CN111163412A

CN111163412A - Multichannel hearing aid device

Info

Publication number: CN111163412A
Application number: CN202010071316.5A
Authority: CN
Inventors: 文卫平; 蓝天翔; 姜鸿彦; 赵非; 李华伟
Original assignee: Foshan Bozhi Medical Technology Co ltd
Current assignee: Foshan Bozhi Medical Technology Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-05-15

Abstract

The invention discloses a multi-channel hearing aid device, which comprises an earphone and a host, wherein the earphone is connected with the host, the host comprises a sound input module, a controller, a DSP chip and a sound output module, the DSP chip comprises a left channel DSP and a right channel DSP, the sound output module comprises a left sound channel output module and a right sound channel output module, the sound input module comprises a microphone array input module, the microphone array input module is respectively connected with the left channel DSP and the right channel DSP, the left channel DSP is connected with the left sound channel output module, the right channel DSP is connected with the right sound channel output module, and the left sound channel output module and the right sound channel output module are both connected with the earphone. The multichannel hearing aid device effectively utilizes the advantage of large internal space of the box-type hearing aid, overcomes the defects of various hearing aid sound acquisition and DSP systems, effectively simulates the sound acquisition forms of the left ear and the right ear of a human body, and greatly improves the listening effect in a noise environment.

Description

Multichannel hearing aid device

Technical Field

The invention relates to the field of hearing aids, in particular to a multichannel hearing aid device.

Background

Generally, a hearing aid only has one set of microphone system and is responsible for collecting sound; and the loudspeaker system is responsible for outputting the sound amplified by the DSP circuit of the hearing aid, so that the deaf user can compensate the hearing and listen. The design is convenient to use, but the hearing aid effect is not good. Besides the poor sound processing effect caused by the design problem of the hearing aid line, another important reason is the monaural hearing aid. Most deafness is a loss of hearing in both ears, which is superior to the single ear in terms of hearing effect even in normal hearing. Due to the defect of the single-ear hearing aid of the box-type hearing aid, the economically applicable hearing aid mode is replaced by the expensive ear-hanging or ear-canal hearing aid, and the expensive hearing aids do not bring more satisfaction and better effect to the deaf patient, so that the situation that 80% of the old people are reluctant to use the hearing aid due to the limitation of the expensive price rather than the recovery selection of the hearing aid, namely the situation that the hearing aid is not purchased, and the situation that the effect is not too good and the price is too expensive is caused.

At present, the domestic hearing aid market is monopolized by imported hearing aids, and popular hearing aid styles are two types: the first is the behind-the-ear hearing aid, which is hung behind the auricle; the other is an in-the-canal hearing aid which is inserted into the external auditory canal, similar to a conventional in-the-ear earphone. The two hearing aids are made smaller and smaller, because the hearing-impaired people are not willing to let others know the hearing defects of the hearing aids, manufacturers change the hearing aids blindly for the most beautiful appearance, and the smallest hearing aids are difficult to avoid, namely, the number and the positions of microphones are limited, so that the effect of the modern hearing aids in noisy environments is often poor. At present, many manufacturers try to improve the listening effect by researching and developing a new DSP system, but the problem is not obvious breakthrough, but the price of the hearing aid is high, so that most of hearing-impaired people cannot afford the hearing-impaired people, and finally the hearing aid is selected to be abandoned. If a low-cost behind-the-ear or in-the-canal hearing aid is selected, the hearing effect is poor and is more difficult for the user to accept.

Disclosure of Invention

The invention provides a multichannel hearing aid device, which can effectively utilize the advantage of large internal space of a box-type hearing aid and make up the defects of various hearing aid sound acquisition and DSP systems. Meanwhile, the hearing aid is low in cost, and the product can help people in need to save 90% of expenditure, is hopeful to replace an imported hearing aid product, enables people in need to use a more economical product to solve the problems of hearing, hearing protection and the like, and can at least solve one of the problems.

