the present invention is only a schematic illustration, and does not constitute a structural limitation of the electronic device 100 . In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.

The charging management module 140 is used to receive charging input from the charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from the wired charger through the USB interface 130 . In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through a wireless charging coil of the electronic device 100 . While the charging management module 140 charges the battery 142 , the electronic device 100 can also be powered by the power management module 141 .

The power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 . The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 194, the camera 193, and the wireless communication module 160. The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, battery health status (leakage, impedance). In some other embodiments, the power management module 141 may also be provided in the processor 110 . In other embodiments, the power management module 141 and the charging management module 140 may also be provided in the same device.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modulation and demodulation processor, the baseband processor, and the like.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, the antenna 1 can be multiplexed as a diversity antenna of the wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide wireless communication solutions including 2G/3G/4G/5G etc. applied on the electronic device 100 . The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and then turn it into an electromagnetic wave for radiation through the antenna 1 . In some embodiments, at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110 . In some embodiments, at least part of the functional modules of the mobile communication module 150 may be provided in the same device as at least part of the modules of the processor 110 .

The modem processor may include a modulator and a demodulator. Wherein, the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and passed to the application processor. The application processor outputs sound signals through audio devices (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or videos through the display screen 194 . In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 110, and may be provided in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), and global navigation satellite systems applied on the electronic device 100 . (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.

The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be sent from the processor 110 , perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2 .

In some embodiments, the antenna 1 of the electronic device 100 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the electronic device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code Wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM , and/or IR technology, etc. The GNSS may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou satellite navigation system (BDS), a quasi-zenith satellite system (quasi- zenith satellite system, QZSS) and/or satellite based augmentation systems (SBAS).

The electronic device 100 implements a display function through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

Display screen 194 is used to display images, videos, and the like. Display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode). , AMOLED), flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diodes (quantum dot light emitting diodes, QLED) and so on. In some embodiments, the electronic device 100 may include one or N display screens 194 , where N is a positive integer greater than one.

The electronic device 100 may implement a shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process the data fed back by the camera 193 . For example, when taking a photo, the shutter is opened, the light is transmitted to the camera photosensitive element through the lens, the light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise, brightness, and skin tone. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be provided in the camera 193 .

Camera 193 is used to capture still images or video. The object is projected through the lens to generate an optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard RGB, YUV and other formats of image signals. In some embodiments, the electronic device 100 may include 1 or N cameras 193 , where N is a positive integer greater than 1.

A digital signal processor is used to process digital signals, in addition to processing digital image signals, it can also process other digital signals. For example, when the electronic device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy and so on.

Video codecs are used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 can play or record videos in various encoding formats, for example, moving picture experts group (MPEG) 1, MPEG2, MPEG3, MPEG4, and so on.

The NPU is a neural-network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transfer mode between neurons in the human brain, it can quickly process the input information, and can continuously learn by itself. Applications such as intelligent cognition of the electronic device 100 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.

The internal memory 121 may include one or more random access memories (RAM) and one or more non-volatile memories (NVM).

Random access memory may include static random-access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous Dynamic random access memory (double data rate synchronous dynamic random access memory, DDR SDRAM, such as fifth-generation DDR SDRAM is generally called DDR5 SDRAM), etc.;

Non-volatile memory may include magnetic disk storage devices, flash memory.

Flash memory can be divided into NOR FLASH, NAND FLASH, 3D NAND FLASH, etc. according to the operation principle, and can include single-level memory cell (SLC), multi-level memory cell (multi-level memory cell, SLC) according to the level of storage cell potential. cell, MLC), triple-level cell (TLC), quad-level cell (QLC), etc., according to storage specifications, it can include universal flash storage (English: universal flash storage, UFS), Embedded multimedia memory card (embedded multi media Card, eMMC) and so on.

The random access memory can be directly read and written by the processor 110, and can be used to store executable programs (eg, machine instructions) of an operating system or other running programs, and can also be used to store data of users and application programs.

The non-volatile memory can also store executable programs and store data of user and application programs, etc., and can be loaded into the random access memory in advance for the processor 110 to directly read and write.

The external memory interface 120 can be used to connect an external non-volatile memory, so as to expand the storage capacity of the electronic device 100 . The external non-volatile memory communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example, save music, video, etc. files in external non-volatile memory.

