JP2015061115A - Voice input/output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a voice input/output device capable of facilitating the transmission of voice issued by a user him/herself to a communication party and also attaining miniaturization.SOLUTION: A voice input/output device includes: a right-ear body part 2R and a left-ear body part 2L that have voice propagation passages 22b where opening parts 22a facing the insides of the ears of the user are arranged at one ends and are respectively mounted on both of the ears of a user; a speaker 23 arranged in the voice propagation passage 22b of the right-ear body part 2R; a speaker 23 arranged in the voice propagation passage 22b of the left-ear body part 2L; and a microphone part 24 having a first voice collection hole 24h facing a voice output surface 23a of the speaker 23 in the right-ear body part 2R. When the microphone part 24 is not in use, voice is output from the speaker 23 of the right-ear body part 2R and the speaker 23 of the left-ear body part 2L. When the microphone 24 is in use, the voice output from the speaker 23 of the right-ear body part 2R is stopped and the voice is output from the speaker 23 of the left-ear body part 2L.

Description

  The present invention relates to a voice input / output device worn on a user's ear.

  2. Description of the Related Art An earphone microphone (sound input / output device) in which a microphone is incorporated into an earphone and integrated is widely known. A part of the voice uttered by the user propagates through the bones and muscles of the head, vibrates the eardrum, etc., and is sent to the ear canal. The voice input / output device attached to the user's ear collects the user's own voice generated inside the ear with a microphone.

  The user can listen to the voice of the other party's speech or music output from the speaker through the voice input / output device attached to the ear, and can send the user's own voice input to the microphone to the other party. it can. For this reason, voice input / output devices are often used for hands-free calls such as mobile phones. An example of such a voice input / output device is disclosed in Patent Document 1.

  The conventional audio input / output device described in Patent Document 1 includes an output audio propagation path and an input audio propagation path each having an opening facing the inside of a user's ear at each end. A partition wall is provided between the output sound propagation path and the input sound propagation path, and a speaker and a microphone unit are disposed on the output sound propagation path and the input sound propagation path, respectively.

  In the voice input / output device having the above configuration, the voice output from the speaker reaches the user's eardrum through the output voice propagation path. Thereby, the user can listen to the sound output from the speaker.

  Also, part of the voice uttered by the user propagates through the bones and muscles of the head, vibrates the eardrum, etc., and is sent to the ear canal. The sound transmitted into the ear canal is input to the microphone unit via the input sound propagation path. Thereby, the voice uttered by the user can be sent to the call partner.

  At this time, a partition wall is provided between the output sound propagation path and the input sound propagation path. Thereby, the input to the microphone part of the output sound of a speaker can be reduced. Therefore, it is possible to reduce the output voice of the speaker from being heard by the other party and to easily convey the voice emitted by the user to the other party.

JP 2007-201887 A

  However, according to the audio input / output device disclosed in Patent Document 1, since the partition wall is provided between the output audio propagation path and the input audio propagation path, there is a problem that the audio input / output apparatus is increased in size.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide a voice input / output device that can easily transmit a voice emitted by a user to the other party and can be miniaturized. To do.

  In order to solve the above-described problems, a voice input / output device according to the present invention has a voice propagation path having an opening at one end facing the inside of a user's ear, and is first mounted on both ears of the user. The main body and the second main body, the first speaker disposed in the sound propagation path of the first main body, the second speaker disposed in the sound propagation path of the second main body, and the sound of the first speaker A microphone part having a first sound collection hole facing the output surface, and outputs sound from the first speaker and the second speaker when the microphone part is not used, and the sound of the first speaker when the microphone part is used. The output is stopped and sound is output from the second speaker.

  According to this configuration, the sound output from the first speaker and the second speaker when the microphone unit is not used propagates to the ear canal through the sound propagation path. On the other hand, when the microphone unit is used, the sound output from the first speaker is stopped and the sound is output from the second speaker. At this time, the sound generated inside the user's ear propagates through the sound propagation path of the first main body section and is input to the microphone section through the first sound collection hole facing the sound output surface of the first speaker.