In order to achieve the above object, according to one aspect of the present invention, a multi-channel hearing aid device is provided, which includes an earphone and a host, the earphone is connected to the host, the host includes a sound input module, a controller, a DSP chip and a sound output module, the DSP chip includes a left channel DSP and a right channel DSP, the sound output module includes a left channel output module and a right channel output module, the sound input module includes a microphone array input module, the microphone array input module is respectively connected to the left channel DSP and the right channel DSP, the left channel DSP is connected to the left channel output module, the channel DSP is connected to the right channel output module, and both the left channel output module and the right channel output module are connected to the earphone.

Therefore, the multichannel hearing aid device effectively utilizes the advantage of large internal space of a box-type hearing aid, overcomes the defects in the aspects of sound collection and DSP systems of various hearing aids, arranges left and right channels in a DSP chip, independently collects sound by using a microphone array input module, independently transmits the sound to the left and right channels of the DSP chip for processing, and finally independently outputs the sound by a left sound channel output module and a right sound channel output module. The multi-channel hearing aid device effectively simulates the sound collection form of the left ear and the right ear of a human body, and greatly improves the listening effect in a noise environment. Meanwhile, the hearing aid is low in cost, and the product can help people in need to save 90% of expenditure, is hopeful to replace an imported hearing aid product, enables people in need to use more economical products, and solves the problems of hearing, hearing protection and the like.

In some embodiments, the microphone array input module includes a housing and a microphone array assembly installed in the housing, the microphone array assembly is installed in the housing, the microphone array assembly includes at least two microphones, the housing is provided with sound inlet holes corresponding to the microphones, and the sound inlet holes are connected to the microphones. Therefore, the microphone array component collects external sound signals through the sound inlet holes in the shell and converts the external sound signals into electric signals; the DSP chip is used for processing signals transmitted by the microphone array component; the controller is used for controlling the DSP chip and carrying out microphone directivity switching, mode conversion and the like. Because the device is provided with a plurality of microphone array components, external sound can be excellently collected and subjected to detail processing, and processed sound signals are transmitted into ears through loudspeakers in the earphones, so that a better and more real listening effect is achieved. Even if the stereo-audio-visual device is used in a complex scene, a user can obviously and clearly listen to speech sounds from all directions, and the stereo-visual-audio-visual.

In some embodiments, the microphone array input module further includes a connector and an adapter, the housing is connected to the connector, the signal line of each microphone is connected to the connector, the adapter is provided with a mounting groove, the connector is matched with the mounting groove, and the connector is connected to the DSP chip through the adapter. Therefore, the signal wire of each microphone is welded to a connector, the connector is equivalent to a plug, when in use, the connector is inserted into the mounting groove of the adapter (equivalent to a socket) corresponding to the connector, and the connector is communicated with the DSP chip through the adapter. When the sound source device is used, the shell can be manually rotated, so that the sound inlet hole faces to the required sound source direction; the driving piece can be arranged to drive the adapter to drive the whole device to rotate, so that electric adjustment is realized. The device can enable the microphone array component to effectively identify and collect effective sound sources in the surrounding environment in a manual or electric mode. When the microphone array input module is used in combination with the box-type hearing aid, the body can be used for shielding or blocking the sound at the rear side of the body and adjusting the microphones to point to the front of the body, so that the communication between a user and a person facing each other can be improved, and the interference of the sound at the rear side is reduced. On the other hand, since the ear-hang type hearing aid or the ear canal type hearing aid cannot use the body as a sound barrier and cannot adjust the microphone direction, the hearing aid is not always an expensive short plate of the hearing aid in a noisy environment or an environment with many people. The hearing aid device of the invention utilizes the microphone array input module, not only solves the problem of short board of the prior hearing aid, but also can be popularized and used because the box-type hearing aid has low price (only one tenth of the prior hearing aid), convenient use and fashionable appearance design and is matched with a fashionable earphone product, thereby improving the hearing protection and recovery popularization rate and reducing the incidence rate of hearing loss and hearing disability.

In some embodiments, the microphone array input module further includes a turntable fixedly mounted at the bottom of the adaptor, and a driving member in power connection with the turntable for driving the turntable to rotate. Therefore, the adapter can be connected with driving parts such as a micro motor and the like, the adapter is driven to rotate by the rotation of the motor, and finally the shell is driven to rotate, so that the pointing direction of the microphone can be electrically adjusted.

