WO2019114531A1

WO2019114531A1 - Bluetooth chip having hearing aid function, bluetooth headset and wireless hearing aid system

Info

Publication number: WO2019114531A1
Application number: PCT/CN2018/117425
Authority: WO
Inventors: 吴双宸
Original assignee: 北京康易聆医疗科技有限公司
Priority date: 2017-12-11
Filing date: 2018-11-26
Publication date: 2019-06-20
Also published as: CN107864441B; CN107864441A

Abstract

The present invention relates to an electronic device. Disclosed are a Bluetooth chip having a hearing aid function, and a Bluetooth headset. The Bluetooth chip comprises a chip main body, an audio interface module being integrated in the chip main body, the audio interface module comprising an audio input unit and an audio output unit, the audio input unit being connected to a microphone, and the audio output unit being connected to a receiver, characterized in that the chip main body is further internally integrated with a hearing aid module connected to the audio interface module, the hearing aid module receiving an audio signal inputted by the audio input unit, performing hearing aid processing, and then returning same to the audio output unit. The present invention solves the drawbacks in the prior art that a Bluetooth chip and a hearing-aid chip of a Bluetooth hearing-aid headset need to work independently or to work by means of an app on a mobile phone.

Description

Bluetooth chip with hearing aid function, bluetooth earphone and wireless hearing aid system

Technical field

The invention belongs to an electronic device and an electronic system, and particularly relates to a Bluetooth chip with a hearing aid function, a Bluetooth earphone including the same, and a wireless hearing aid system.

Background technique

Bluetooth headset is a relatively common electronic product in daily life. It can establish a Bluetooth wireless connection with a Bluetooth-enabled mobile phone, so that people can answer and make calls, or listen to music played on the mobile phone. You can also connect a Bluetooth-enabled computer, TV, and other products to listen to music or video. The Bluetooth headset is mainly composed of a Bluetooth chip plus an RF antenna, a microphone, a receiver, function buttons and a casing.

Hearing aids are electronic products commonly used by hearing-impaired people. They can specifically process sound signals according to the user's hearing conditions, allowing users to hear sounds that they could not hear or hear. Modern hearing aids are mainly composed of a hearing aid chip plus a microphone, a receiver, function buttons and a casing.

The Bluetooth hearing aids combine the dual functions of Bluetooth headsets and hearing aids. Currently, there are two types of Bluetooth hearing aids that are common on the market.

Mode 1: Using a combination of two functional chips, while using a Bluetooth chip (with call and / or music function) as the main chip, it is also necessary to add a hearing aid chip to achieve the hearing aid function. In order to enable the Bluetooth chip and the hearing aid chip to work on one circuit board, additional auxiliary circuits need to be added to realize the different voltage requirements of the two chips, and the connection between the Bluetooth chip and the hearing aid chip is also added. The circuit implements the transmission of audio data and/or control data between the two chips.

However, the above mode 1 has the following problems:

The separately added hearing aid chip, additional auxiliary circuit and connecting circuit bring several problems to this solution: First, the circuit components used are more, the required circuit board is larger, and the product cost is increased; Second, the number is increased. The power consumption of the product requires a larger capacity battery to ensure the use time; third, the required housing volume of the earphone is increased.

Mode 2: A combination of mobile phones and headphones. There is no hearing aid function module in the headset of this solution, and the hearing aid function module is placed in the mobile phone. When using the hearing aid function, the audio signal needs to be sent from the earphone to the mobile phone through the Bluetooth connection, and the hearing aid related processing is performed in the mobile phone, and then processed and sent back to the earphone through the Bluetooth connection. A variant of this type of solution is the use of a microphone of a mobile phone to collect sound without the microphone of the earphone. However, the common feature of such schemes is that the audio signal during hearing aid needs to be transmitted by Bluetooth between the earphone and the mobile phone.

However, the above mode 2 has the following problems:

The hearing aid function must be realized by means of a mobile phone, and the earphones after leaving the earphone have no hearing aid function, so in the strict sense, the earphone is not a Bluetooth hearing aid earphone. In addition, this kind of scheme still has serious delay problems, which are very different between different earphones and mobile phones, often hundreds of milliseconds, which may make the hearing aid function impractical; in addition, because of the audio processing of various mobile phone bottom layers Differently, after the hearing aid processing of the audio signal, the scheme may be processed by the underlying audio unit of the mobile phone, so the actual hearing aid effect of the scheme cannot be guaranteed.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the drawbacks of the prior art Bluetooth hearing aid headphones that require the Bluetooth chip and the hearing aid chip to work separately or with the mobile APP.

