CN209608859U - A kind of hearing aid - Google Patents

Abstract

This application discloses a kind of hearing aids, the hearing aid is by MEMS directional microphone, MEMS loudspeaker and operation module are constituted, wherein, MEMS directional microphone has rotational freedom in preset plane, and its posture chooses instruction control according to the sound source of acquisition by operation module, the voice pickup direction of the hearing aid is determined according to the posture of MEMS directional microphone, meet the requirement that user selects alternative sounds to pick up direction, the hearing aid is allowed to listen to range of sounds according to what user selected, determine the voice pickup direction of hearing aid, realize the purpose that the hearing aid selectively amplifies sound, improve the usage experience of the person that listens to barrier when using the hearing aid.

Description

A kind of hearing aid

Technical field

This application involves acoustic equipment technical fields, more specifically to a kind of hearing aid.

Background technique

Sound is generated by object vibration, and occurent object is called sound source by we.The pressure that object vibration generates Reeb vibrates the phonophore of inner ear by air movement, these vibrations are converted into small electronics E.E.G by phonophore, from And people is enabled to perceive sound.

Hearing aid is a small-sized loudspeaker, it expands the sound that the person that listens to barrier can't hear originally, and recycling is listened The residual hearing of barrier person, enabling sound to be listened to barrier, person captures and is transferred to brain auditory center, to make to listen to barrier, person discovers To sound.

But although traditional hearing aid can help to listen to barrier person to hear the sound on periphery, its working principle is that week The sound that encloses carries out indiscriminate amplification, this to listen to barrier person also to experience pole while hearing useful target sound Big ambient noise brings adverse effect to the actual use experience for the person that listens to barrier.

Utility model content

In order to solve the above technical problems, the application provides a kind of hearing aid, to realize that hearing aid can select sound The purpose of selecting property amplification, usage experience of person when using hearing aid that promotion listens to barrier.

To achieve the above object, the application provides the following technical solutions:

A kind of hearing aid, comprising:

Multiple MEMS directional microphones, the MEMS directional microphone have the rotational freedom in preset plane；

The operation module being electrically connected with the MEMS directional microphone, the operation module are used to obtain the sound source of user Instruction is chosen, and the posture that instruction controls the MEMS directional microphone is chosen according to the sound source, so that the MEMS refers to Directional microphone obtains the acoustical signal of target sound source, and the acoustical signal is converted to electric signal；

The MEMS loudspeaker being electrically connected with the operation module, the MEMS loudspeaker are used for towards by acoustic target by institute It states electric signal and is converted to echo signal and transmitted to described by acoustic target.

Optionally, further includes: the first substrate；

Multiple MEMS directional microphones are distributed on first substrate；

First substrate surface is provided with the first interconnection circuit and multiple rotational structures, and first interconnection circuit is used for It is electrically connected the MEMS directional microphone and the MEMS loudspeaker；

The rotational structure is for connecting the MEMS directional microphone, so that the MEMS directional microphone has Rotational freedom in preset plane.

Optionally, the rotational structure is hinge arrangement.

Optionally, the MEMS directional microphone includes:

Second substrate, second substrate include the first surface being disposed opposite to each other, second surface and through described second The first acoustic aperture and the second acoustic aperture of substrate；

The second interconnection circuit, MEMS chip and encapsulating housing on the first surface；The encapsulating housing with it is described Second substrate forms closed cavity, and the MEMS chip is located in the closed cavity, and the MEMS chip covers described the The setting of one acoustic aperture；Second interconnection circuit is electrically connected the MEMS chip and first interconnection circuit；

The first metal-back of second acoustic aperture is covered positioned at the second surface, first metal backing is from described Two one side of substrates have third acoustic aperture；

Orthographic projection of the third acoustic aperture on second substrate and second acoustic aperture are non-overlapping；First gold medal Belong to shell, the second acoustic aperture and third acoustic aperture and constitutes the first sound channel.

Optionally, the MEMS directional microphone further include:

Signal amplification chip in the closed cavity, the signal amplification chip are electrically connected with the MEMS chip It connects.

Optionally, the MEMS chip and signal amplification chip are inverted structure chip；

The MEMS chip and signal amplification chip are electrically connected by second interconnection circuit.

Optionally, the MEMS directional microphone further include: the first bonding line and the second bonding line；

First bonding line links together the MEMS chip and the bonding of signal amplification chip；

The MEMS chip or the signal amplification chip are bonded by second bonding line with second interconnection circuit It links together.