In some embodiments, the microphone array input module further includes a fastener, one end of which is fixedly installed on an inner wall of the installation groove, and the other end of which is engaged with an outer wall of the connector. Therefore, in order to enable the connector to be in stable contact with the adapter in the process of rotating for multiple times, the fastener is additionally arranged on the inner wall of the mounting groove, and the connector and the adapter can be kept in stable contact through the fastening effect of the fastener.

In some embodiments, the fastener is a plurality of fasteners, and the fastener is a metal dome. Therefore, the fastening pieces are U-shaped or V-shaped metal elastic pieces and are multiple, the fastening effect is good, and the fastening pieces can be contracted.

In some embodiments, the sound inlet holes are multiple, the multiple sound inlet holes are distributed in a central circumferential array of the shell, the microphone array assembly comprises multiple microphones and multiple simulated auditory canals, the number of the microphones and the number of the simulated auditory canals are the same as the number of the sound inlet holes, the microphones are connected with the DSP chip, one ends of the simulated auditory canals are connected with the sound inlet holes, and the other ends of the simulated auditory canals are connected with the microphones. Therefore, the arrangement of the sound inlet holes, the microphones and the simulated auditory canals is beneficial to the collection and comparison of the sound collection device on each azimuth sound, and is beneficial to speech enhancement and noise reduction. The purpose of setting up emulation canal is the physiological structure of emulation human real ear external auditory canal as far as possible, and better obtaining detailed information, simultaneously because emulation canal sets up in the front end of microphone, external sound can be earlier through this section emulation canal after leading into from the sound inlet hole, reachs the microphone again. Therefore, the sound signals finally heard by the hearing-impaired people wearing the hearing aid have more complete detailed information as the sound signals directly transmitted from the real ears.

In some embodiments, the simulated ear canal is curved and the width of the simulated ear canal tapers inwardly from the sound entry aperture. Therefore, the collection and amplification of the sound signal are facilitated.

In some embodiments, the host further includes a housing, and the sound input module, the controller, the DSP chip, and the sound output module are all mounted in the housing, and the housing is wrapped around the adapter. Therefore, each part can be completely coated by the shell, and only the shell of the microphone array input module is exposed. The appearance of the shell of the host can be similar to that of the MP3, and is beautiful and elegant.

In some embodiments, the sound input module may further include one or more of a bluetooth input module, an audio reservoir input module, or a USB sound card input module. From this, can select different modes to carry out the input of sound according to actual demand, application scope is wide, and the practicality is strong.

In some embodiments, the left channel output module comprises a left channel filter and a left channel amplifier, the left channel filter is connected with the left channel DSP, the left channel amplifier is connected with the left channel filter, the right channel output module comprises a right channel filter and a right channel amplifier, the right channel filter is connected with the right channel DSP, the right channel amplifier is connected with the right channel filter, and the left channel amplifier and the right channel amplifier are both connected with the earphone. Thus, the filter is used for filtering and selecting the sound signals processed by the DSP chip, and the amplifier is used for amplifying the sound signals.

In some embodiments, the sound output module further includes a bluetooth transmitting module, the left channel amplifier and the right channel amplifier are both connected to the bluetooth transmitting module, a bluetooth receiving module is disposed in the earphone, and the bluetooth receiving module is in communication connection with the bluetooth transmitting module. Therefore, the Bluetooth transmitting module is used for being in Bluetooth connection with the Bluetooth receiving modules on the single side or the two sides of the earphone. The host and the earphone are connected through Bluetooth, can be used in a separated and matched mode, and are convenient to operate.

The invention has the beneficial effects that:

the multichannel hearing aid device effectively utilizes the advantage of large internal space of a box-type hearing aid, overcomes the defects of various hearing aid sound acquisition and DSP systems, arranges a left channel and a right channel in a DSP chip, independently acquires sound by using a microphone array input module, independently transmits the sound to the left channel and the right channel for DSP processing, and finally independently outputs the sound by a left sound channel output module and a right sound channel output module respectively. The multi-channel hearing aid device effectively simulates the sound collection form of the left ear and the right ear of a human body, and greatly improves the listening effect in a noise environment. Meanwhile, the hearing aid is low in cost, and the product can help people in need to save 90% of expenditure, is hopeful to replace an imported hearing aid product, enables people in need to use more economical products, and solves the problems of hearing, hearing protection and the like.

