CN222464611U - Audio Extender - Google Patents
Audio Extender Download PDFInfo
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- CN222464611U CN222464611U CN202422924518.6U CN202422924518U CN222464611U CN 222464611 U CN222464611 U CN 222464611U CN 202422924518 U CN202422924518 U CN 202422924518U CN 222464611 U CN222464611 U CN 222464611U
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Abstract
The application provides an audio extender which is applied to the technical field of signal transmission. The audio extender comprises a transmitting end and a receiving end, wherein the transmitting end comprises an analog audio input interface, a digital audio input interface, a first driving chip, a first 485 module and a transmitting end output interface, the receiving end comprises an analog audio output interface, a digital audio output interface, a second driving chip, a second 485 module and a receiving end input interface, the analog audio input interface and the digital audio input interface are respectively connected with the first driving chip, the first 485 module is respectively connected with the first driving chip and the transmitting end output interface, the analog audio output interface and the digital audio output interface are respectively connected with the second driving chip, the second 485 module is respectively connected with the second driving chip and the receiving end input interface, and the transmitting end output interface is connected with the receiving end input interface through a network cable. The application aims to solve the technical problem of how to reduce the transmission cost of signals.
Description
Technical Field
The utility model relates to the technical field of signal transmission, in particular to an audio extender.
Background
In the field of signal transmission, digital fiber optic signals and analog audio signals typically need to pass from one end to the other. When the transmission distance is long, the signal is usually required to be enhanced by an optical repeater, so that the transmission cost of the digital optical fiber signal and the analog audio signal is greatly increased.
Therefore, how to reduce the transmission cost when transmitting digital optical fiber signals and analog audio signals is a technical problem that the skilled person has yet to solve.
Disclosure of utility model
The application provides an audio extender, which aims to solve the technical problem of how to reduce the transmission cost when transmitting digital optical fiber signals and analog audio signals.
The application provides an audio extender, which comprises a transmitting end and a receiving end which are connected through a network cable, wherein the transmitting end comprises an analog audio input interface, a digital audio input interface, a first driving chip, a first 485 module and a transmitting end output interface;
The analog audio input interface and the digital audio input interface are respectively connected with the first driving chip;
the first 485 module is respectively connected with the first driving chip and the transmitting end output interface;
The analog audio output interface and the digital audio output interface are respectively connected with the second driving chip;
The second 485 module is respectively connected with the second driving chip and the receiving end input interface;
the transmitting end output interface is connected with the receiving end input interface through a network cable.
In one embodiment, the transmitting end further comprises an AD audio conversion chip, and the receiving end further comprises a DA audio conversion chip;
The AD audio conversion chip is connected with the analog audio input interface and the first driving chip;
The DA audio conversion chip is connected with the analog audio output interface and the second driving chip.
In an embodiment, the model of the AD audio conversion chip is AD7606, and the model of the DA audio conversion chip is HT5010.
In one embodiment, the first 485 module comprises a first 485 chip and a second 485 chip;
the first 485 chip is connected with the first driving chip and the transmitting end output interface;
the second 485 chip is connected with the first driving chip and the transmitting end output interface.
In one embodiment, the second 485 module comprises a third 485 chip and a fourth 485 chip;
The third 485 chip is connected with the second driving chip and the receiving end input interface;
And the fourth 485 chip is connected with the second driving chip and the receiving end input interface.
In one embodiment, the transmitting end further comprises a transmitting end power supply input port;
And the transmitting end power supply input port is connected with the first driving chip and the first 485 module.
In one embodiment, the receiving end further comprises a receiving end power supply input port;
And the receiving end power supply input port is connected with the second driving chip and the second 485 module.
In one embodiment, the receiving end further comprises an audio selection switch;
The audio frequency selection switch is connected with the second driving chip.
In one embodiment, the first driving chip and the second driving chip are of the SP485EEN-L/TR type.
In one embodiment, the network cable is a CAT5E/6 network cable.
The audio extender comprises a transmitting end and a receiving end which are connected through a network cable, wherein the transmitting end comprises an analog audio input interface, a digital audio input interface, a first driving chip, a first 485 module and a transmitting end output interface, the receiving end comprises an analog audio output interface, a digital audio output interface, a second driving chip, a second 485 module and a receiving end input interface, the analog audio input interface and the digital audio input interface are respectively connected with the first driving chip, the first 485 module is respectively connected with the first driving chip and the transmitting end output interface, the analog audio output interface and the digital audio output interface are respectively connected with the second driving chip, the second 485 module is respectively connected with the second driving chip and the receiving end input interface, and the transmitting end output interface is connected with the receiving end input interface through the network cable.