In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

A Bluetooth chip with a hearing aid function, a Bluetooth chip with a hearing aid function, comprising a chip body, an audio interface module integrated in the chip body, the audio interface module comprising an audio input unit and an audio output unit The audio input unit is connected to the microphone, and the audio output unit is connected to the receiver. The chip body is further integrated with a hearing aid module connected to the audio interface module, and the hearing aid module receives the audio signal input by the audio input unit for hearing aid processing. Then return to the audio output unit.

Further, a Bluetooth module, a call module, a music module, and a central control module are further integrated in the chip body, wherein

The call module is respectively connected to the Bluetooth module and the audio interface module, and the call module receives the digital audio signal sent by the audio input unit for processing, and then sends the digital audio signal to the Bluetooth module, where the call module further sends a digital audio signal to the Bluetooth module. After processing, send to the audio output unit;

The music module is respectively connected to the Bluetooth module and the audio interface module, and the music module receives the digital music signal sent from the Bluetooth module for processing, and then sends the signal to the audio output unit;

The Bluetooth module is respectively connected to the call module and the music module, and the Bluetooth module receives the digital audio signal sent from the call module to the external terminal through the Bluetooth antenna, and receives the audio signal sent from the external terminal through the Bluetooth antenna. Sending to the call module to implement the call function; on the other hand, the Bluetooth module further receives the digital music signal sent by the external terminal and sends the music signal to the music module;

The central control module is respectively connected to the call module, the music module and the hearing aid module through a control line to select and control one of the three modules to be in an idle state.

Further, the hearing aid module includes: a dynamic range adjustment unit, a spectrum compensation unit, a noise reduction unit, and a feedback suppression unit, where

The dynamic range adjusting unit converts a dynamic range of sounds that can be heard by a normal person into a dynamic range of sounds that can be heard by the hearing aid user;

The spectrum compensation unit performs frequency compensation on the degree of hearing loss of the hearing aid user at different frequencies;

The noise reduction unit suppresses noise in the audio signal;

The audio signal processed by the dynamic range adjusting unit, the spectrum compensating unit and the noise reducing unit is sent to the audio output unit;

The feedback suppression unit performs a howling suppression process on the audio signal processed by the dynamic range adjustment unit, the spectrum compensation unit, and the noise reduction unit, and performs subtraction with the audio signal input by the audio input unit, and then sends the audio signal to the One of the dynamic range adjustment unit, the spectrum compensation unit, and the noise reduction unit is processed first.

Further, the Bluetooth module is further connected to the dynamic range adjusting unit, the spectrum compensating unit, the noise reducing unit and the feedback suppressing unit through a control signal line, and the Bluetooth module receives an operation instruction of the external terminal to the dynamic range adjusting unit. The internal parameters of the spectrum compensation unit, the noise reduction unit, and the feedback suppression unit are modified and adjusted. The Bluetooth module also transmits the modified data of each unit in the hearing aid module to the external terminal for review.

Further, a spectrum compensation unit is further disposed in the call module, and the audio output unit is connected to perform frequency compensation on an audio signal during a user call.

Further, a music spectrum compensation unit is further disposed in the music module, and is connected to the audio output unit for performing frequency compensation on an audio signal in a process of listening to music by a user.

Further, the connection order between the dynamic range adjustment unit, the spectrum compensation unit, and the noise reduction unit is adjustable.

Further, a storage module is further connected to the hearing aid module, the call module and the music module to store historical data of the hearing aid module, the call module and the music module, and for re-calling them.

According to a second aspect of the present invention, there is also provided a Bluetooth headset having a housing incorporating the Bluetooth chip of any of the above aspects.

According to a third aspect of the present invention, a wireless hearing aid system is provided, the hearing aid system comprising the Bluetooth headset described in the foregoing solution, and a mobile terminal performing data interaction with the Bluetooth headset, the mobile terminal and the mobile terminal The Bluetooth chip in the Bluetooth headset performs data interaction to realize functions such as call, music, and hearing aid.