  According to the present invention, in the audio input / output device configured as described above, an air chamber that is isolated via the audio propagation path and the partition part of the first main body part, and the external auditory canal that is provided in the first main body part and communicates with the outside. A first input sound hole to be communicated, a second input sound hole for communicating the air chamber with the outside of the first body portion, and a second sound collection hole provided in the microphone portion and facing the air chamber. The mixed sound composed of the internal sound generated inside the ear and the external sound input from the first input sound hole is collected by the first sound collection hole, and the external sound input from the second input sound hole is collected. The external sound included in the mixed sound using the mixed sound collected by the second sound collecting hole and collected by the first sound collecting hole and the external sound collected by the second sound collecting hole. It is characterized in that a noise processing unit for reducing the noise is provided.

  According to this configuration, the mixed sound composed of the internal sound emitted from the user and generated inside the ear and the external sound input from the first input sound hole is transmitted through the sound propagation path and the first sound collection hole. Is input to the department. The external sound input from the second input sound hole is input to the microphone unit through the air chamber and the second sound collection hole. The noise processing unit reduces the external sound included in the mixed sound using the mixed sound collected by the first sound collecting hole and the external sound collected by the second sound collecting hole.

  According to the present invention, in the voice input / output device configured as described above, the partition portion includes a first speaker. According to this configuration, the air chamber is isolated from the sound propagation path of the first main body portion via the first speaker.

  According to the present invention, in the voice input / output device configured as described above, a cover member that opens the first sound collection hole and the second sound collection hole and covers the noise processing unit is provided in the microphone unit, and the peripheral portion of the first speaker The cover member is provided with a recess in which the is fitted.

  According to this configuration, the peripheral portion of the first speaker is fitted into the recess of the cover member, so that the air chamber is isolated from the sound propagation path of the first main body portion via the first speaker.

  According to the present invention, the first sound collecting hole of the microphone unit that collects the internal sound generated inside the ear faces the sound output surface of the first speaker arranged in the sound propagation path of the first main body unit. Thereby, it is not necessary to provide a path for guiding the internal sound to the microphone part separately from the sound propagation path. Therefore, it is possible to reduce the size of the voice input / output device. Moreover, since the sound output of the first speaker is stopped and the sound is output from the second speaker when the microphone unit is used, it is possible to easily convey the sound emitted by the user himself / herself to the other party.

1 is an external perspective view of an earphone microphone according to a first embodiment of the present invention. It is explanatory drawing which shows the state with which the earphone microphone which concerns on 1st Embodiment of this invention was mounted | worn with a user's ear. It is sectional drawing of the main-body part for right ears of the earphone microphone which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the earphone microphone which concerns on 1st Embodiment of this invention. It is sectional drawing of the main-body part for right ears of the earphone microphone which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the structure of the earphone microphone which concerns on 2nd Embodiment of this invention. It is sectional drawing of the main-body part for right ears of the earphone microphone which concerns on 3rd Embodiment of this invention.

<First Embodiment>
First, the outline of the configuration of the earphone microphone (audio input / output device) according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of an earphone microphone, and FIG. 2 is an explanatory view showing a state in which the earphone microphone is attached to a user's ear.

  As shown in FIG. 1, the earphone microphone 1 includes a main body 2, a cable 3, and a connector 4. The main body 2 and the cable 3 form a pair of a right ear main body 2R (first main body) and cable 3R, a left ear main body 2L (second main body), and a cable 3L. The right ear main body 2R includes both a microphone 24 (see FIG. 3) and a speaker 23 (see FIG. 3), which will be described later. The left ear main body 2L includes the speaker 23, and the microphone 24 is It is omitted. In the following description, the main body 2R for the right ear is used.

  The right ear main body 2R is attached to the user's ear E as shown in FIG. The connector 4 is an input / output terminal for an electronic device (not shown), and is electrically connected to the right ear main body 2 </ b> R via the cable 3. The right ear main body 2 </ b> R transmits and receives audio signals to and from the electronic device via the cable 3 and the connector 4.

  The right ear main body 2R sends out sound based on the sound signal received from the connected electronic device toward the user's ear canal E1 and the eardrum E2. Also, part of the voice uttered by the user propagates through the bones and muscles of the head to vibrate the eardrum E2 and the like, and is sent to the ear canal E1. The right ear main body 2R collects the internal sound generated inside the ear E and the external sound generated outside the ear E in this way, and generates a sound signal based on the sound.