Internal memory 121 or external memory interface 120 is used to store one or more computer programs. One or more computer programs are configured to be executed by the processor 110 . The one or more computer programs include a plurality of instructions, and when executed by the processor 110 , the plurality of instructions can implement the stereo realization method executed on the electronic device 100 in the above-mentioned embodiments, so as to realize the stereo realization function of the electronic device 100 .

The electronic device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playback, recording, etc.

The audio module 170 is used for converting digital audio information into analog audio signal output, and also for converting analog audio input into digital audio signal. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 .

Speaker 170A, also referred to as a "speaker", is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music through the speaker 170A, or listen to a hands-free call.

The receiver 170B, also referred to as "earpiece", is used to convert audio electrical signals into sound signals. When the electronic device 100 answers a call or a voice message, the voice can be answered by placing the receiver 170B close to the human ear.

The microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can make a sound by approaching the microphone 170C through a human mouth, and input the sound signal into the microphone 170C. The electronic device 100 may be provided with at least one microphone 170C. In other embodiments, the electronic device 100 may be provided with two microphones 170C, which can implement a noise reduction function in addition to collecting sound signals. In other embodiments, the electronic device 100 may further be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.

The earphone jack 170D is used to connect wired earphones. The earphone port 170D may be a USB port 130, or a 3.5mm open mobile terminal platform (OMTP) standard port, a cellular telecommunications industry association of the USA (CTIA) standard port.

The pressure sensor 180A is used to sense pressure signals, and can convert the pressure signals into electrical signals. In some embodiments, the pressure sensor 180A may be provided on the display screen 194 . There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, and the like. The capacitive pressure sensor may be comprised of at least two parallel plates of conductive material. When a force is applied to the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the intensity of the pressure according to the change in capacitance. When a touch operation acts on the display screen 194, the electronic device 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic device 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions. For example, when a touch operation whose intensity is less than the first pressure threshold acts on the short message application icon, the instruction for viewing the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold acts on the short message application icon, the instruction to create a new short message is executed.

The gyro sensor 180B may be used to determine the motion attitude of the electronic device 100 . In some embodiments, the angular velocity of electronic device 100 about three axes (ie, x, y, and z axes) may be determined by gyro sensor 180B. The gyro sensor 180B can be used for image stabilization. Exemplarily, when the shutter is pressed, the gyro sensor 180B detects the shaking angle of the electronic device 100, calculates the distance that the lens module needs to compensate according to the angle, and allows the lens to offset the shaking of the electronic device 100 through reverse motion to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenarios.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the electronic device 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist in positioning and navigation.

The magnetic sensor 180D includes a Hall sensor. The electronic device 100 can detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the electronic device 100 is a flip machine, the electronic device 100 can detect the opening and closing of the flip according to the magnetic sensor 180D. Further, according to the detected opening and closing state of the leather case or the opening and closing state of the flip cover, characteristics such as automatic unlocking of the flip cover are set.

The acceleration sensor 180E can detect the magnitude of the acceleration of the electronic device 100 in various directions (generally three axes). The magnitude and direction of gravity can be detected when the electronic device 100 is stationary. It can also be used to recognize the posture of the electronic device 100, and can be used in applications such as horizontal and vertical screen switching, and pedometers.

Distance sensor 180F for measuring distance. The electronic device 100 can measure the distance through infrared or laser. In some embodiments, when shooting a scene, the electronic device 100 can use the distance sensor 180F to measure the distance to achieve fast focusing.

Proximity light sensor 180G may include, for example, light emitting diodes (LEDs) and light detectors, such as photodiodes. The light emitting diodes may be infrared light emitting diodes. The electronic device 100 emits infrared light to the outside through the light emitting diode. Electronic device 100 uses photodiodes to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 100 . When insufficient reflected light is detected, the electronic device 100 may determine that there is no object near the electronic device 100 . The electronic device 100 can use the proximity light sensor 180G to detect that the user holds the electronic device 100 close to the ear to talk, so as to automatically turn off the screen to save power. Proximity light sensor 180G can also be used in holster mode, pocket mode automatically unlocks and locks the screen.

The ambient light sensor 180L is used to sense ambient light brightness. The electronic device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in a pocket, so as to prevent accidental touch.

The fingerprint sensor 180H is used to collect fingerprints. The electronic device 100 can use the collected fingerprint characteristics to realize fingerprint unlocking, accessing application locks, taking pictures with fingerprints, answering incoming calls with fingerprints, and the like.