Compared with the prior art, the Bluetooth chip, the Bluetooth earphone and the wireless hearing aid system with the hearing aid function disclosed by the invention achieve the following technical effects:

(1) The present invention solves the problem that the Bluetooth chip does not have a hearing aid function by adding a hearing aid module to the Bluetooth chip. The specific processing units used in the hearing aid module, namely the dynamic range adjustment unit, the spectrum compensation unit, the noise reduction unit and the feedback suppression unit, etc., provide users with professional hearing aid functions.

(2) The present invention solves various problems existing in the combination of the two functional chip by integrating the hearing aid function into the Bluetooth chip, and no need to separately add the hearing aid chip, and no additional auxiliary circuit and connection circuit are needed, It is necessary to increase the battery capacity, thereby reducing the number of circuit components, reducing the cost of the product, and making the volume of the product smaller.

(3) By introducing a frequency compensation unit in the call module, the problem that the ordinary Bluetooth headset cannot compensate according to the user's hearing loss is solved, so that the user can clearly and comfortably hear the other party's voice.

(4) By introducing a frequency compensation unit in the music module, the problem that the ordinary Bluetooth earphone cannot be compensated according to the hearing loss of the user is solved, so that the user can experience the music feeling when approaching normal hearing.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the specific embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

FIG. 1 is a schematic structural diagram of a Bluetooth chip with a hearing aid function according to an embodiment of the present invention.

2 is a diagram showing transmission of control data between units in a Bluetooth module and a hearing aid module according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of connection between each functional unit and an audio interface module in a hearing aid module according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of an internal circuit of a hearing aid module according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The invention will be further described below in conjunction with the drawings and embodiments.

Referring to FIG. 1 , a Bluetooth chip with a hearing aid function disclosed in the embodiment of the present invention has a chip body, and a plurality of module circuits are integrated on the chip body. In this embodiment, the chip body is The utility model comprises an audio interface module, a bluetooth module, a call module, a music module, a storage module and a central control module, and further comprises a hearing aid module, wherein the hearing aid module and the other modules are integrated together in the same Bluetooth chip.

From the perspective of providing Bluetooth hearing aid function, the biggest difference between the present invention and the prior art two functional chip combination schemes is that the earphone end does not use a separate hearing aid chip, but only one of the hearing aid modules is used. The Bluetooth chip is no longer two independent chips. It is essentially a Bluetooth chip that implements the dual functions of Bluetooth transmission and hearing aid. In addition, the difference between the present invention and the conventional mobile phone and earphone combination lies in the location of the hearing aid module. Differently, the hearing aid module of the present invention is in the Bluetooth chip of the earphone end, and the hearing aid module of the mobile phone and the earphone combination scheme is in the mobile phone.

From the perspective of implementing Bluetooth hearing aids, the biggest difference between this patent and the two functional chip combination schemes is that instead of using a separate hearing aid chip, the earphone end uses only a Bluetooth chip with a hearing aid module; In the combination of the mobile phone and the earphone, there is no hearing aid module in the earphone, and the hearing aid function is lost after leaving the mobile phone, so in the strict sense, the earphone in the combination of the mobile phone and the earphone is not the Bluetooth hearing aid earphone.

The above modules of the embodiments of the present invention are described in detail below.

The audio interface module is respectively connected to a call module, a music module and a hearing aid module, the audio interface module includes an audio input unit and an audio output unit, and the audio input unit is connected with a microphone (microphone), and the audio input unit The sound signal from the microphone is converted into an analog electrical signal, and then pre-processed (including noise reduction, filtering, amplification, etc.) and A/D conversion is converted from an analog audio electrical signal to a digital audio signal for other modules (call module and Hearing aid module) processing. A receiver (handset) is connected to the audio output unit, and the audio output unit is responsible for post-processing (including filtering, amplifying, etc.) processing of digital audio signals processed by other modules (call module, audio module, and hearing aid module). And the D/A conversion is converted from a digital audio signal to an analog audio electrical signal, and finally the analog audio signal is converted into a sound signal by the receiver.

Referring to FIG. 2, the hearing aid module is responsible for performing various processing on the audio signal from the audio input unit according to the specified hearing aid request, and then outputting the processed audio signal to the audio output unit to implement the hearing aid function. The module includes: a dynamic range adjustment unit, a spectrum compensation unit, a noise reduction unit, and a feedback suppression unit.