  Next, a detailed configuration of the right ear main body 2R of the earphone microphone 1 will be described with reference to FIG. 3 in addition to FIG. 1 and FIG. FIG. 3 is a cross-sectional view of the right ear main body 2R of the earphone microphone. Note that the broken-line arrows drawn in FIG. 3 indicate the traveling path and traveling direction of the sound input / output to / from the earphone microphone 1.

  As shown in FIGS. 1 and 2, the right ear main body 2 </ b> R has a substantially cylindrical shape and includes an ear pad 21 and a main body housing 22.

  As shown in FIG. 3, the ear pad 21 is attached to an opening 22 a provided on the ear E side of the main body housing 22. The ear pad 21 includes a through hole 21a that allows the ear canal E1 and the opening 22a to communicate with each other in the center in the radial direction. The ear pad 21 is formed with elasticity using, for example, synthetic resin or rubber so that the outer peripheral portion does not damage the ear canal E1, and can be deformed corresponding to the inner surface shape of the ear canal E1. When the earphone microphone 1 is attached to the user's ear E, the ear pad 21 is in close contact with the inner surface of the ear canal E1 with almost no gap.

  The main body housing 22 is made of, for example, a synthetic resin, and includes an opening 22a that communicates with the ear canal E1 on the ear E side. As shown in FIG. 3, the main body housing 22 includes a speaker 23 (first speaker) and a microphone unit 24. Although not shown, the left ear main body 2L also includes a speaker (second speaker) similar to the speaker 23. The left-ear main body 2L is different from the right-ear main body 2R in that the microphone 24 is omitted, but the other configurations are the same as the right-ear main body 2R.

  The speaker 23 is disposed in a sound propagation path 22 b provided inside the main body housing 22. The sound propagation path 22b extends to the opening 22a and communicates with the through hole 21a through the opening 22a. The speaker 23 is arranged such that the sound output surface 23a is substantially perpendicular to the direction in which the sound propagation path 22b extends so that the sound output surface 23a faces the opening 22a. The direction of the speaker 23 described here is merely an example, and is not limited thereto. For example, the speaker 23 may be disposed so that the sound output surface 23a is substantially parallel to the direction in which the sound propagation path 22b extends. . The speaker 23 propagates the sound based on the sound signal received from the electronic device to the sound propagation path 22b and transmits the sound toward the ear canal E1 from the opening 22a.

  An air chamber 22r is provided in the main body housing 22. The air chamber 22r is isolated via the sound propagation path 22b and the partition portion 22t. The partition portion 22t is made of a plate-like member, and the back surface portion 23b of the speaker 23 is fitted into an opening portion 22s provided in the partition portion 22t. Thereby, the back surface (surface opposite to the audio output surface 23a) of the speaker 23 faces the air chamber 22r.

  When the diaphragm of the speaker 23 vibrates, the sound output from the sound output surface 23a (front surface) and the surface opposite to the sound output surface 23a (back surface) are in opposite phases. By providing the partition portion 22t, it is possible to prevent the sound output from the back surface of the speaker 23 from going around to the sound output surface 23a side. Thereby, it is possible to prevent the sound output from the sound output surface 23a from being canceled by the sound output from the back surface of the speaker 23. Therefore, the sound quality of the sound output from the sound output surface 23a can be improved.

  A microphone portion 24 is disposed below the main body housing 22 across the sound propagation path 22b and the air chamber 22r. The microphone portion 24 has a cover member 24m whose outer shape is a substantially rectangular parallelepiped shape, and the inside of the cover member 24m is hollow. The microphone unit 24 includes a microphone chip 24a, a signal amplification unit 24b, a first sound collection unit 24c, and a second sound collection unit 24d inside the cover member 24m.

  The microphone chip 24a is disposed at a substantially central portion of the microphone unit 24, and includes a diaphragm 24e and a fixed electrode (not shown) disposed to face the diaphragm 24e with a predetermined distance. Thereby, the microphone chip 24a is composed of a capacitor type microphone chip. The planar portion of the diaphragm 24e extends along the horizontal direction and the depth direction of the drawing of FIG. The microphone chip 24a is provided with sound holes on each of the upper surface side and the lower surface side of the diaphragm 24e in FIG. The diaphragm 24e vibrates with sound reaching from its upper surface side and lower surface side.