The device can enable the microphone array component to effectively identify and collect effective sound sources in the surrounding environment in a manual or electric mode. When the microphone array input module is used in combination with the box-type hearing aid, the body can be used for shielding or blocking the sound at the rear side of the body and adjusting the microphones to point to the front of the body, so that the communication between a user and a person facing each other can be improved, and the interference of the sound at the rear side is reduced. On the other hand, since the ear-hang type hearing aid or the ear canal type hearing aid cannot use the body as a sound barrier and cannot adjust the microphone direction, the hearing aid is not always an expensive short plate of the hearing aid in a noisy environment or an environment with many people. The hearing aid device of the invention utilizes the microphone array input module, not only solves the problem of short board of the prior hearing aid, but also can be popularized and used because the box-type hearing aid has low price (only one tenth of the prior hearing aid), convenient use and fashionable appearance design and is matched with a fashionable earphone product, thereby improving the hearing protection and recovery popularization rate and reducing the incidence rate of hearing loss and hearing disability.

Drawings

Fig. 1 is a schematic structural diagram of a microphone array input module of the multichannel hearing aid device of embodiment 1;

fig. 2 is a schematic cross-sectional view of a housing of the microphone array input module shown in fig. 1;

fig. 3 is a schematic diagram of a control circuit structure of the multichannel hearing aid device according to embodiment 1;

fig. 4 is a schematic diagram of a control circuit configuration of the multichannel hearing aid device according to embodiment 2.

Reference numerals in FIGS. 1 to 4: 1-an earphone; 2-a host; 11-a bluetooth receiving module; 22-a sound input module; 22A-a microphone array input module; 22B-a Bluetooth input module; 22C-audio reservoir input module; 22D-USB sound card input module; 23-a controller; 24-a DSP chip; 24A-left channel DSP; 24B-right channel DSP; 25-a sound output module; 25A-left channel output module; 25B-right channel output module; 25C-Bluetooth transmitting module; 26-a power supply module; 27-a key module; 28-an indicator light module; 221-a housing; 222-a microphone array component; 223-connector; 224-an adapter; 225-a turntable; 226-a drive member; 227-a fastener; 251-a left channel filter; 252-left channel amplifier; 253-right channel filter; 254-right channel amplifier; 221 a-sound entrance hole; 222 a-microphone; 222 b-simulated ear canal; 224 a-mounting groove; 224 b-linker.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

Fig. 1-3 schematically show a multichannel hearing device of embodiment 1.

As shown in fig. 1 to 3, the multichannel hearing aid device includes an earphone 1 and a main unit 2, and the earphone 1 is connected to the main unit 2. The host 2 includes a sound input module 22, a controller 23, a DSP chip 24, and a sound output module 25. The DSP chip 24 includes a left channel DSP24A and a right channel DSP 24B. The sound output module 25 includes a left channel output module 25A and a right channel output module 25B. The sound input module 22 includes a microphone array input module 22A. The microphone array input module 22A is connected to the left channel DSP24A and the right channel DSP24B, the left channel DSP24A is connected to the left channel output module 25A, the channel DSP is connected to the right channel output module 25B, and both the left channel output module 25A and the right channel output module 25B are connected to the headphone 1.

The microphone array input module 22A includes a housing 221 and a microphone array assembly 222 mounted within the housing 221. The microphone array assembly 222 is installed in the housing 221, the microphone array assembly 222 includes at least two microphones 222a, the housing 221 is provided with sound inlet holes 221a corresponding to the microphones 222a, and the sound inlet holes 221a are connected to the microphones 222 a. Thus, the microphone array assembly 222 collects an external sound signal through the sound inlet hole 221a of the casing 221 and converts it into an electrical signal; the DSP chip 24 is used to process the signals transmitted by the microphone array component 222; the controller 23 is used to control the DSP chip 24 to perform directivity switching, mode switching, and the like of the microphone 222 a. Since the device is provided with a plurality of microphone array components 222, external sound can be excellently collected and processed in detail, and processed sound signals are transmitted into the ears through the loudspeaker in the earphone 1, so that better and more real listening effect is achieved. Even if the stereo-audio-visual device is used in a complex scene, a user can obviously and clearly listen to speech sounds from all directions, and the stereo-visual-audio-visual.