The temperature sensor 180J is used to detect the temperature. In some embodiments, the electronic device 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold value, the electronic device 100 reduces the performance of the processor located near the temperature sensor 180J in order to reduce power consumption and implement thermal protection. In other embodiments, when the temperature is lower than another threshold, the electronic device 100 heats the battery 142 to avoid abnormal shutdown of the electronic device 100 caused by the low temperature. In some other embodiments, when the temperature is lower than another threshold, the electronic device 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.

Touch sensor 180K, also called "touch device". The touch sensor 180K may be disposed on the display screen 194 , and the touch sensor 180K and the display screen 194 form a touch screen, also called a “touch screen”. The touch sensor 180K is used to detect a touch operation on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. Visual output related to touch operations may be provided through display screen 194 . In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100 , which is different from the location where the display screen 194 is located.

The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice. The bone conduction sensor 180M can also contact the pulse of the human body and receive the blood pressure beating signal. In some embodiments, the bone conduction sensor 180M can also be disposed in the earphone, combined with the bone conduction earphone. The audio module 170 can analyze the voice signal based on the vibration signal of the vocal vibration bone block obtained by the bone conduction sensor 180M, so as to realize the voice function. The application processor can analyze the heart rate information based on the blood pressure beat signal obtained by the bone conduction sensor 180M, and realize the function of heart rate detection.

The keys 190 include a power-on key, a volume key, and the like. Keys 190 may be mechanical keys. It can also be a touch key. The electronic device 100 may receive key inputs and generate key signal inputs related to user settings and function control of the electronic device 100 .

Motor 191 can generate vibrating cues. The motor 191 can be used for vibrating alerts for incoming calls, and can also be used for touch vibration feedback. For example, touch operations acting on different applications (such as taking pictures, playing audio, etc.) can correspond to different vibration feedback effects. The motor 191 can also correspond to different vibration feedback effects for touch operations on different areas of the display screen 194 . Different application scenarios (for example: time reminder, receiving information, alarm clock, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

The indicator 192 can be an indicator light, which can be used to indicate the charging state, the change of the power, and can also be used to indicate a message, a missed call, a notification, and the like.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be contacted and separated from the electronic device 100 by inserting into the SIM card interface 195 or pulling out from the SIM card interface 195 . The electronic device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card and so on. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 195 can also be compatible with different types of SIM cards. The SIM card interface 195 is also compatible with external memory cards. The electronic device 100 interacts with the network through the SIM card to implement functions such as call and data communication. In some embodiments, the electronic device 100 employs an eSIM, ie: an embedded SIM card. The eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100 .

This embodiment also provides a computer storage medium, where computer instructions are stored in the computer storage medium, and when the computer instructions are executed on the electronic device 100, the electronic device 100 executes the above-mentioned relevant method steps to realize the stereo implementation in the above-mentioned embodiments method.

This embodiment also provides a computer program product, which, when the computer program product runs on a computer, causes the computer to execute the above-mentioned relevant steps, so as to realize the stereo realization method in the above-mentioned embodiment.

In addition, the embodiments of the present application also provide an apparatus, which may specifically be a chip, a component or a module, and the apparatus may include a connected processor and a memory; wherein, the memory is used for storing computer execution instructions, and when the apparatus is running, The processor can execute the computer-executed instructions stored in the memory, so that the chip executes the stereo implementation method in the above method embodiments.

Wherein, the electronic device, computer storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding method provided above. Therefore, for the beneficial effects that can be achieved, reference can be made to the corresponding provided above. The beneficial effects in the method will not be repeated here.

From the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated as required. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined. Or it may be integrated into another device, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components shown as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (which may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limitations. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be Modifications or equivalent substitutions can be made without departing from the spirit and scope of the technical solutions of the present application.

Claims (45)

1. A stereo rendering system, the system comprising:

audio transmission means for:

scanning and receiving a first broadcast signal sent by a first audio receiving device, and determining the space loss of the first broadcast signal according to the transmitting power carried by the first broadcast signal;

acquiring a carrier frequency of the first broadcast signal, and calculating a first distance between the audio transmitting device and the first audio receiving device according to the carrier frequency and the space loss of the first broadcast signal;

scanning and receiving a second broadcast signal sent by a second audio receiving device, and determining the space loss of the second broadcast signal according to the transmitting power carried by the second broadcast signal;

acquiring the carrier frequency of the second broadcast signal, and calculating a second distance between the audio transmitting device and the second audio receiving device according to the carrier frequency and the space loss of the second broadcast signal;

calculating a sound digital signal regulation proportionality coefficient according to the first distance and the second distance;

acquiring Pulse Code Modulation (PCM) audio data, dividing the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to a sound digital signal adjusting proportionality coefficient to obtain volume-adjusted first stream data;

sending the first stream data after the volume adjustment to a first audio receiving device, and sending the second stream data to a second audio receiving device;

the first audio receiving means is configured to:

sending a first broadcast signal carrying transmission power to the audio sending device;

responding to the received first streaming data after the volume adjustment, and playing the first streaming data after the volume adjustment;

the second audio receiving means is configured to:

transmitting a second broadcast signal carrying transmission power to the audio transmitting apparatus;

responding to the received second stream data, and playing the second stream data.