  The signal amplifying unit 24b is disposed in the vicinity of the microphone chip 24a and is electrically connected to the microphone chip 24a. The signal amplifying unit 24b amplifies the electrical signal output based on the change in the capacitance of the microphone chip 24a due to the vibration of the diaphragm 24e.

  The first sound collection unit 24c is formed of an internal space of the microphone unit 24 formed on the lower surface side of the diaphragm 24e. The first sound collecting portion 24c extends from the first sound collecting hole 24h provided on the upper surface of the cover member 24m of the microphone portion 24 to the lower surface side of the diaphragm 24e, and vibrates with the sound propagation path 22b via the first sound collecting hole 24h. The lower surface side of the plate 24e is communicated. The first sound collection hole 24 h faces the sound output surface 23 a of the speaker 23. The first sound collecting unit 24c collects sound propagating through the sound propagation path 22b.

  The second sound collecting unit 24d is composed of an internal space of the microphone unit 24 formed on the upper surface side of the diaphragm 24e. The second sound collecting portion 24d extends from the second sound collecting hole 24k provided on the upper surface of the cover member 24m of the microphone portion 24 to the upper surface side of the diaphragm 24e, and the air chamber 22r and the diaphragm are interposed through the second sound collecting hole 24k. The upper surface side of 24e is connected. The second sound collection hole 24k faces the air chamber 22r. The second sound collecting unit 24d collects sound propagating through the air chamber 22r.

  One end of the external sound propagation path 22h is connected to the sound propagation path 22b. The other end side of the external sound propagation path 22h extends to the first input sound hole 22k provided on the outer surface of the main body housing 22, and communicates with the outside of the ear E through the first input sound hole 22k. The arrangement of the external audio propagation path 22h described here is an example, and is not limited to the configuration shown in FIG. For example, the external sound propagation path 22h may be arranged so as to communicate with the outside of the ear E on the outer surface on the upper side of the main body housing 22 in FIG. 3, or the ear E in the depth direction with respect to the paper surface of FIG. You may arrange | position so that it may communicate with the exterior.

  The external sound propagation path 22h propagates external sound generated outside the ear E to the ear canal E1 via the sound propagation path 22b. That is, even when the ear pad 21 is in close contact with the inner surface of the ear canal E1 with almost no gap, the user can hear external sound that is the sound around the user. The external sound propagation path 22h mixes the external sound with the internal sound generated inside the ear E and propagating through the sound propagation path 22b.

  The main housing 22 has a second input sound hole 22g that allows the air chamber 22r to communicate with the outside of the right ear main body 2R. Thereby, the low frequency range of the sound generated from the back surface of the speaker 23 (surface opposite to the sound output surface 23a) can be amplified by Helmholtz resonance. Therefore, the sound quality of the sound output from the speaker 23 can be improved. Further, it is possible to prevent deformation of the diaphragm of the speaker 23 due to a change in atmospheric pressure. Moreover, the external sound which is a sound around the user propagates to the air chamber 22r through the second input sound hole 22g. The external sound propagated to the air chamber 22r is collected by the second sound collecting unit 24d of the microphone unit 24 through the second sound collecting hole 24k facing the air chamber 22r.

  By providing the external sound propagation path 22h, it is conceivable that a part of the internal sound propagates through the external sound propagation path 22h and is transmitted from the first input sound hole 22k to the external space of the ear E. However, since the external space of the ear E is very large with respect to the internal space of the ear E such as the external auditory canal E1, sufficient air vibration cannot be obtained for the internal sound transmitted to the external space of the ear E. Therefore, the internal sound transmitted from the first input sound hole 22k to the external space of the ear E does not propagate to the second sound collection unit 24d via the second input sound hole 22g and the air chamber 22r.

  In this way, the first sound collecting unit 24c collects mixed sound including the internal sound of the ear E and the external sound, and the second sound collecting unit 24d collects the external sound of the ear E.