The dynamic range adjusting unit converts the dynamic range of the sound that can be heard by a normal person into the dynamic range of the sound that the user can hear, so that the user can hear the small sound that could not be heard before, and at the same time, when listening to loud sound, Feeling uncomfortable; the spectrum compensation unit will compensate the user for the degree of hearing loss at different frequencies, making it easier for the user to hear the signal of the corresponding frequency; the noise reduction unit will distinguish the noise and the voice signal, and will not damage the voice. The noise is suppressed under the premise, and the signal-to-noise ratio in the noise environment is improved, which helps the user to better perceive the voice information. The feedback suppression unit can suppress the common howling phenomenon under the hearing aid function and increase the usability of the hearing aid function. . Because the hearing aid module amplifies the sound, the played sound will be re-admitted by the microphone, forming a continuous loop amplification, causing the hearing aid to whistle. The feedback suppression unit generates a signal opposite to the external acoustic feedback signal inside the hearing aid module, and performs subtraction by the subtractor to cancel out the feedback signal in the microphone.

In this embodiment, the setting order of the dynamic range adjusting unit, the spectrum compensating unit, and the noise reducing unit may be arbitrarily changed, and is not limited to the connection relationship shown in FIG. 2 .

Referring to FIG. 3, different hearing aid parameters may be required according to different hearing aid users. In this embodiment, in order to adjust different parameters, four control signal lines are respectively set in the Bluetooth module, and the dynamic range adjusting unit is respectively connected. The spectrum compensation unit, the noise reduction unit and the feedback suppression unit, the user adjusts the hearing aid effect of the earphone on the mobile phone APP, and the mobile phone transmits the adjustment parameter to the bluetooth earphone through Bluetooth transmission, and the Bluetooth module in the earphone receives the adjustment instruction, and then these parameters are Send the corresponding unit in the hearing aid module, and then update the parameters inside to change the hearing aid effect of the earphone. Similarly, each unit in the above hearing aid module can also send the adjusted self parameter to the external mobile phone through the Bluetooth module for inspection and inspection.

Referring to FIG. 4, FIG. 4 is a circuit schematic diagram of a hearing aid module in a specific embodiment of the present invention. Among them, the spectrum compensation unit can use the M62431FP-EQ chip to realize the frequency compensation function. The noise reduction unit can use the AS3422-S chip to realize the noise reduction function. The dynamic range adjustment unit can use the DCAP-TDA7315 chip to adjust the normal sound pressure range. To the hearing aid's hearing range function, the feedback suppression unit can use the FM1188 chip to achieve the suppression of howling function. The DCAP-TDA7315 chip and the FM1188 chip respectively have pins connected to the audio output unit and the audio input unit, between the above chips. The circuit connection relationship can be shown in the figure, so it will not be described in detail here.

The Bluetooth module is respectively connected to the hearing aid module, the call module and the music module, and the Bluetooth chip has a Bluetooth antenna connected to the Bluetooth module, and is responsible for establishing a Bluetooth connection between the Bluetooth module and an external terminal, such as a mobile phone and a computer, and performing Bluetooth. Data communication, realizing audio data and other control data being transmitted between the Bluetooth chip and a device with which a Bluetooth connection has been established; the audio data received by the Bluetooth module is sent to a call module or a music module for making a call or a music play Function, or send the received control data to the hearing aid module, the call module or the music module to modify the internal parameters or other configurations of the above three modules. Specifically, the APP can be installed on an external terminal, such as a mobile phone. By operating on the APP, the operation instruction is transmitted through the Bluetooth module to implement parameter correction of the internal module of the Bluetooth chip.

The call module is respectively connected to the Bluetooth module and the audio interface module, and the call module is responsible for corresponding processing of the audio signal during the call making process, and the call module includes two audio transmitting units that can work synchronously. And the audio receiving unit simultaneously performs an audio transmitting process and an audio receiving process. The audio transmitting unit processes the digital audio signal from the audio input unit (including call-specific audio encoding, noise reduction, echo cancellation, etc.), and then outputs the same to the Bluetooth module, and then sends the wireless signal by the Bluetooth module. Give a device that has a Bluetooth connection to it, such as a cell phone. The audio receiving unit receives the digital audio signal transmitted from the mobile phone by the Bluetooth module, and outputs it to the audio output unit after processing (including call-dedicated audio decoding, filtering, etc.). In this way, real-time conversation between two mobile terminals is achieved.

As a preferred embodiment of the present invention, the call module further includes a spectrum compensation unit, and the spectrum compensation unit is respectively connected to the audio output unit for frequency compensation of the digital audio signal received during the call, and is changed to the user. The hearing compensation compensates, so that the user can hear the other party's voice clearly and comfortably, and solves the problem that the user has different degrees of hearing loss at different frequencies, so that the user can clearly and comfortably hear the other party's voice.