2. The stereo rendering system of claim 1, wherein obtaining the PCM audio data, splitting the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

responding to an operation of playing an audio file, acquiring the PCM audio data in the audio file, and splitting the PCM audio data in the audio file into the first stream data and the second stream data.

3. The stereo rendering system of claim 2, wherein the operation of playing the audio file comprises an operation of clicking a play button on a user interface of a music play application or a video play application.

4. The stereo sound implementation system of claim 1, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

a Bluetooth protocol stack interface module of the audio sending device shunts the PCM audio data to obtain first stream data and second stream data, and adjusts the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient to obtain volume-adjusted first stream data;

the Bluetooth protocol stack interface module merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data and transmits the volume-adjusted PCM audio data to a Bluetooth protocol stack application layer module of the audio transmitting device;

the Bluetooth protocol stack application layer module transmits the PCM audio data after volume adjustment to a Bluetooth protocol stack module of the audio transmitting device;

and the Bluetooth protocol stack module encodes the PCM audio data after the volume adjustment according to a preset encoding method to obtain encoded PCM audio data.

5. The stereo rendering system of claim 4, wherein the sending the volume adjusted first stream data to a first audio sink device and the sending the second stream data to a second audio sink device comprises:

and the Bluetooth protocol stack module sends the first stream data after volume adjustment in the coded PCM audio data to the first audio receiving device, and sends the second stream data in the coded PCM audio data to the second audio receiving device.

6. The stereo realization system of claim 4, wherein the preset coding method is a subband coding method.

7. The stereo sound implementation system of claim 1, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

and when the Bluetooth protocol stack interface module of the audio sending device determines that the volume adjusting mode of the first audio receiving device and the volume adjusting mode of the second audio receiving device are absolute volume adjusting modes, adjusting the volume of the first stream data according to the sound digital signal adjusting proportionality coefficient to obtain volume-adjusted first stream data.

8. The stereo sound implementation system of claim 1, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

when the Bluetooth protocol stack interface module of the audio transmitting device determines that the volume adjusting mode of the first audio receiving device is an absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is a non-absolute volume adjusting mode, acquiring the volume gain of the audio transmitting device;

and adjusting the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient to obtain volume-adjusted first stream data, and adjusting the second stream data according to the volume gain of the audio sending device to obtain volume-adjusted second stream data.

9. The stereo rendering system of claim 1, wherein the splitting the PCM audio data into first stream data and second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

and when the Bluetooth protocol stack interface module of the audio sending device determines that the volume adjusting mode of the first audio receiving device is a non-absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is an absolute volume adjusting mode, acquiring the volume gain of the audio sending device, and adjusting the volume of the first-stream data according to the sound digital signal adjusting proportionality coefficient and the volume gain of the audio sending device to obtain the first-stream data after volume adjustment.

10. The stereo rendering system of claim 1, wherein the splitting the PCM audio data into first stream data and second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

when the Bluetooth protocol stack interface module of the audio transmitting device determines that the volume adjusting mode of the first audio receiving device is a non-absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is a non-absolute volume adjusting mode, acquiring the volume gain of the audio transmitting device;

and adjusting the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient and the volume gain of the audio sending device to obtain the first stream data after volume adjustment, and adjusting the volume of the second stream data according to the volume gain of the audio sending device to obtain the second stream data after volume adjustment.

11. A stereo rendering system as defined in any of claims 7 to 10, the system further comprising:

the bluetooth protocol stack interface module of the audio sending device merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data, or merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data, and transmits the volume-adjusted PCM audio data to the bluetooth protocol stack application layer module of the audio sending device;

the Bluetooth protocol stack application layer module transmits the PCM audio data after volume adjustment to a Bluetooth protocol stack module of the audio transmitting device;

and the Bluetooth protocol stack module encodes the PCM audio data after the volume adjustment according to a preset encoding method to obtain encoded PCM audio data.