Optionally, second substrate is printed circuit board or flexible circuit board.

It can be seen from the above technical proposal that the hearing aid is by MEMS directive property this application provides a kind of hearing aid Microphone, MEMS loudspeaker and operation module are constituted, wherein MEMS directional microphone has rotatably mounted in preset plane Degree, and its posture chooses instruction control according to the sound source of acquisition by operation module, so that the voice pickup direction of the hearing aid It can be determined according to the posture of MEMS directional microphone, meet the requirement that user selects alternative sounds to pick up direction, so that The hearing aid can listen to range of sounds according to what user selected, determine the voice pickup direction of hearing aid, realize described The purpose that hearing aid selectively amplifies sound improves the usage experience of the person that listens to barrier when using the hearing aid.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.

Fig. 1 is the structural schematic diagram of hearing aid in the prior art；

Fig. 2 is a kind of structural schematic diagram for hearing aid that one embodiment of the application provides；

Fig. 3 is a kind of overlooking structure diagram for hearing aid that one embodiment of the application provides；

Fig. 4 is a kind of the schematic diagram of the section structure for MEMS directional microphone that one embodiment of the application provides；

Fig. 5 is a kind of the schematic diagram of the section structure for MEMS directional microphone that another embodiment of the application provides；

Fig. 6 is a kind of the schematic diagram of the section structure for MEMS directional microphone that another embodiment of the application provides；

Fig. 7 is a kind of the schematic diagram of the section structure for MEMS directional microphone that the further embodiment of the application provides；

Fig. 8 is a kind of cross-section structure signal for MEMS directional microphone that the alternative embodiment of the application provides Figure.

Specific embodiment

As described in background, hearing aid in the prior art is deposited as just an indiscriminate miniature loudspeaker Structure loudspeaker 20 and microphone 10 as shown in Figure 1, be made of, wherein microphone 10 is for indiscriminate the pickups external world Sound, and external sound is converted into electric signal from vibration signal and is transmitted to loudspeaker 20.Loudspeaker 20 is receiving the telecommunications After number, conversion of the electric signal to acoustical signal is carried out to it, to realize the amplification of external sound.

But since indifference of the microphone 10 for sound is amplified, it is assumed that user B is talked to user A, while body Vehicle is passed through on side, and the traveling sound and speaker sound of vehicle and the sound of speaking of user B can be picked up by microphone 10, and by Loudspeaker 20 amplifies, so that user A has received the noisy sound largely in addition to user's B sound of speaking, to the use of user A Experience brings huge adverse effect.

In view of this, the embodiment of the present application provides a kind of hearing aid, comprising:

MEMS directional microphone, the MEMS directional microphone have the rotational freedom in preset plane；

The operation module being electrically connected with the MEMS directional microphone, the operation module are used to obtain the sound source of user Instruction is chosen, and the posture that instruction controls the MEMS directional microphone is chosen according to the sound source, so that the MEMS refers to Directional microphone obtains the acoustical signal of target sound source, and the acoustical signal is converted to electric signal；

The MEMS loudspeaker being electrically connected with the operation module, the MEMS loudspeaker are used for towards by acoustic target by institute It states electric signal and is converted to echo signal and transmitted to described by acoustic target.

The hearing aid is made of MEMS directional microphone, MEMS loudspeaker and operation module, wherein MEMS directive property Microphone has rotational freedom in preset plane, and its posture chooses instruction control according to the sound source of acquisition by operation module System determines the voice pickup direction of the hearing aid according to the posture of MEMS directional microphone, meets user It selects alternative sounds to pick up the requirement in direction, allows the hearing aid to listen to range of sounds according to what user selected, determine The voice pickup direction of hearing aid realizes the purpose that the hearing aid selectively amplifies sound, improves the person that listens to barrier Usage experience when using the hearing aid.

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.

" embodiment " mentioned by this specification or similar term indicate characteristic related with embodiment, structure or feature, Including in at least embodiment of the application.Therefore, this specification occurs term " in one embodiment " " is being implemented In example " and similar to term possibility but it is not necessarily all direction identical embodiment.

Furthermore herein described characteristic, structure or feature can combine in any way in one or more embodiments. Illustrate to provide many specific details below to provide the understanding to the embodiment of the present application.However the ordinary skill of related fields Personnel will be seen that the application, even if not utilizing wherein one or more specific details, or utilize other methods, component, material Deng also implementable.It on the other hand, is the application that avoids confusion, well known structure, material or operation do not have a detailed description.