  In the microphone part 24, the diaphragm 24e vibrates due to a difference in sound pressure applied to the upper surface and the lower surface thereof. The external sound is collected by each of the first sound collecting unit 24c and the second sound collecting unit 24d and the sound pressure difference between them is small, so that the external sound is canceled by the diaphragm 24e. On the other hand, the internal sound, that is, the sound emitted by the user himself, is collected by the first sound collecting unit 24c and not collected by the second sound collecting unit 24d, and thus is not canceled by the diaphragm 24e. Therefore, the earphone microphone 1 can improve the quality of the sound produced by the user and can easily convey the sound to the other party.

  As described above, the microphone unit 24 performs a process of reducing the external sound included in the mixed sound using the mixed sound collected by the first sound collecting unit 24c and the external sound collected by the second sound collecting unit 24d. Functions as a noise processing unit. That is, the microphone unit 24 constitutes a differential microphone in which the first sound collecting unit 24c, the second sound collecting unit 24d, and the noise processing unit are integrally formed.

  FIG. 4 is a block diagram showing the configuration of the earphone microphone 1. In order to control the operation of the earphone microphone 1, a control unit 25 is accommodated in the main body housing 22 (not shown in FIG. 3). A speaker 23, a microphone unit 24, and a storage unit 26 are connected to the control unit 25. The control unit 25 is configured by a calculation unit (not shown) and other electronic components, and controls the operation of each component of the earphone microphone 1 based on a program and data stored and input in advance in the storage unit 26 and the like, and a series of sounds. I / O processing is realized.

  When the earphone microphone 1 configured as described above is used to listen to music, for example, the speaker 23 transmits the sound received from an electronic device (not shown) toward the user's ear canal E1 and the eardrum E2. Since the speakers 23 are provided in both the right ear main body 2R and the left ear main body 2L shown in FIG. 1, the user listens to the sound transmitted from the earphone microphone 1 individually from the left and right ears E. Can do. At this time, the microphone unit 24 stops the sound collecting function. That is, when the microphone unit 24 is not used, sound is output from the speaker 23 of the right-ear main body 2R and the left-ear main body 2L. At this time, the microphone unit 24 does not have to stop the sound collecting function.

  On the other hand, when the earphone microphone 1 is connected to, for example, a telephone and used for a call, the first sound collecting unit 24c collects mixed sound including the internal sound of the ear E and the external sound. Further, the second sound collecting unit 24d collects the external sound of the ear E. And the microphone part 24 performs the process which reduces the external audio | voice contained in a mixed audio | voice, and improves the quality of the audio | voice conveyed to an other party. The control unit 25 generates an audio signal output from the microphone unit 24 and transmits it to the telephone. At this time, the voice output function of the speaker 23 of the right-ear main body 2R is stopped so that the voice spoken by the other party is output from the speaker of the left-ear main body 2L. That is, when the microphone unit 24 is used, the sound output of the speaker 23 of the right-ear main body 2R is stopped and the sound is output from the speaker of the left-ear main body 2L.

  According to the present embodiment, the first sound collection hole 24h of the microphone section 24 that collects the internal sound generated inside the ear is formed by the speaker 23 disposed in the sound propagation path 22b of the right-ear main body section 2R. Facing the audio output surface 23a. Thereby, it is not necessary to provide a path for guiding the internal sound to the microphone unit 24 separately from the sound propagation path 22b. Therefore, it is possible to reduce the size of the earphone microphone 1 (voice input / output device). In addition, the mold for the right ear main body 2R can be easily manufactured, and the right ear main body 2R can be easily molded. Therefore, the manufacturing cost of the earphone microphone 1 can be reduced. Furthermore, since the sound output of the speaker 23 is stopped when the microphone unit 24 is used, it is possible to easily convey the sound emitted by the user himself / herself to the other party.

  Also, the second input sound that communicates the air chamber 22r isolated via the sound propagation path 22b of the right ear main body 2R and the partition 22t, and the outside of the right ear main body 2R. Hole 22g. Thereby, the sound quality of the sound output from the speaker 23 can be improved, and deformation of the diaphragm of the speaker 23 due to a change in atmospheric pressure can be prevented.