12. The stereo rendering system of claim 1, wherein scanning and receiving a first broadcast signal transmitted by a first audio receiving device and determining the spatial loss of the first broadcast signal based on the transmit power carried by the first broadcast signal comprises:

acquiring the transmitting power of the first broadcast signal;

acquiring the receiving power of the first broadcast signal;

and calculating the difference value of the transmitting power of the first broadcast signal and the receiving power of the first broadcast signal to obtain the space loss of the first broadcast signal.

13. The stereo rendering system of claim 1, wherein the calculating a first distance between the audio transmitting device and the first audio receiving device based on a carrier frequency and a spatial loss of the first broadcast signal comprises:

the first distance is calculated according to the formula D1 ^ 10 ((Losdb1-32.45-20 × log10(F1))/20), where Losdb1 is the spatial loss of the first broadcast signal, F1 is the carrier frequency of the first broadcast signal, and D1 is the first distance.

14. The stereo rendering system of claim 1, wherein scanning and receiving a second broadcast signal transmitted by a second audio receiving device and determining a spatial loss of the second broadcast signal based on a transmit power carried by the second broadcast signal comprises:

acquiring the transmitting power of the second broadcast signal;

acquiring the receiving power of the second broadcast signal;

calculating the transmission power of the second broadcast signal and the reception power of the second broadcast signal determines the spatial loss of the second broadcast signal.

15. The stereo rendering system of claim 1, wherein the calculating a second distance between the audio transmitting device and the second audio receiving device based on the carrier frequency and spatial loss of the second broadcast signal comprises:

the second distance is calculated according to the formula D2 ^ 10 ((Losdb2-32.45-20 × log10(F2))/20), where Losdb2 is the spatial loss of the second broadcast signal, F2 is the carrier frequency of the second broadcast signal, and D2 is the second distance.

16. The stereo rendering system of claim 1, wherein the calculating of the sound digital signal adjustment scaling factor based on the first distance and the second distance comprises:

calculating a sound analog signal adjustment scaling factor according to the formula a-20 log10(D1/D2), wherein D1 is the first distance, D2 is the second distance, and a is the sound analog signal adjustment scaling factor;

calculating a sound digital signal adjustment scaling factor according to the formula K10 (A/20), wherein K is the sound digital signal adjustment scaling factor.

17. A stereo rendering system, the system comprising:

audio transmission means for:

transmitting a third broadcast signal carrying transmission power to the first audio receiving device;

transmitting a fourth broadcast signal carrying transmission power to a second audio receiving device;

acquiring PCM audio data, splitting the PCM audio data into first stream data and second stream data, sending the first stream data to the first audio receiving device, and sending the second stream data to the second audio receiving device; the first audio receiving means is for:

scanning and receiving the third broadcast signal, and determining the space loss of the third broadcast signal according to the transmission power carried by the third broadcast signal;

acquiring a carrier frequency of the third broadcast signal, calculating a third distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and a space loss of the third broadcast signal, and transmitting the third distance to the second audio receiving device;

responding to the received first stream data, and playing the first stream data;

second audio receiving means for:

scanning and receiving the fourth broadcast signal, and determining the space loss of the fourth broadcast signal according to the transmission power carried by the fourth broadcast signal;

acquiring a carrier frequency of the fourth broadcast signal, and calculating a fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency of the fourth broadcast signal and the space loss of the fourth broadcast signal;

calculating a sound digital signal regulation proportionality coefficient according to the third distance and the fourth distance;

and responding to the received second stream data, adjusting the volume of the second stream data according to the sound digital signal adjusting proportionality coefficient, and playing the volume-adjusted second stream data.

18. The stereo rendering system of claim 17, wherein the scanning and receiving the third broadcast signal and determining the spatial loss of the third broadcast signal based on the transmit power carried by the third broadcast signal comprises:

acquiring the transmitting power of the third broadcast signal;

acquiring the receiving power of the third broadcast signal;

and calculating the difference value of the transmitting power of the third broadcast signal and the receiving power of the third broadcast signal to obtain the space loss of the third broadcast signal.

19. The stereo rendering system of claim 17, wherein the calculating a third distance between the first audio receiving device and the audio transmitting device based on the carrier frequency of the third broadcast signal and the spatial loss of the third broadcast signal comprises:

the third distance is calculated according to the formula D3 ^ 10 ((Losdb3-32.45-20 × log10(F3))/20), where Losdb3 is a spatial loss of the third broadcast signal, F3 is a carrier frequency of the third broadcast signal, and D3 is the third distance.