The microphone array input module 22A also includes a connector 223 and an adaptor 224. The housing 221 is connected to a connector 223, and a signal line of each microphone 222a is soldered to the connector 223. The adaptor 224 is formed with a mounting groove 224a, and the connector 223 is fitted to the mounting groove 224 a. The connector 223 is connected to the DSP chip 24 through the adaptor 224. The upper end of the connector 223 and the housing 221 of the present embodiment may be connected to form an integral structure by sleeving, bonding, welding, or the like, and the lower end of the connector 223 may be matched with the mounting groove 224a of the adapter 224 and may be detachably connected, for example, the lower end of the connector 223 is in a truncated cone shape, the mounting groove 224a is in a truncated cone shape matched with the mounting groove 224a, and the connector 223 is inserted into the mounting groove 224a to communicate the connector 223 and the adapter 224.

Thus, the signal line of each microphone 222a is soldered to the connector 223, the connector 223 is equivalent to a "plug", and when in use, the connector 223 is inserted into the mounting slot 224a of the corresponding adapter 224 (corresponding to a "socket"), and the adapter 224 is in communication with or electrically connected to other signal processing systems (such as the DSP chip 24), a power supply, and the like. When in use, the shell 221 can be manually rotated to enable the sound inlet hole 221a to face to the required sound source direction; the driving member 226 may also be arranged to drive the adaptor 224, so as to drive the whole device to rotate, thereby realizing electric adjustment. The device can make the microphone array component 222 effectively identify and collect effective sound sources in the surrounding environment in a manual or electric mode, is small and secret, and can be installed in various devices needing to pick up sound sources, such as hearing aids, sound systems, speech systems and the like.

The microphone array input module 22A of the present embodiment further includes a fastener 227. One end of the fastening member 227 is fixedly mounted to the inner wall of the mounting groove 224a by means of a screw or an adhesive, and the other end is fitted to the outer wall of the connector 223. Therefore, in order to make the connector 223 and the adapter 224 stably contact in the process of multiple rotations, the fastener 227 is additionally arranged on the inner wall of the mounting groove 224a, and the contact between the connector 223 and the adapter 224 can be kept stable through the fastening action of the fastener 227.

The number of the fastening members 227 is plural, and the fastening members 227 are metal clips. Therefore, the fastening pieces 227 are U-shaped or V-shaped metal elastic pieces and are multiple, the fastening effect is good, and the fastening pieces can be contracted.

As shown in fig. 2, the sound inlet holes 221a are plural, and the plural sound inlet holes 221a are distributed in a central circumferential array of the casing 221. The microphone array assembly 222 includes a plurality of microphones 222a and a plurality of simulated ear canals 222 b. The number of microphones 222a and the number of simulated ear canals 222b are the same as the number of sound inlet holes 221 a. The number of the sound inlet holes 221a, the microphones 222a and the simulated ear canals 222b may be set to 2, 4, 8 or more according to the requirement. As shown in fig. 2, the number of the sound inlet holes 221a, the microphone 222a, and the artificial auditory canal 222b in the present embodiment is 4. The signal line of each microphone 222a is soldered to the connector 223, and one end of the artificial ear canal 222b is connected to the sound inlet hole 221a and the other end is connected to the microphone 222 a. The microphone 222a is adhesively fixed to the edge of the simulated ear canal 222b without a gap in the middle. The arrangement of the sound inlet holes 221a, the microphones 222a and the simulated auditory canals 222b is beneficial to the collection and comparison of each azimuth sound by the sound collection device, and is beneficial to speech enhancement and noise reduction.

In the present embodiment, the outer shapes of the housing 221, the connector 223, and the adapter 224 may be cylindrical, and the housing 21 of the host 2 may be rectangular.