  Also, a first input sound hole 22k provided in the right ear main body 2R for communicating the external ear canal E1 with the outside of the right ear main body 2R, and a microphone provided in the microphone 24 and facing the air chamber 22r. 2 sound collecting holes 22g, and a mixed sound composed of an internal sound generated inside the ear E and an external sound inputted from the first input sound hole 22k is collected by the first sound collecting hole 24h, and the second sound collecting hole 22g. The external sound input from the input sound hole 22g is collected by the second sound collection hole 24k. The microphone unit 24 uses the mixed sound collected by the first sound collection hole 24h and the external sound collected by the second sound collection hole 24k to reduce the external sound included in the mixed sound. Part function.

  Thereby, the earphone microphone 1 propagates external sound around the user to the ear canal E1 through the first input sound hole 22k. Furthermore, the earphone microphone 1 reduces the external sound from the mixed sound of the sound generated by the user himself / herself generated inside the ear E and the external sound. Therefore, the earphone microphone 1 can easily convey the sound emitted by the user himself / herself to the other party, and the surrounding sound can be delivered to the user's ear.

  At this time, since the second sound collection hole 24k of the microphone section 24 faces the air chamber 22r, it is not necessary to provide a passage for guiding external sound to the microphone section 24 separately from the air chamber 22r. Therefore, the earphone microphone 1 can be further reduced in size. In addition, the mold for the right ear main body 2R can be manufactured more easily, and the right ear main body 2R can be easily molded. Therefore, the manufacturing cost of the earphone microphone 1 can be further reduced.

  Further, the mixed sound is collected by the first sound collecting unit 24c via the sound propagation path 22b. Further, the external sound is collected by the second sound collecting unit 24d through the second input sound hole 22g and the air chamber 22r. In this manner, the earphone microphone 1 can separately acquire the mixed sound and the external sound in order to reduce the external sound from the mixed sound.

  The external sound propagation path 22 h has one end connected to the sound propagation path 22 b and the other end extending to the first input sound hole 22 k provided on the outer surface of the main body housing 22. As a result, the external sound propagates to the ear canal E1 and the first sound collecting unit 24c via the external sound propagation path 22h and the sound propagation path 22b. In this way, the earphone microphone 1 can acquire mixed sound and can deliver external sound to the user's ear.

Second Embodiment
Next, the configuration of the earphone microphone according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of the right ear main body 2R of the earphone microphone, and FIG. 6 is a block diagram showing the configuration of the earphone microphone. Since the basic configuration of this embodiment is the same as that of the first embodiment described above with reference to FIGS. 1 to 4, the same reference numerals are assigned to the same components as those of the first embodiment. The description of the drawings and the description thereof will be omitted. In this embodiment, the partition part 22t of the first embodiment is omitted. In the present embodiment, the configuration of the microphone unit 24 is different from that of the first embodiment.

  In the second embodiment, the partition portion 22t of the first embodiment is omitted, and the air chamber 22r is isolated via the sound propagation path 22b and the speaker 23. That is, the speaker 23 has the function of the partition portion 22t. The speaker 23 is attached to the inner surface of the main housing 22 with an adhesive, for example. Specifically, an adhesive is applied to the peripheral portion of the speaker 23 to adhere the speaker 23 to the inner surface of the main body housing 22. Thereby, it becomes unnecessary to provide the partition part 22t separately from the speaker 23, and the number of parts and the manufacturing man-hour of the earphone microphone 1 can be reduced. The attachment of the speaker 23 to the main body housing 22 is not limited to the attachment using an adhesive. For example, a mesh-like cover member (not shown) that covers the sound output surface 23a side of the speaker 23 may be attached to the speaker 23, and the speaker 23 may be screwed to the main body housing 22 via the cover member.

  In the earphone microphone 1 of the second embodiment, the microphone unit 24 individually includes a first microphone 24f (first sound collecting unit) and a second microphone 24g (second sound collecting unit) as shown in FIGS. .

  The first microphone 24 f is disposed on one end side of the sound propagation path 22 b provided inside the main body housing 22. The other end side of the sound propagation path 22b extends to the opening 22a and communicates with the through hole 21a via the opening 22a. As the first microphone 24f, for example, a microphone such as a MEMS (Micro Electro Mechanical Systems) microphone, an ECM (Electret Condenser Microphone), or the like can be used. The first microphone 24f collects sound propagating through the sound propagation path 22b through the first sound collection hole 24h.