The embodiment of the present application provides a kind of hearing aid, as shown in Figure 2, comprising:

MEMS directional microphone 100, the MEMS directional microphone 100 have rotatably mounted in preset plane Degree；

The operation module 300 being electrically connected with the MEMS directional microphone 100, the operation module 300 is for obtaining The sound source of user chooses instruction, and chooses the posture that instruction controls the MEMS directional microphone according to the sound source, so that The MEMS directional microphone obtains the acoustical signal of target sound source, and the acoustical signal is converted to electric signal；

The MEMS loudspeaker 200 being electrically connected with the operation module 300, the MEMS loudspeaker 200 is towards by acoustic target TA is transmitted to described by acoustic target TA for the electric signal to be converted to echo signal.

In the present embodiment, the operation module 300 includes main control chip and listens to sound operation interface, described to listen to sound Sound operation interface can be touch screen or the operation panel including multiple keys.When user needs to pick up the sound in a direction When, the virtual key or physical button of corresponding position can be triggered by touch screen and operation panel, it is described after which is triggered Sound source corresponding with the key is chosen instruction triggers by main control chip, and the MEMS directional microphone is chosen according to the sound source Instruction adjustment posture is to optimum state, and to realize the purpose for the acoustical signal for receiving sound source set by user, the acoustical signal is by MEMS After directional microphone is converted to electric signal, MEMS loudspeaker is transferred to by operation module 300, so that the MEMS loudspeaker will Electric signal is converted to echo signal and is transmitted to described by acoustic target TA, to realize the amplification of the acoustical signal of target sound source, thus real The now function of hearing aid with directional reception, low-power consumption.

The control logic of the above process can be realized by existing single-chip microcontroller or operation chip.Such as a certain model For chip, which has input pin A, B and C and output pin D, E and F, and when key 1 is triggered, input pin A is received Trigger electric signal, triggering output pin D works, to work with output pin D directional microphone connect, to pick up and The sound in the corresponding region of directional microphone of output pin D connection.

In addition, rotational freedom of the MEMS directional microphone 100 in preset plane can further promote work The direction selection of the voice pickup of the directional microphone of work.User can also be by rotating the MEMS directional microphone 100 realize the selection in emphasis voice pickup direction.

In the present embodiment, MEMS directional microphone 100 in preset plane have rotational freedom, and its posture by Operation module 300 controls, and allows the voice pickup direction of the hearing aid according to the posture of MEMS directional microphone 100 It determines, meets user and alternative sounds is selected to pick up the requirement in direction, the hearing aid is listened according to what user selected Range of sounds is taken, determines the voice pickup direction of hearing aid, realizes the mesh that the hearing aid selectively amplifies sound , improve the usage experience of the person that listens to barrier when using the hearing aid.

In addition, the posture of the MEMS directional microphone 100 is included in default flat in some embodiments of the present application The direction of 100 primary recipient sound source of rotational angle and/or MEMS directional microphone in face and/or the MEMS directive property wheat The working condition of gram wind 100.The working condition of the MEMS directional microphone 100 includes open state and closed state.

On the basis of the above embodiments, in one embodiment of the application, with reference to Fig. 3, the hearing aid further include: First substrate 400；

Multiple MEMS directional microphones 100 are distributed on first substrate 400；

First substrate, 400 surface is provided with the first interconnection circuit and multiple rotational structures, first interconnection circuit For being electrically connected the MEMS directional microphone 100 and the MEMS loudspeaker 200；

The rotational structure is for connecting the MEMS directional microphone 100, so that the MEMS directional microphone 100 with the rotational freedom in preset plane.

Optionally, the rotational structure is hinge arrangement.

In Fig. 3, further it is shown that the operation module 300 listens to sound operation interface 500, and the sound of listening to operates Interface 500 is set on the first substrate 400, in order to be electrically connected with other structures on the first substrate 400.

In the other embodiments of the application, the sound operation interface 500 of listening to can also be with first substrate 400 It is separately positioned, the communication connection with the other structures on the first substrate 400 is realized by wireless transport module.