As shown in fig. 2, the artificial ear canal 222b of the present embodiment has a curved shape and the width of the artificial ear canal 222b gradually narrows from the sound inlet hole 221a inward. Therefore, the simulated auditory canal 222b adopts a funnel-shaped structure with a wide front part and a narrow back part which are slightly turned, aims to simulate the physiological structure of the external auditory canal of the real ear as much as possible, and is beneficial to the collection and amplification of sound signals. The simulated ear canal 222b is a structure that mimics the external auditory canal of a human ear and is 23 mm in length (the external auditory canal of a normal human ear is about 21-25 mm in length). The plurality of simulated ear canals 222b are all obliquely arranged and distributed in a central circumferential array of the shell 221. Thus, the angled placement of the simulated ear canal 222b and the distribution in the central circumferential array of the shell 221 is a space-saving design. The simulated ear canal 222b of the present embodiment may be made of an elastic and plastic material such as silicone rubber. The specific implementation mode can be as follows: the housing 221 is made of a high-density soundproof material, and the inside of the housing 221 is solid, leaving a space according to the shape of the artificial auditory canal 222b, and then is wrapped with a material such as silicone.

The simulated auditory canal 222b is arranged to simulate the physiological structure of the external auditory canal of the real ear of a human body as much as possible, so as to obtain detailed information better, and meanwhile, since the simulated auditory canal 222b is arranged at the front end of the microphone 222a, external sound is transmitted from the sound inlet hole 221a and then passes through the simulated auditory canal 222b and then reaches the microphone 222 a. Therefore, the sound signals finally heard by the hearing-impaired people wearing the hearing-aid equipment have more complete detail information as the sound signals directly transmitted from the real ears.

The sound input module 22 of this embodiment may also include one or more of a bluetooth input module 22B, an audio reservoir input module 22C, or a USB sound card input module 22D. The Bluetooth input module 22B can be used for realizing the butt joint with the mobile phone APP, and data such as audio in the mobile phone can be conveniently input in a Bluetooth transmission mode. From this, can select different modes to carry out the input of sound according to actual demand, application scope is wide, and the practicality is strong.

The left channel output module 25A of the present embodiment includes a left channel filter 251 and a left channel amplifier 252, the left channel filter 251 is electrically connected to the left channel DSP24A, and the left channel amplifier 252 is electrically connected to the left channel filter 251. The right channel output module 25B includes a right channel filter 253 and a right channel amplifier 254, the right channel filter 253 is electrically connected to the right channel DSP24B, and the right channel amplifier 254 is electrically connected to the right channel filter 253. The left channel amplifier 252 and the right channel amplifier 254 are both connected to the headphone 1. Thus, the filter is used to filter and select the sound signal processed by the DSP chip 24, and the amplifier is used to amplify the sound signal.

An acoustic signal input end of the microphone 222a is connected to the sound inlet 221a, and an electrical signal output end is connected to the DSP chip 24 through the connector 223 and the adapter 224 in sequence. The housing 221 is formed with an earphone 1 insertion hole, and the earphone 1 is electrically connected to the controller 23 through the insertion hole and a wire.

The microphone array component 222 collects external sound signals through the sound inlet holes 221a on the shell 221 and converts the external sound signals into electric signals;

the DSP chip 24 is used to process the signals transmitted by the microphone array component 222; the DSP chip 24 of the present embodiment is a PCM4204 chip of TI corporation. Can be mounted on a circuit board such as a PCB board through integration.

The controller 23 is used to control the DSP chip 24 to perform directivity switching, mode switching, and the like of the microphone 222 a. The controller 23 of the present embodiment is an MCU (micro controller Unit).

The main unit 2 of the present embodiment further includes a housing, and the sound input module 22, the controller 23, the DSP chip 24, and the sound output module 25 are all mounted in the housing, and the housing covers the outer periphery of the adaptor 224. Specifically, a groove matching with the adaptor 224 may be formed on the housing, and the adaptor 224 is mounted to the housing through the groove. Therefore, the housing of the present invention can completely cover the components, and only the outer shell of the microphone array input module 22A is exposed. The shape of the shell of the host 2 can be similar to that of the MP3, and the appearance is beautiful and elegant.