20. The stereo rendering system of claim 17, wherein scanning and receiving the fourth broadcast signal and determining the spatial loss of the fourth broadcast signal based on the transmit power carried by the fourth broadcast signal comprises:

acquiring the transmitting power of the fourth broadcast signal;

acquiring the receiving power of the fourth broadcast signal;

calculating a transmit power of the fourth broadcast signal and a receive power of the fourth broadcast signal determines a spatial loss of the fourth broadcast signal.

21. The stereo rendering system of claim 17, wherein the calculating a fourth distance between the second audio receiving device and the audio transmitting device based on the carrier frequency of the fourth broadcast signal and the spatial loss of the fourth broadcast signal comprises:

the fourth distance is calculated according to the formula D4 ^ 10 ((Losdb4-32.45-20 × log10(F4))/20), where Losdb4 is a spatial loss of the fourth broadcast signal, F4 is a carrier frequency of the fourth broadcast signal, and D4 is the fourth distance.

22. The stereo rendering system of claim 17, wherein the calculating of the sound digital signal adjustment scaling factor based on the third distance and the fourth distance comprises:

calculating a sound analog signal adjustment scaling factor according to the formula a-20 log10(D3/D4), where D3 is the third distance, D4 is the fourth distance, and a is the sound analog signal adjustment scaling factor;

calculating a sound digital signal adjustment scaling factor according to the formula K10 (A/20), wherein K is the sound digital signal adjustment scaling factor.

23. A stereo realization method applied in an audio transmission device, the method comprising:

scanning and receiving a first broadcast signal which is sent by a first audio receiving device and carries transmission power, and determining the space loss of the first broadcast signal according to the transmission power carried by the first broadcast signal;

acquiring a carrier frequency of the first broadcast signal, and calculating a first distance between the audio transmitting device and the first audio receiving device according to the carrier frequency of the first broadcast signal and the space loss of the first broadcast signal;

scanning and receiving a second broadcast signal which is sent by a second audio receiving device and carries transmission power, and determining the space loss of the second broadcast signal according to the transmission power carried by the second broadcast signal;

acquiring the frequency of the second broadcast signal, and calculating a second distance between the audio transmitting device and the second audio receiving device according to the frequency of the second broadcast signal and the space loss of the second broadcast signal;

calculating a sound digital signal regulation proportionality coefficient according to the first distance and the second distance;

obtaining PCM audio data, dividing the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient to obtain volume-adjusted first stream data;

sending the first stream data after the volume adjustment to a first audio receiving device for playing;

and sending the second stream data to a second audio receiving device for playing.

24. The stereo implementing method of claim 23, wherein the obtaining PCM audio data, splitting the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

responding to an operation of playing an audio file, acquiring the PCM audio data in the audio file, and splitting the PCM audio data in the audio file into the first stream data and the second stream data.

25. The stereo sound implementation method of claim 24, wherein the operation of playing the audio file comprises an operation of clicking a play button on a user interface of a music play application or a video play application.

26. The stereo implementing method of claim 23, wherein the obtaining PCM audio data, splitting the PCM audio data into first stream data and second stream data, and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

a Bluetooth protocol stack interface module of the audio sending device shunts the PCM audio data to obtain first stream data and second stream data, and adjusts the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient to obtain the volume-adjusted first stream data;

the Bluetooth protocol stack interface module merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data and transmits the volume-adjusted PCM audio data to a Bluetooth protocol stack application layer module of the audio transmitting device;

the Bluetooth protocol stack application layer module transmits the PCM audio data after volume adjustment to a Bluetooth protocol stack module of the audio transmitting device;

and the Bluetooth protocol stack module encodes the PCM audio data after the volume adjustment according to a preset encoding method to obtain encoded PCM audio data.

27. The stereo implementing method of claim 26, wherein the transmitting the volume-adjusted first stream data to a first audio receiving device and the transmitting the second stream data to a second audio receiving device comprises:

and the Bluetooth protocol stack module sends the first stream data after volume adjustment in the coded PCM audio data to the first audio receiving device, and sends the second stream data in the coded PCM audio data to the second audio receiving device.

28. The stereo sound implementing method of claim 23, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

and when the Bluetooth protocol stack interface module of the audio sending device determines that the volume adjusting mode of the first audio receiving device and the volume adjusting mode of the second audio receiving device are absolute volume adjusting modes, adjusting the volume of the first stream data according to the sound digital signal adjusting proportionality coefficient to obtain volume-adjusted first stream data.