In the audio extender provided by the application, the transmitting end and the receiving end only need to be provided with the driving chip and the 485 module. The application also does not require enhancement for analog audio signals and digital audio signals that need to be transmitted. Therefore, the audio extender provided by the application has the advantages of simple structure and less signal conversion process, so that the transmission cost is reduced because no additional chip is required to be arranged when the analog audio signal and the digital audio signal are transmitted.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a first embodiment of an audio extender of the present application;
FIG. 2 is a schematic diagram showing the connection of 485 modules of the audio extender of the present application;
FIG. 3 is a schematic diagram of an audio conversion chip connection of an audio extender of the present application;
FIG. 4 is a schematic diagram of an audio selector switch connection of the audio extender of the present application;
Fig. 5 is a schematic diagram of an application scenario of the audio extender of the present application.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Reference numerals illustrate:
10, a transmitting end, 20, a receiving end, 101, a simulation audio input interface, 102, a digital audio input interface, 103, a first driving chip, 104, a first 485 module, 105, a transmitting end output interface, 201, a simulation audio output interface, 202, a digital audio output interface, 203, a second driving chip, 204, a second 485 module, 205, a receiving end input interface, 1041, a first 485 chip, 1042, a second 485 chip, 2041, a third 485 chip, 2042, a fourth 485 chip, 106, an AD audio conversion chip, 206, a DA audio conversion chip and 207, an audio selection switch.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present application), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Based on the above, a first embodiment of the audio extender of the present application is presented. Referring to fig. 1, fig. 1 is a schematic block diagram of a first embodiment of an audio extender according to the present application.
In the embodiment, the audio extender comprises a transmitting end 10 and a receiving end 20 which are connected through a network cable, wherein the transmitting end 10 comprises an analog audio input interface 101, a digital audio input interface 102, a first driving chip 103, a first 485 module 104 and a transmitting end output interface 105, and the receiving end 20 comprises an analog audio output interface 201, a digital audio output interface 202, a second driving chip 203, a second 485 module 204 and a receiving end input interface 205;
the analog audio input interface 101 and the digital audio input interface 102 are respectively connected with the first driving chip 103;
the first 485 module 104 is respectively connected with the first driving chip 103 and the transmitting end output interface 105;
the analog audio output interface 201 and the digital audio output interface 202 are respectively connected with the second driving chip 203;
the second 485 module 204 is respectively connected with the second driving chip 203 and the receiving end input interface 205;
the transmitting end output interface 105 is connected to the receiving end input interface 205 through a network cable.
Referring to fig. 2, in an embodiment, the first 485 module 104 includes a first 485 chip 1041 and a second 485 chip 1042;
the first 485 chip is connected with the first driving chip 103 and the transmitting end output interface 105;
The second 485 chip is connected to the first driving chip 103 and the transmitting end output interface 105.
In one embodiment, the second 485 module 204 includes a third 485 chip 2041 and a fourth 485 chip 2042;
The third 485 chip 2041 is connected with the second driving chip 203 and the receiving end input interface 205;
The fourth 485 chip 2042 is connected to the second driving chip 203 and the receiving-end input interface 205.
It can be understood that the first driving chip 103 of the transmitting end 10 and the second driving chip 203 of the receiving end 20 in the present application have long-distance transmission capability, and the first 485 module 104 and the second 485 module 204 are each composed of a plurality of 485 chips, and the 485 chips also have long-distance transmission capability. Therefore, the application can achieve the purpose of long-distance transmission of digital optical fiber signals and analog audio signals on the basis of not adopting signal enhancement equipment such as an optical repeater.
In the above audio extender structure proposed in the present application, an analog audio signal to be transmitted may be connected to the analog audio input interface 101, a digital audio signal to be transmitted may be connected to the digital audio input interface 102, and then, based on the long-distance transmission capabilities of the first driving chip 103 and the first 485 chip 1041, and the second 485 chip 1042, the signal to be transmitted may be transferred to the transmitting end output interface 105. Then, the signal to be transmitted is transmitted from the transmitting end output interface 105 to the receiving end input interface 205 through the network cable, and then the signal is transmitted to the analog audio output interface 201 and the digital audio output interface 202 through the third 485 chip 2041, the fourth 485 chip 2042 and the second driving chip 203 of the receiving end.
Referring to fig. 3, in an embodiment, the transmitting end 10 further includes an AD audio conversion chip 106, and the receiving end 20 further includes a DA audio conversion chip 206;
The AD audio conversion chip 106 is connected with the analog audio input interface 101 and the first driving chip 103;
The DA audio conversion chip 206 is connected to the analog audio output interface 201 and the second driving chip 203.
In an embodiment, the AD audio conversion chip 106 is of the type AD7606, and the DA audio conversion chip 206 is of the type HT5010.