In this embodiment, the controller 23, the DSP chip 24, the filter, the amplifier, and other components may be integrated on a circuit board, and then the circuit board is installed in the housing and located at the bottom of the adaptor 224, an interface connected to the connector 223 is disposed at the bottom of the installation groove 224a, and the connector 223 is electrically connected to the DSP chip 24 on the circuit board through the interface.

The host 2 of the present embodiment further includes an indicator light module 28, and the indicator light module 28 is disposed in the housing 21 and connected to the controller 23. Thus, the indicator light is used to indicate the use status of the main unit 2, such as: when the indicator light blinks, it indicates that it is working.

The main unit 2 of the present embodiment further includes a power supply module 26, and the power supply module 26 is connected to the controller 23, the indicator light module 28, and the like, and supplies power to each component.

The host 2 of the present embodiment further includes a key module 27 and a display screen. The display screen and the key module 27 are disposed on the housing and connected to the controller 23, the display screen may be disposed on the front surface of the housing 21, and the key module 27 may be disposed at the bottom of the housing 21. Therefore, the key module 27 is convenient for a user to operate, and realizes mode switching, such as controlling the switch of the acquisition device or controlling the micro motor; the display screen is used for displaying the state, information and the like of the device.

The hearing aid device can electrically and manually adjust the pointing direction of the microphone 222a, improve the identification capability of the microphone 222a in the designated direction and reduce the limitation of the fixed microphone 222 a.

When the present microphone array input module 22A is used in combination with a box-type hearing aid (i.e., forming the main unit 2), it is possible to shield or block sounds on the rear side of the body with the body and adjust the microphone 222A to be directed toward the front of the body, so that it is possible to improve the communication between the user and the person facing the body and reduce the interference of the sounds on the rear side. On the other hand, since the ear-hang type hearing aid or the ear canal type hearing aid cannot use the body as a sound barrier and cannot adjust the orientation of the microphone 222a, the hearing aid is not always an expensive short plate of the hearing aid in a noisy environment or an environment with many people. The box-type hearing aid utilizes the microphone array input module 22A, not only solves the problem of short board of the current hearing aid, but also can be popularized and used due to the low price (only one tenth of the price of the current hearing aid) and convenient use of the box-type hearing aid, fashionable appearance design and matching with the fashion earphone product, thereby improving the hearing protection and recovery popularization rate and reducing the incidence rate of hearing loss and hearing disability.

The multichannel hearing aid device effectively utilizes the advantage of large internal space of a box-type hearing aid, overcomes the defects of various hearing aid sound acquisition and DSP systems, arranges left and right channels in a DSP chip 24, independently acquires sound by using a microphone array input module 22A, independently transmits the sound to a left channel DSP24B and a right channel DSP24B for processing, and finally independently outputs the sound by a left sound channel output module 25A and a right sound channel output module 25B. The multi-channel hearing aid device effectively simulates the sound collection form of the left ear and the right ear of a human body, and greatly improves the listening effect in a noise environment. Meanwhile, the hearing aid is low in cost, and the product can help people in need to save 90% of expenditure, is hopeful to replace an imported hearing aid product, enables people in need to use more economical products, and solves the problems of hearing, hearing protection and the like.

Example 2

Fig. 4 schematically shows another embodiment of a multichannel hearing device.

As shown in fig. 4, the multichannel hearing aid device in this embodiment has substantially the same structure as that in embodiment 1, except that: the connection mode between the host 2 and the headset 1 in this embodiment is bluetooth connection.

As shown in fig. 4, the sound output module 25 of the present embodiment further includes a bluetooth transmitting module 25C, the left channel amplifier 252 and the right channel amplifier 254 are both connected to the bluetooth transmitting module 25C, a bluetooth receiving module 11 is disposed in the earphone 1, and the bluetooth receiving module 11 is in communication connection with the bluetooth transmitting module 25C. The bluetooth receiving module 11 and the bluetooth transmitting module 25C of the present embodiment are commonly-used commercially-available products; the bluetooth transmitting module 25C may be integrated on the same circuit board together with the controller 23, and the bluetooth receiving module 11 may be integrated on the control circuit board of the headset 1. The host 2 and the earphone 1 are connected through Bluetooth, can be used in a separated and matched mode, and are convenient to operate.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. Multichannel hearing aid device, including earphone (1) and host computer (2), earphone (1) is connected with host computer (2), its characterized in that, host computer (2) includes sound input module (22), controller (23), DSP chip (24) and sound output module (25), DSP chip (24) includes left passageway DSP (24A) and right passageway DSP (24B), sound output module (25) includes left sound channel output module (25A) and right sound channel output module (25B), sound input module (22) includes microphone array input module (22A), microphone array input module (22A) is connected with left passageway DSP (24A) and right passageway DSP (24B) respectively, left passageway DSP (24A) is connected with left sound channel output module (25A), passageway DSP is connected with right sound channel output module (25B), the left sound channel output module (25A) and the right sound channel output module (25B) are connected with the earphone (1).