29. The stereo sound implementing method of claim 23, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

when the Bluetooth protocol stack interface module of the audio transmitting device determines that the volume adjusting mode of the first audio receiving device is an absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is a non-absolute volume adjusting mode, acquiring the volume gain of the audio transmitting device;

and adjusting the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient to obtain volume-adjusted first stream data, and adjusting the second stream data according to the volume gain of the audio sending device to obtain volume-adjusted second stream data.

30. The stereo realization method of claim 23, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

and when the Bluetooth protocol stack interface module of the audio sending device determines that the volume adjusting mode of the first audio receiving device is a non-absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is an absolute volume adjusting mode, acquiring the volume gain of the audio sending device, and adjusting the volume of the first-stream data according to the sound digital signal adjusting proportionality coefficient and the volume gain of the audio sending device to obtain the first-stream data after volume adjustment.

31. The stereo realization method of claim 23, wherein the splitting the PCM audio data into the first stream data and the second stream data and adjusting the volume of the first stream data according to the sound digital signal adjustment scaling factor to obtain the volume-adjusted first stream data comprises:

when the Bluetooth protocol stack interface module of the audio transmitting device determines that the volume adjusting mode of the first audio receiving device is a non-absolute volume adjusting mode and the volume adjusting mode of the second audio receiving device is a non-absolute volume adjusting mode, acquiring the volume gain of the audio transmitting device;

and adjusting the volume of the first stream data according to the sound digital signal adjustment proportionality coefficient and the volume gain of the audio sending device to obtain the first stream data after volume adjustment, and adjusting the volume of the second stream data according to the volume gain of the audio sending device to obtain the second stream data after volume adjustment.

32. A stereo realization method as claimed in any one of claims 28 to 31, characterized in that the method further comprises:

the bluetooth protocol stack interface module merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data, or merges the volume-adjusted first stream data and the volume-adjusted second stream data into volume-adjusted PCM audio data, and transmits the volume-adjusted PCM audio data to a bluetooth protocol stack application layer module of the audio transmitting device;

the Bluetooth protocol stack application layer module transmits the PCM audio data after volume adjustment to a Bluetooth protocol stack module of the audio transmitting device;

and the Bluetooth protocol stack module encodes the PCM audio data after the volume adjustment according to a preset encoding method to obtain encoded PCM audio data.

33. The stereo implementing method of claim 23, wherein the scanning and receiving a first broadcast signal transmitted by a first audio receiving device and determining the spatial loss of the first broadcast signal according to the transmission power carried by the first broadcast signal comprises:

acquiring the transmitting power of the first broadcast signal;

acquiring the receiving power of the first broadcast signal;

and calculating the difference value of the transmitting power of the first broadcast signal and the receiving power of the first broadcast signal to obtain the space loss of the first broadcast signal.

34. The stereo implementing method of claim 23, wherein the calculating the first distance between the audio transmitting device and the first audio receiving device according to the carrier frequency and the spatial loss of the first broadcast signal comprises:

the first distance is calculated according to the formula D1 ^ 10 ((Losdb1-32.45-20 × log10(F1))/20), where Losdb1 is the spatial loss of the first broadcast signal, F1 is the carrier frequency of the first broadcast signal, and D1 is the first distance.

35. The stereo implementing method of claim 23, wherein the scanning and receiving a second broadcast signal transmitted by a second audio receiving device and determining the spatial loss of the second broadcast signal according to the transmission power carried by the second broadcast signal comprises:

acquiring the transmitting power of the second broadcast signal;

acquiring the receiving power of the second broadcast signal;

calculating the transmission power of the second broadcast signal and the reception power of the second broadcast signal determines the spatial loss of the second broadcast signal.

36. The stereo implementing method of claim 23, wherein the calculating the second distance between the audio transmitting device and the second audio receiving device according to the carrier frequency and the spatial loss of the second broadcast signal comprises:

the second distance is calculated according to the formula D2 ^ 10 ((Losdb2-32.45-20 × log10(F2))/20), where Losdb2 is the spatial loss of the second broadcast signal, F2 is the carrier frequency of the second broadcast signal, and D2 is the second distance.

37. The stereo realization method of claim 23, wherein the calculating of the sound digital signal adjustment scaling factor based on the first distance and the second distance comprises:

calculating a sound analog signal adjustment scaling factor according to the formula a-20 log10(D1/D2), wherein D1 is the first distance, D2 is the second distance, and a is the sound analog signal adjustment scaling factor;

calculating a sound digital signal adjustment scaling factor according to the formula K10 (A/20), wherein K is the sound digital signal adjustment scaling factor.