It is understood that analog audio signals are susceptible to electromagnetic interference and noise when transmitted over long distances, resulting in reduced signal quality. Therefore, the transmitting end 10 is further provided with the AD audio conversion chip 106 for converting the analog audio signal into the digital audio signal, so as to avoid the problem of signal quality degradation. Since the receiving end 20 needs the analog audio signal, the DA audio conversion chip 206 is further disposed on the receiving end 20, so that the analog audio signal can be recovered.
Thus, the application improves the transmission quality of the analog audio signal by adding the AD audio conversion chip 106 at the transmitting end 10 and adding the DA audio conversion chip 206 at the receiving end 20.
In one embodiment, the transmitting terminal 10 further comprises a transmitting terminal power input port (not shown);
The transmitting end power supply input port is connected with the first driving chip 103 and the first 485 module 104.
In one embodiment, the receiving terminal 20 further comprises a receiving terminal power input port (not shown);
the receiving-end power supply input port is connected with the second driving chip 203 and the second 485 module 204.
It will be appreciated that each of the chips in the transmitting end 10 and the receiving end 20 requires power to operate, and therefore, both the transmitting end 10 and the receiving end 20 are provided with power input ports for accessing power.
In addition, when the audio extender includes the AD audio conversion chip 106 and the DA audio conversion chip 206, the transmitting-side power supply port is also connected to the AD audio conversion chip 106, and the receiving-side power supply port is also connected to the DA audio conversion chip 206.
Referring to fig. 4, in one embodiment, the receiving end 20 further includes an audio selection switch 207;
the audio selection switch 207 is connected to the second driving chip 203.
It will be appreciated that the audio selection switch 207 is used to select the audio source for the analog audio output interface 201. In some special scenarios, the analog audio output interface 201 is not only used for outputting the analog audio signal received by the transmitting terminal 10, but also possibly for outputting the digital audio signal received by the transmitting terminal 10. Accordingly, an audio selection switch 207 may also be provided at the receiving end 20 for selecting an audio source.
In this embodiment, the present application can be adapted to the scene requirement of the receiving end 20 by setting the audio selection switch 207 at the receiving end 20, so as to improve the scene adaptation capability of the receiving end 20.
In one embodiment, the first driving chip 103 and the second driving chip 203 are of the type SP485EEN-L/TR.
In one embodiment, the network cable is a CAT5E/6 network cable.
It will be appreciated that the network cable used to connect the transmitting end 10 and the receiving end 20 will cause signal attenuation, and therefore, the extension distance of the audio extender proposed by the present application is related to the format (audio sampling rate) of the signal to be transmitted and the network cable, in addition to the performance of the driving chip and 485 chip. Specifically, when the types of the first driving chip 103 and the second driving chip 203 are SP485 eed-L/TR, the types of the 485 chips in the first 485 module 104 and the second 485 module 204 are MAX485, and the network cable is CAT5E/6 network cable, the length of the network cable may be 100 meters if the audio sampling rate is 192kHz, 150 meters if the audio sampling rate is 96kHz, and 300 meters if the audio sampling rate is 48 kHz. Of course, the specific extension distance of the audio extender of the present application may vary when other wires are used.
In the audio extender provided by the application, the transmitting end 10 and the receiving end 20 only need to be provided with the driving chip and the 485 module. The application also does not require enhancement for analog audio signals and digital audio signals that need to be transmitted. Therefore, the audio extender provided by the application has the advantages of simple structure and less signal conversion process, so that the transmission cost is reduced because no additional chip is required to be arranged when the analog audio signal and the digital audio signal are transmitted.
Referring to fig. 5, fig. 5 is a schematic diagram of an application scenario of the audio extender of the present application. In addition, the USB power line can be inserted into the power input port of the receiving end to supply power for the receiving end. The transmitting end and the receiving end are not usually close to each other, so that the power supply for supplying power to the transmitting end and the power supply for supplying power to the receiving end are not usually the same power supply. MP3 may be connected to analog audio input interface 101 and DVD or Blu-ray player may be connected to digital audio input interface 102, with transmitting side output interface 105 connected to receiving side input interface 205 via a network cable. At the receiving end, the digital audio output interface 202 may be connected to a power amplifier, and the analog audio output interface 201 may be connected to a speaker.
The foregoing description of the embodiments of the present utility model is merely an optional embodiment of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present utility model in the light of the present utility model, the description of which and the accompanying drawings, or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422924518.6U CN222464611U (en) | 2024-11-29 | 2024-11-29 | Audio Extender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422924518.6U CN222464611U (en) | 2024-11-29 | 2024-11-29 | Audio Extender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222464611U true CN222464611U (en) | 2025-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422924518.6U Active CN222464611U (en) | 2024-11-29 | 2024-11-29 | Audio Extender |
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| Country | Link |
|---|---|
| CN (1) | CN222464611U (en) |
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- 2024-11-29 CN CN202422924518.6U patent/CN222464611U/en active Active
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