On the basis of the above embodiments, in another embodiment of the application, as shown in figure 4, the MEMS is directed toward Property microphone 100 includes:

Second substrate 101, second substrate 101 include the first surface being disposed opposite to each other, second surface and through institute State the first acoustic aperture 105 and the second acoustic aperture 106 of the second substrate 101；

The second interconnection circuit, MEMS chip 103 and encapsulating housing 102 on the first surface；The encapsulating housing 102 form closed cavity with second substrate 101, and the MEMS chip 103 is located in the closed cavity, and the MEMS Chip 103 covers first acoustic aperture 105 and is arranged；Second interconnection circuit is electrically connected the MEMS chip 103 and described the One interconnection circuit；

The first metal-back 104 of second acoustic aperture 106, first metal-back 104 are covered positioned at the second surface There is third acoustic aperture 107 away from 101 side of the second substrate；

Orthographic projection of the third acoustic aperture 107 on second substrate 101 and second acoustic aperture 106 are non-overlapping； First metal-back 104, the second acoustic aperture 106 and third acoustic aperture 107 constitute the first sound channel.

Wherein, MEMS chip 103 is the transducer part that voice signal is converted to electric signal, can use MEMS The production of (Micro-Electro-Mechanical System, MEMS) technique.

Optionally, second substrate 101 is printed circuit board (Printed Circuit Board, PCB) or flexible electrical Road plate (Flexible Printed Circuit, FPC)).

In the present embodiment, the first sound that first metal-back 104, the second acoustic aperture 106 and third acoustic aperture 107 are constituted Channel and the first acoustic aperture 105 form two sound channels for entering closed cavity, reach from sound is physically increased The path difference of 103 vibrating diaphragm two sides of MEMS chip.When external environment has the voice input of different angle, sound reaches the strong of vibrating diaphragm Degree and time can generate difference, that is, the MEMS directional microphone 100 produces difference to the sound from different directions Sensitivity, MEMS chip 103 generated under the collective effect of two-way sound wave electric signal output, to realize MEMS directive property The good directive property of microphone 100.

In some embodiments of the present application, the MEMS directional microphone 100 further include: be set to first sound Damping structure in sound channel, the damping structure are used to reduce the acoustic pressure in first sound channel.

On the basis of the above embodiments, in another embodiment of the application, as shown in figure 5, the MEMS is directed toward Property microphone 100 further include:

Signal amplification chip 108 in the closed cavity, the signal amplification chip 108 and the MEMS chip 103 electrical connections.

The signal amplification chip 108, the electric signal for exporting MEMS chip 103 amplifies, and is handled, To realize the amplification of sound.

The signal amplification chip 108 can be based on integrated circuit (Application Specific Integrated Circuit, ASIC) technique preparation.

The specific structure and working principle of the MEMS chip 103 and the signal amplification chip 108 have been this field skill Known to art personnel, itself ask that this will not be repeated here.

On the basis of the above embodiments, in the further embodiment of the application, the MEMS chip 103 and signal are put Large chip 108 is inverted structure chip；

The MEMS chip 103 and signal amplification chip 108 are electrically connected by second interconnection circuit.

In the present embodiment, the MEMS chip 103 and signal amplification chip 108 are inverted structure chip, i.e., described The functional structure of MEMS chip 103 and signal amplification chip 108 is arranged towards second substrate 101, so that the MEMS core The functional structure of piece 103 and signal amplification chip 108 can be directly electrically connected with second interconnection circuit, and then described in realization The electrical connection of MEMS chip 103 and the signal amplification chip 108.

On the basis of the above embodiments, in the alternative embodiment of the application, as shown in fig. 6, the MEMS refers to Directional microphone 100 further include: the first bonding line 109 and the second bonding line 110；

First bonding line 109 links together the MEMS chip 103 and the bonding of signal amplification chip 108；

Second bonding line 110 interconnects the MEMS chip 103 or the signal amplification chip 108 and described second Route bonding links together.

In the present embodiment, the MEMS chip 103 and the signal amplification chip 108 are formal dress fabric chip, i.e., The functional structure of the MEMS chip 103 and the signal amplification chip 108 faces away from second substrate, 101 side, Therefore it needs to be bonded MEMS chip 103, signal amplification chip 108 and second interconnection circuit by way of bonding line and connect It is connected together.

On the basis of the above embodiments, in another alternative embodiment of the application, as shown in fig. 7, the MEMS Directional microphone 100 further include:

Positioned at the second surface, the first Air Filter 111 of first acoustic aperture 105 is covered；

Deviate from 101 side of the second substrate positioned at first metal-back 104, covers the of the third acoustic aperture 107 Two Air Filters 112.