38. A method for stereo sound implementation, the method comprising:

the audio transmitting device transmits a third broadcast signal carrying transmission power to the first audio receiving device and transmits a fourth broadcast signal carrying transmission power to the second audio receiving device;

the first audio receiving device scans and receives the third broadcast signal, and determines the space loss of the third broadcast signal according to the transmitting power carried by the third broadcast signal;

the first audio receiving device acquires a carrier frequency of the third broadcast signal, calculates a third distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and a space loss of the third broadcast signal, and transmits the third distance to the second audio receiving device;

the second audio receiving device scans and receives the fourth broadcast signal, and determines the space loss of the fourth broadcast signal according to the transmitting power carried by the fourth broadcast signal;

the second audio receiving device acquires the carrier frequency of the fourth broadcast signal, and calculates a fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency of the fourth broadcast signal and the space loss of the fourth broadcast signal;

the second audio receiving device calculates a sound digital signal regulation proportionality coefficient according to the third distance and the fourth distance;

the audio sending device acquires PCM audio data, divides the PCM audio data into first stream data and second stream data, sends the first stream data to the first audio receiving device, and sends the second stream data to the second audio receiving device;

the first audio receiving device responds to the received first stream data and plays the first stream data;

and the second audio receiving device responds to the received second stream data, adjusts the volume of the second stream data according to the sound digital signal adjustment proportionality coefficient, and plays the volume-adjusted second stream data.

39. The stereo implementing method of claim 38, wherein the first audio receiving device scans for and receives the third broadcast signal and determining the spatial loss of the third broadcast signal based on the transmit power carried by the third broadcast signal comprises:

acquiring the transmitting power of the third broadcast signal;

acquiring the receiving power of the third broadcast signal;

and calculating the difference value of the transmitting power of the third broadcast signal and the receiving power of the third broadcast signal to obtain the space loss of the third broadcast signal.

40. The stereo implementing method of claim 38, wherein the calculating a third distance between the first audio receiving device and the audio transmitting device according to the carrier frequency of the third broadcast signal and the spatial loss of the third broadcast signal comprises:

the third distance is calculated according to the formula D3 ^ 10 ((Losdb3-32.45-20 × log10(F3))/20), where Losdb3 is a spatial loss of the third broadcast signal, F3 is a carrier frequency of the third broadcast signal, and D3 is the third distance.

41. The stereo implementing method of claim 38, wherein the second audio receiving device scans for and receives the fourth broadcast signal and determining the spatial loss of the fourth broadcast signal based on the transmit power carried by the fourth broadcast signal comprises:

acquiring the transmitting power of the fourth broadcast signal;

acquiring the receiving power of the fourth broadcast signal;

calculating a transmit power of the fourth broadcast signal and a receive power of the fourth broadcast signal determines a spatial loss of the fourth broadcast signal.

42. The stereo implementing method of claim 38, wherein the calculating a fourth distance between the second audio receiving device and the audio transmitting device according to the carrier frequency of the fourth broadcast signal and the spatial loss of the fourth broadcast signal comprises:

the fourth distance is calculated according to the formula D4 ^ 10 ((Losdb4-32.45-20 × log10(F4))/20), where Losdb4 is a spatial loss of the fourth broadcast signal, F4 is a carrier frequency of the fourth broadcast signal, and D4 is the fourth distance.

43. The stereo implementing method of claim 38, wherein the second audio receiving device calculating the sound digital signal adjustment scaling factor according to the third distance and the fourth distance comprises:

calculating a sound analog signal adjustment scaling factor according to the formula a-20 log10(D3/D4), where D3 is the third distance, D4 is the fourth distance, and a is the sound analog signal adjustment scaling factor;

calculating a sound digital signal adjustment scaling factor according to the formula K10 (A/20), wherein K is the sound digital signal adjustment scaling factor.

44. An electronic device, comprising a memory and a processor:

wherein the memory is to store program instructions;

the processor configured to read and execute the program instructions stored in the memory, and when the program instructions are executed by the processor, the electronic device is caused to perform the stereo sound implementation method according to any one of claims 23 to 43.

45. A computer storage medium having stored thereon program instructions which, when run on an electronic device, cause the electronic device to perform the stereo sound implementation method of any one of claims 23 to 43.

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