  The second microphone 24g is disposed in the vicinity of the speaker 23 in the air chamber 22r provided in the main body housing 22. The air chamber 22r communicates with the outside of the ear E through a second input sound hole 22g provided on the outer surface of the main body housing 22. As the second microphone 24g, for example, a microphone such as a MEMS microphone or an ECM can be used as in the first microphone 24f. The second microphone 24g collects the sound propagating through the air chamber 22r through the second sound collection hole 24k.

  Furthermore, the earphone microphone 1 of the second embodiment includes an external audio propagation path 22h shown in FIG. The external sound propagation path 22h extends from the first input sound hole 22k provided on the outer surface of the main body housing 22 to the external sound output sound hole 22m provided at the opening 22a. The external sound propagation path 22h communicates the space outside the ear E with the ear canal E. The external sound propagation path 22h mixes the external sound with the internal sound generated inside the ear E and propagating through the ear canal E.

  The external sound propagation path 22h is formed independently of the sound propagation path 22b. The arrangement of the external audio propagation path 22h described here is an example, and is not limited to the configuration shown in FIG. For example, the external sound propagation path 22h may be arranged so as to communicate with the outside of the ear E on the right outer surface of the main body housing 22 in FIG. 5, and the ear E in the depth direction with respect to the paper surface of FIG. You may arrange | position so that it may communicate with the exterior.

  In this way, the first microphone 24f collects the mixed sound composed of the internal sound of the ear E and the external sound and generates a sound signal based on the mixed sound. The second microphone 24g collects the external sound of the ear E and generates a sound signal based on the external sound.

  The control unit 25 includes a noise processing unit 27 shown in FIG. In addition, although the control part 25 is set as the structure provided with the noise process part 27 here, the structure provided with the noise process part 27 separately from the control part 25 may be sufficient.

  The noise processing unit 27 compares the information related to the mixed sound obtained from the first microphone 24f and the information related to the external sound obtained from the second microphone 24g, and performs a process of reducing the external sound included in the mixed sound. As this processing method, for example, a method is used in which information relating to audio having a phase opposite to that of external audio is generated from information relating to external audio, and this is superimposed on the mixed audio obtained from the first microphone 24f and canceled. be able to. Thereby, the earphone microphone 1 can make it easy to convey the internal sound, that is, the sound emitted by the user himself / herself to the other party.

  According to this configuration, the external sound propagates to the ear canal E1 via the external sound propagation path 22h that does not pass through the sound propagation path 22b. Therefore, the external sound and the internal sound of the ear E can be mixed in the ear canal E1, and the mixed sound can be collected by the first microphone 24f via the sound propagation path 22b. Furthermore, external sound can be directly delivered to the user via the external sound propagation path 22h of the present embodiment.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, the partition 22t of the first embodiment is omitted, and the air chamber 22r is isolated via the sound propagation path 22b and the speaker 23. Thereby, the number of parts and the number of manufacturing steps of the earphone microphone 1 can be further reduced. Therefore, the manufacturing cost of the earphone microphone 1 can be further reduced.

<Third Embodiment>
Next, the configuration of the earphone microphone according to the third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a cross-sectional view of the right ear main body of the earphone microphone. Since the basic configuration of this embodiment is the same as that of the first embodiment described above with reference to FIGS. 1 to 4, the same reference numerals are assigned to the same components as those of the first embodiment. The description of the drawings and the description thereof will be omitted. In this embodiment, the partition part 22t of the first embodiment is omitted.

  A recess 24n is formed in the upper surface of the cover member 24m between the first sound collection hole 24h and the second sound collection hole 24k. The speaker 23 is attached to the microphone unit 24 by fitting the peripheral portion of the speaker 23 into the recess 24n. Note that, for example, an adhesive is applied to a portion of the peripheral portion of the speaker 23 that is not fitted in the concave portion 24 n and is adhered to the inner surface of the main body housing 22. As a result, the air chamber 22 r is isolated via the sound propagation path 22 b and the speaker 23.