The music module is respectively connected to the audio interface module and the Bluetooth module, and the music module is mainly used for listening to a music process, which receives a digital audio signal sent from the slave Bluetooth module, and performs corresponding processing on the digital audio signal, for example, After decoding, it is sent to the audio output unit in the audio interface module, and then the digital signal is D/A converted by the audio output unit and sent to the receiver, so that the human ear can hear the music.

As a preferred embodiment of the present invention, a spectrum compensation unit is also built in the music module, and the audio output unit is connected to compensate the user's hearing, so that the user can experience the music experience when approaching normal hearing.

The spectrum compensation unit can be implemented by using a frequency compensation circuit commonly used in the prior art. Therefore, the specific circuit structure of the spectrum compensation unit is not specifically described in this embodiment.

In this embodiment, each frequency point or frequency band in the spectrum compensation unit in the call module and the Bluetooth module is controlled and regulated by an external terminal. Specifically, the Bluetooth module connects the instruction on the mobile APP by connecting the Bluetooth through the mobile APP. The relevant parameters in the spectrum compensation unit are modified. For users with different hearing losses, the frequency bands or frequency points set by the spectrum compensation unit are different.

The storage module is respectively connected to the hearing aid module, the call module and the music module to store historical data of the hearing aid module, the call module and the music module, and for re-calling them. The user-specified hearing aid data can be received by the Bluetooth module, and then the data is saved to the storage module while updating the processing unit parameters in each functional module, so that the user can directly read from the storage module the next time the headset is used. Saved parameters without having to reset them.

The central control module is respectively connected to the call module, the music module and the hearing aid module through a control line to select and control one of the three modules to be in an idle state. The central control module can make the circuit in a certain module be in a conductive state by means of a button, thereby controlling the module to work normally. In addition, the central control module can also control the Bluetooth module to be turned off in the hearing aid mode. Specifically, the central control module can switch four working modes, which are, by priority, from high to low: call, music, hearing aid, idle. For example, when a call comes in, the control module switches the headset to the call mode regardless of the current mode of the headset. When the call ends, the headset is returned to the mode before the call. For another example, if the earphone is currently in the hearing aid mode and the user plays music, the control module will switch the earphone to the music mode, and when the music ends, control the earphone to return to the hearing aid mode. In addition, the control module can also control the switches of other modules. For example, in the hearing aid mode, in order to reduce power consumption, the control module can turn off the Bluetooth module.

In a second embodiment of the present invention, a Bluetooth headset is further provided, the Bluetooth headset has a housing, the housing has the Bluetooth chip in the above embodiment, and the Bluetooth headset further includes a microphone. And the receiver is connected to the audio interface module, wherein the microphone converts the sound into an electrical signal and sends the signal to the audio input unit, and the receiver converts the audio signal output from the audio output unit into a sound signal.

In a third embodiment of the present invention, a wireless hearing aid system is further provided, the hearing aid system comprising the Bluetooth headset described in the foregoing solution, and a mobile terminal performing data interaction with the Bluetooth headset, the mobile terminal Perform data interaction with the Bluetooth chip in the Bluetooth headset to implement functions such as call, music, hearing aid, etc., and implement parameter adjustment of the above module through the Bluetooth module.

Compared with the prior art, the present invention solves the problem that the Bluetooth chip does not have a hearing aid function by adding a hearing aid module to the Bluetooth chip. The specific processing units used in the hearing aid module, namely the dynamic range adjustment unit, the spectrum compensation unit, the noise reduction unit and the feedback suppression unit, etc., provide users with professional hearing aid functions. By integrating the hearing aid function into the Bluetooth chip, the various problems of the two functional chip combination schemes are solved, and it is no longer necessary to separately add the hearing aid chip, no additional auxiliary circuit and connection circuit are needed, and no need to increase the battery capacity. Therefore, the number of circuit components is reduced, the product cost is reduced, and the volume of the product can be made smaller. By introducing a frequency compensation unit in the call module, the problem that the ordinary Bluetooth headset cannot be compensated according to the user's hearing loss is solved, so that the user can clearly and comfortably hear the other party's voice. By introducing a frequency compensation unit in the music module, the problem that the ordinary Bluetooth earphone cannot be compensated according to the user's hearing loss situation is solved, so that the user can experience the music feeling when approaching normal hearing.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Claims

