WO2017181386A1

WO2017181386A1 - Mobile terminal-based hearing aid device

Info

Publication number: WO2017181386A1
Application number: PCT/CN2016/079886
Authority: WO
Inventors: 杨枭; 李芳庆; 任艳辉
Original assignee: 华为技术有限公司
Priority date: 2016-04-21
Filing date: 2016-04-21
Publication date: 2017-10-26
Also published as: CN107529353A; CN107529353B

Abstract

Disclosed is a mobile terminal-based hearing aid device, comprising a first channel and a second channel. The first channel comprises an application processor (AP), a digital signal processing integrated circuit (DSP IC), a switch, and a headphone power amplifier (HP PA) which are sequentially connected. An input end of the DSP IC is connected to a microphone (MIC). The second channel comprises the AP, a coder-decoder (Codec), the switch, and the HP PA that are sequentially connected. The AP is used for controlling, by means of the DSP IC when a hearing aid function is enabled, the switch to be in communication with the DSP IC, and controlling the AP and the Codec to enter a power saving mode. The DSP IC is used for receiving an audio signal to be processed that is input by the MIC, processing the audio signal to be processed, and sending the processed audio signal to the HP PA by means of a double pole, double throw (DPDT) analog switch. The HP PA is used for amplifying the received audio signal. According to the present invention, the power consumption of a mobile terminal can be reduced, and the standby time of the mobile terminal can be prolonged.

Description

Hearing aid device based on mobile terminal

Technical field

The present invention relates to the field of mobile terminal technologies, and in particular, to a hearing aid device based on a mobile terminal.

Background technique

At present, there are many people with hearing impairment and hearing aids in China. However, less than 4% of Chinese elderly people use hearing aids. In view of the fact that mobile phones are now popular, in order to facilitate users to use hearing aids and improve user experience, mobile phones can be used. The hearing aids are combined into one, and a hearing aid is placed in the mobile phone.

The hearing aid of the existing mobile phone works on the principle that the sound around the user enters the codec through the microphone of the mobile phone, and then reaches the earphone amplifier through the analog loop or the digital loop in the codec to promote the sound of the earphone speaker.

However, when the codec of the mobile phone is used to implement the function of the hearing aid, the hearing aid needs to be opened for a long time, and the codec in the mobile phone also needs to run for a long time, which causes the power consumption of the mobile phone to rise sharply and shorten the standby time of the mobile phone.

Summary of the invention

The embodiments of the present invention provide a hearing aid device based on a mobile terminal. When the hearing aid function is implemented on the mobile terminal, the power consumption of the mobile terminal can be reduced, and the standby time of the mobile terminal can be prolonged.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a hearing aid device based on a mobile terminal, where the device includes: an application processor AP, a digital signal processing integrated circuit DSP IC, a microphone MIC, a switch, a codec Codec, and a headphone power amplifier. HP PA, the switch is used to switch between the first channel and the second channel;

The first channel includes the AP, the DSP IC, the switch, and the HP PA connected in sequence, wherein an input end of the DSP IC is connected to the MIC;

The second channel includes the AP, the Codec, the switch, and the HP PA connected in sequence;

The AP is configured to control, by the DSP IC, the switch to communicate with the DSP IC when the hearing aid function is turned on, and control the AP and the Codec to enter a power saving mode;

The DSP IC is configured to receive an audio signal to be processed input through the MIC, process the audio signal to be processed, and send the processed audio signal to the HP PA via the DPDT analog switch;

The HP PA is used to amplify the received audio signal.

The mobile terminal-based hearing aid device provided by the embodiment of the present invention implements the hearing aid function by using Codec in the mobile terminal in the prior art, and the long-term operation of the Codec causes the power consumption of the mobile terminal to rise sharply, thereby reducing the standby time of the mobile terminal. In the embodiment of the present invention, by setting the DSP IC and the switch in the mobile terminal, when the hearing aid function is enabled, the first channel is opened, and the AP and the Codec are set to the energy-saving mode, and the DSP IC dedicated to implementing the hearing aid function is treated. The processed audio signal is processed. Since the power consumption of the audio signal processed by the DSP IC is much lower than the power consumption of the Codec runtime, the power consumption of the mobile terminal can be reduced, and the standby time of the mobile terminal can be prolonged.

In combination with the first aspect, it should be noted that the MIC is a digital MIC, and the DSP IC includes a digital signal processor DSP, a digital-to-analog converter DAC, and a left channel interface and a right channel interface. The left channel interface and the right channel interface are connected to the switch;

The DSP is configured to receive a digital audio signal sent by the digital MIC, process the digital audio signal, and send the processed digital audio signal to the DAC;

The DAC is configured to receive the processed digital audio signal sent by the DSP, convert the processed digital audio signal into an analog digital signal, and pass the analog digital signal through the left channel interface and the The right channel interface is sent to the HP PA via the switch.

In combination with the first aspect, it should also be noted that the MIC is an analog MIC, and the DSP IC includes an analog-to-digital converter ADC, a digital signal processor DSP, a digital-to-analog converter DAC, and a left channel interface and a right channel interface. The DSP IC is connected to the switch through the left channel interface and the right channel interface;

The ADC is configured to receive an analog audio signal of the analog MIC input, convert the analog audio signal into a digital audio signal, and send the digital audio signal to the DSP;

The DSP, configured to receive the digital audio signal sent by the ADC, for the digital The audio signal is processed, and the processed digital audio signal is sent to the DAC;

On the basis of the first aspect, the switch is a double-pole double-throw DPDT analog switch, and the AP and the DSP IC are connected through a two-wire serial bus I2C interface, and the DSP IC further includes a control pin;

The I2C interface is configured to transmit a control instruction sent by the AP to the DSP IC, and transmit a control result that is sent back by the DSP IC to the AP;

The control pin is connected to the DPDT analog switch, and is configured to control a connection state of the DPDT analog switch according to a control instruction sent by the AP to the DSP IC, when a control function of the mobile terminal is enabled. The DSP IC sets a level of the control pin to a first level according to a control instruction sent by the AP, and the DPDT analog switch is in communication with the left channel interface and the right channel interface; When the control function of the mobile terminal is turned off, the DSP IC sets the level of the control pin to a second level according to a control instruction sent by the AP, and the DPDT analog switch is in communication with the Codec.