  The earphone microphone 1 of the third embodiment includes an external audio propagation path 22h shown in FIG. The external sound propagation path 22h is composed of a groove that is recessed toward the radial center of the ear pad 21 provided on the outer surface of the ear pad 21. The external audio propagation path 22h extends from an external audio input unit 22n provided on the space side outside the ear pad 21 to an external audio output unit 22p provided on the ear canal E1 side. The external sound propagation path 22h secures a space that allows the space outside the ear E to communicate with the ear canal E even when the main body 2 is firmly attached to the user's ear E.

  The external sound propagation path 22h is formed independently of the sound propagation path 22b. In FIG. 7, a plurality of external audio output sections 22p are drawn and the external audio propagation paths 22h are provided at a plurality of locations, but the external audio propagation paths 22h may be provided at one location.

  According to this configuration, the external sound propagates to the ear canal E1 via the external sound propagation path 22h that does not pass through the sound propagation path 22b. Therefore, the external sound and the internal sound of the ear E can be mixed in the ear canal E1, and the mixed sound can be collected by the first sound collecting unit 24c via the sound propagation path 22b. Furthermore, external sound can be delivered directly to the user via the external sound propagation path 22h, and the external sound propagation path 22h can be simply configured.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, the cover member 24 m of the microphone portion 24 is provided with a recess 24 n into which the peripheral portion of the speaker 23 is fitted. Accordingly, the speaker 23 can be easily attached to the main body housing 22, and the speaker 23 is easily positioned between the first sound collection hole 24h and the second sound collection hole 24k.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  For example, a plurality of the above embodiments may be used in combination.

  In the first and third embodiments, the earphone microphone 1 includes the microphone unit 24 in which the first sound collecting unit 24c, the second sound collecting unit 24d, and the noise processing unit are integrated. In the second embodiment, the earphone microphone 1 is provided. Is provided with the first microphone 24f (first sound collecting unit), the second microphone 24g (second sound collecting unit), and the noise processing unit 27. Any combination of the microphone unit and the noise processing unit may be used. It may be applied to the earphone microphone.

  The present invention can be used in a voice input / output device.

1 Earphone microphone (voice input / output device)
2 Body 2R Body for the right ear (first body)
2L left ear body (second body)
21 ear pad 21a through hole 22 main body housing 22a opening 22b sound propagation path 22g second input sound hole 22h external sound propagation path 22k first input sound hole 22m external sound output sound hole (output sound hole)
22t Partition part 22r Air chamber 23 Speaker 23a Sound output surface 24 Microphone part 24c First sound collecting part 24d Second sound collecting part 24f First microphone (first sound collecting part)
24g Second microphone (second sound collection unit)
24h 1st sound collection hole 24k 2nd sound collection hole 24m Cover member 24n Concave part 25 Control part 27 Noise processing part

Claims (4)

A first main body portion and a second main body portion, each having an audio propagation path having an opening facing the inside of the user's ear at one end, and mounted on both ears of the user;
A first speaker arranged in the sound propagation path of the first main body,
A second speaker arranged in the sound propagation path of the second main body,
A microphone portion having a first sound collection hole facing the sound output surface of the first speaker;
And outputting sound from the first speaker and the second speaker when the microphone unit is not used, and stopping sound output from the first speaker and outputting sound from the second speaker when the microphone unit is used. Characteristic voice input / output device. An air chamber isolated via the sound propagation path of the first main body and the partition;
A first input sound hole provided in the first main body for communicating the ear canal and the outside;
A second input sound hole for communicating the air chamber with the outside of the first body part;
A second sound collection hole provided in the microphone portion and facing the air chamber;
A mixed sound consisting of an internal sound generated inside the ear and an external sound input from the first input sound hole is collected by the first sound collection hole and input from the second input sound hole Sound is collected through the second sound collection hole,
A noise processing unit for reducing the external sound included in the mixed sound by using the mixed sound collected by the first sound collecting hole and the external sound collected by the second sound collecting hole is provided. The voice input / output device according to claim 1, wherein:   The voice input / output device according to claim 2, wherein the partition portion includes a first speaker.   A cover member that opens the first sound collection hole and the second sound collection hole and covers the noise processing portion is provided in the microphone portion, and a concave portion in which the peripheral portion of the first speaker is fitted is provided in the cover member. The voice input / output device according to claim 3, wherein:

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