First Air Filter 111 and the second Air Filter 112 are conducive to increase the close of the MEMS directional microphone 100 Closing property avoids impurity particle from occurring by the situation that acoustic aperture structure enters inside MEMS directional microphone 100.

On the basis of the above embodiments, in another alternative embodiment of the application, as shown in figure 8, the MEMS Directional microphone 100 further include: the second metal-back 116 and third Air Filter 115, second metal-back 116 is away from described Second substrate, 101 side has falling tone hole 114；

Second metal-back 116 covers first acoustic aperture 105, and the falling tone hole 114 is in second substrate 101 On orthographic projection and first acoustic aperture 105 it is non-overlapping；

The falling tone hole 114, the first acoustic aperture 105 and the second metal-back 116 constitute second sound channel.

In the present embodiment, it is constituted by increased falling tone hole 114 and the second metal-back 116 with the first acoustic aperture 105 Second sound channel can further adjust the MEMS directional microphone 100 for the acoustic sensitivity of different angle.

In conclusion the embodiment of the present application provides a kind of hearing aid, the hearing aid by MEMS directional microphone, MEMS loudspeaker and operation module are constituted, wherein MEMS directional microphone has rotational freedom, and its in preset plane Working condition is controlled by operation module, allows the voice pickup direction of the hearing aid according to MEMS directional microphone Working condition determines, meets user and alternative sounds is selected to pick up the requirement in direction, allow the hearing aid according to user Range of sounds is listened in selection, determines the voice pickup direction of hearing aid, is realized the hearing aid and is carried out selectivity to sound The purpose of amplification improves the usage experience of the person that listens to barrier when using the hearing aid.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (8)

1. a kind of hearing aid characterized by comprising

Multiple MEMS directional microphones, the MEMS directional microphone have the rotational freedom in preset plane；

The operation module being electrically connected with the MEMS directional microphone, the sound source that the operation module is used to obtain user are chosen Instruction, and the posture that instruction controls the MEMS directional microphone is chosen according to the sound source, so that the MEMS directive property Microphone obtains the acoustical signal of target sound source, and the acoustical signal is converted to electric signal；

The MEMS loudspeaker being electrically connected with the operation module, the MEMS loudspeaker are used for towards by acoustic target by the electricity Signal is converted to echo signal and is transmitted to described by acoustic target.

2. hearing aid according to claim 1, which is characterized in that further include: the first substrate；

Multiple MEMS directional microphones are distributed on first substrate；

First substrate surface is provided with the first interconnection circuit and multiple rotational structures, and first interconnection circuit is for being electrically connected Connect the MEMS directional microphone and the MEMS loudspeaker；

The rotational structure is preset for connecting the MEMS directional microphone so that the MEMS directional microphone has Rotational freedom in plane.

3. hearing aid according to claim 2, which is characterized in that the rotational structure is hinge arrangement.

4. hearing aid according to claim 2, which is characterized in that the MEMS directional microphone includes:

Second substrate, second substrate include the first surface being disposed opposite to each other, second surface and through second substrate The first acoustic aperture and the second acoustic aperture；

The second interconnection circuit, MEMS chip and encapsulating housing on the first surface；The encapsulating housing and described second Substrate forms closed cavity, and the MEMS chip is located in the closed cavity, and the MEMS chip covers first sound Hole setting；Second interconnection circuit is electrically connected the MEMS chip and first interconnection circuit；

The first metal-back of second acoustic aperture is covered positioned at the second surface, first metal backing is from second lining Bottom side has third acoustic aperture；

Orthographic projection of the third acoustic aperture on second substrate and second acoustic aperture are non-overlapping；First metal Shell, the second acoustic aperture and third acoustic aperture constitute the first sound channel.

5. hearing aid according to claim 4, which is characterized in that the MEMS directional microphone further include:

Signal amplification chip in the closed cavity, the signal amplification chip are electrically connected with the MEMS chip.

6. hearing aid according to claim 5, which is characterized in that the MEMS chip and signal amplification chip are upside-down mounting Fabric chip；

The MEMS chip and signal amplification chip are electrically connected by second interconnection circuit.

7. hearing aid according to claim 5, which is characterized in that the MEMS directional microphone further include: the first key Zygonema and the second bonding line；

First bonding line links together the MEMS chip and the bonding of signal amplification chip；

The MEMS chip or the signal amplification chip are bonded connection with second interconnection circuit by second bonding line Together.

8. hearing aid according to claim 4, which is characterized in that second substrate is printed circuit board or flexible circuit Plate.