A Bluetooth chip with a hearing aid function includes a chip body, and an audio interface module is integrated in the chip body, the audio interface module includes an audio input unit and an audio output unit, and the audio input unit is connected to a microphone, and the audio output is The unit is connected to the receiver, wherein the chip body further integrates a hearing aid module connected to the audio interface module, and the hearing aid module receives the audio signal input by the audio input unit for hearing aid processing and then returns to the audio output. unit.
The Bluetooth chip with the hearing aid function according to claim 1, wherein the chip body further comprises a Bluetooth module, a call module, a music module and a central control module, wherein

The call module is respectively connected to the Bluetooth module and the audio interface module, and the call module receives the digital audio signal sent by the audio input unit for processing, and then sends the digital audio signal to the Bluetooth module, where the call module further sends a digital audio signal to the Bluetooth module. After processing, send to the audio output unit;

The music module is respectively connected to the Bluetooth module and the audio interface module, and the music module receives the digital music signal sent from the Bluetooth module for processing, and then sends the signal to the audio output unit;

The Bluetooth module is respectively connected to the call module and the music module, and the Bluetooth module receives the digital audio signal sent from the call module to the external terminal through the Bluetooth antenna, and receives the audio signal sent from the external terminal through the Bluetooth antenna. Sending to the call module to implement the call function; on the other hand, the Bluetooth module further receives the digital music signal sent by the external terminal and sends the music signal to the music module;

The central control module is respectively connected to the call module, the music module and the hearing aid module through a control line to select and control one of the three modules to be in an idle state.
The Bluetooth chip with the hearing aid function according to claim 2, wherein the hearing aid module comprises: a dynamic range adjustment unit, a spectrum compensation unit, a noise reduction unit, and a feedback suppression unit, wherein

The dynamic range adjusting unit converts a dynamic range of sounds that can be heard by a normal person into a dynamic range of sounds that can be heard by the hearing aid user;

The spectrum compensation unit performs frequency compensation on the degree of hearing loss of the hearing aid user at different frequencies;

The noise reduction unit suppresses noise in the audio signal;

The audio signal processed by the dynamic range adjusting unit, the spectrum compensating unit and the noise reducing unit is sent to the audio output unit;

The feedback suppression unit performs a howling suppression process on the audio signal processed by the dynamic range adjustment unit, the spectrum compensation unit, and the noise reduction unit, and performs subtraction with the audio signal input by the audio input unit, and then sends the audio signal to the One of the dynamic range adjustment unit, the spectrum compensation unit, and the noise reduction unit is processed first.
The Bluetooth chip with the hearing aid function according to claim 3, wherein the Bluetooth module is further connected to the dynamic range adjusting unit, the spectrum compensating unit, the noise reducing unit and the feedback suppressing unit through control signal lines, respectively. Modifying and adjusting internal parameters of the dynamic range adjusting unit, the spectrum compensating unit, the noise reducing unit, and the feedback suppressing unit by receiving an operation instruction of the external terminal; the Bluetooth module further includes each of the hearing aid modules The modified data of the unit is transmitted back to the external terminal for review.
The Bluetooth chip with the hearing aid function according to any one of claims 2 to 4, wherein a spectrum compensation unit is further disposed in the call module, and the audio output unit is connected to the user during a call. The audio signal is frequency compensated.
The Bluetooth chip with the hearing aid function according to any one of claims 2 to 5, wherein a music spectrum compensation unit is further disposed in the music module, and the audio output unit is connected to listen to the music process for the user. The audio signal in the frequency is compensated for.
The Bluetooth chip with the hearing aid function according to claim 4, wherein the connection order between the dynamic range adjusting unit, the spectrum compensation unit and the noise reduction unit is adjustable.
The Bluetooth chip with the hearing aid function according to claim 3 or 4, further comprising a storage module, respectively connected to the hearing aid module, the call module and the music module, to store the hearing aid module, the call module and the music The historical data of the module and for them to be recalled.
A Bluetooth headset, characterized in that the Bluetooth headset has a housing in which the Bluetooth chip of any of claims 1-8 is embedded.
A wireless hearing aid system, characterized in that the hearing aid system comprises the Bluetooth headset of any of the preceding claims 1-9, and a mobile terminal for data interaction with the Bluetooth headset.