2. The multichannel hearing aid device according to claim 1, wherein the microphone array input module (22A) comprises a housing (221) and a microphone array assembly (222) installed in the housing (221), the microphone array assembly (222) is installed in the housing (221), the microphone array assembly (222) comprises at least two microphones (222A), the housing (221) is provided with sound inlet holes (221a) corresponding to the microphones (222A), and the sound inlet holes (221a) are connected with the microphones (222A).

3. The multichannel hearing aid device as claimed in claim 2, wherein the microphone array input module (22A) further comprises a connector (223) and an adaptor (224), the housing (221) is connected to the connector (223), the signal line of each microphone (222A) is connected to the connector (223), the adaptor (224) is provided with a mounting groove (224a), the connector (223) is matched with the mounting groove (224a), and the connector (223) is connected to the DSP chip (24) through the adaptor (224).

4. The multichannel hearing device as recited in claim 3, wherein the microphone array input module (22A) further comprises a rotary plate (225) and a driving member (226), the rotary plate (225) is fixedly mounted at the bottom of the adaptor (224), and the driving member (226) is in power connection with the rotary plate (225) and is used for driving the rotary plate (225) to rotate.

5. The multichannel hearing aid device as claimed in claim 3, wherein the microphone array input module (22A) further comprises a fastener (227), one end of the fastener (227) is fixedly mounted to the inner wall of the mounting groove (224a), and the other end is fitted with the outer wall of the connector (223).

6. The multichannel hearing device as claimed in claim 2, wherein the sound inlet holes (221a) are plural, the plural sound inlet holes (221a) are distributed in a central circumferential array of the housing (221), the microphone array assembly (222) comprises plural microphones (222a) and plural simulated ear canals (222b), the number of the microphones (222a) and the simulated ear canals (222b) is the same as that of the sound inlet holes (221a), the microphones (222a) are connected to the DSP chip (24), one end of the simulated ear canals (222b) is connected to the sound inlet holes (221a), and the other end is connected to the microphones (222 a).

7. The multichannel hearing aid device according to any one of claims 3 to 6, wherein the main unit (2) further comprises a housing, and the sound input module (22), the controller (23), the DSP chip (24) and the sound output module (25) are mounted in the housing, and the housing is wrapped around the adapter (224).

8. The multichannel hearing device according to any of claims 1 to 6, characterized in that the sound input module (22) can further comprise one or more of a Bluetooth input module (22B), an audio reservoir input module (22C) or a USB sound card input module (22D).

9. The multichannel hearing device according to any of claims 1 to 6, characterized in that the left channel output module (25A) comprises a left channel filter (251) and a left channel amplifier (252), the left channel filter (251) is connected to the left channel DSP (24A), the left channel amplifier (252) is connected to the left channel filter (251), the right channel output module (25B) comprises a right channel filter (253) and a right channel amplifier (254), the right channel filter (253) is connected to the right channel DSP (24B), the right channel amplifier (254) is connected to the right channel filter (253), and the left channel amplifier (252) and the right channel amplifier (254) are both connected to the headphone (1).

10. The multichannel hearing aid device according to claim 9, wherein the sound output module (25) further comprises a bluetooth transmission module (25C), the left channel amplifier (252) and the right channel amplifier (254) are both connected to the bluetooth transmission module (25C), a bluetooth receiving module (11) is disposed in the earphone (1), and the bluetooth receiving module (11) is in communication connection with the bluetooth transmission module (25C).