For the mobile terminal-based hearing aid device provided by the embodiment of the present invention, the DSP IC and the switch implement the hearing aid function on the mobile terminal. Since the DSP IC is based on the low power DSP design, the DSP IC is used in the low power consumption DSP. The power consumption during normal operation is extremely low, so even if the hearing aid function of the mobile terminal is turned on for a long time, the influence on the standby time length of the mobile terminal is relatively small, so that the power consumption of the mobile terminal is reduced compared with the prior art, and the power consumption is extended. Standby time of the mobile terminal.

With reference to the first aspect, it should be noted that the DSP IC and the AP and the Codec are connected through a low-power inter-chip serial media bus SlimBus interface or an integrated circuit built-in audio I2S interface;

The SlimBus interface or the I2S interface is configured to transmit audio data between the DSP IC and the AP, and transmit audio data between the DSP IC and the Codec.

For the embodiment of the present invention, since the DSP IC and the AP and the Codec have an interface for transmitting audio data, the DSP IC can still use the MIC when turning off the hearing aid function of the mobile terminal. The input signal is transmitted to the AP and Codec, which ensures that the mobile terminal can be used both as a hearing aid and a normal voice call function.

Based on the first aspect, the DSP IC further includes an interrupt output port;

The DSP IC is configured to send an interrupt message to the AP by using the interrupt output port, where the interrupt message is used to request communication to the AP.

In conjunction with the first aspect, it is also noted that the DSP IC is further configured to provide a clock of the digital MIC to the digital MIC.

On the basis of the first aspect, the output end of the HP PA is connected to the earphone interface, and the HP PA amplifies the received audio signal, and then transmits the earphone interface to the earphone connected to the earphone interface; or,

The HP PA amplifies the received audio signal and transmits it to an audio playback device that is wirelessly connected to the mobile terminal.

The mobile terminal-based hearing aid device provided by the embodiment of the invention integrates the function of the hearing aid into the mobile terminal, and the user can use the function of the hearing aid only when wearing the mobile terminal, so that the user can carry the mobile terminal and the hearing aid at the same time. Both devices, without the need to carry a charger for both devices, provide convenience for hearing aid users.

In a second aspect, an embodiment of the present invention provides a mobile terminal, including: a mobile terminal-based hearing aid device as described in the first aspect.

The mobile terminal provided by the embodiment of the present invention implements the hearing aid function by using the Codec in the mobile terminal in the prior art, and the long-term operation of the Codec causes the power consumption of the mobile terminal to rise sharply, and the standby time of the mobile terminal is reduced, and the implementation of the present invention is compared. In the example, by setting the DSP IC and the switch in the mobile terminal, when the hearing aid function is turned on, the first channel is turned on, and the AP and Codec are set to the energy-saving mode, and the audio signal to be processed by the DSP IC dedicated to implementing the hearing aid function is performed. Processing, because the power consumption of the DSP IC processing audio signal is much lower than the power consumption of the Codec runtime, the power consumption of the mobile terminal can be reduced, and the standby time of the mobile terminal can be prolonged.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below, obviously, The drawings in the following description are only some of the 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 diagram of a logical structure of a hearing aid device based on a mobile terminal according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a logical structure of another hearing aid device based on a mobile terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all 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.

In order to reduce the power consumption of the mobile terminal having the hearing aid function and increase the standby time of the mobile terminal, the embodiment of the present invention provides a hearing aid device based on the mobile terminal. As shown in FIG. 1 , the device includes: an Application Processor , application processor) 11, DSP IC (Digital Signal Processing Integrated Circuit) 12, MIC (microphone) 13, switch 14, Codec (codec) 15 and HP PA (Headphone Power Amplifier, Headphone power amplifier) 16;

The switch 1 is used to switch between the first channel and the second channel.

The first channel includes an AP11, a DSP IC 12, a switch 14 and an HP PA 16 connected in sequence, wherein an input of the DSP IC 12 is connected to the MIC 13, and the first channel is used to implement a hearing aid function in the mobile terminal.

The second channel includes AP11, Codec15, switch 14, and HP PA16 connected in sequence, and the second channel is used to implement common audio transmission functions of the mobile terminal, such as playing music, voice calls, and the like.

Among them, Codec15 is also connected to RCV (Receiver, receiver), Codec15 can also output audio signals through RCV.

AP11, used to control switch 14 and DSP through DSP IC12 when hearing aid function is enabled IC12 is connected and controls AP11 and Codec15 to enter energy-saving mode.

Among them, the energy-saving mode is different from the working mode. In the working mode, all functions in the AP11 and Codec15 are turned on, and the unused functions also generate power consumption, which causes the standby time of the mobile terminal to be shortened. The power-saving mode means that the functions of the AP11 and Codec15 that are not in use are temporarily turned off, and the clock frequency is greatly reduced, thereby achieving the purpose of power saving.

It can be understood that when the hearing aid function is turned on, the switch 14 is connected to the DSP IC 12, that is, the mobile phone realizes the hearing aid function in the mobile terminal through the second channel. At this time, the utilization rate of the AP11 and the Codec 15 is low, so the energy saving mode can be entered. Reduce the power consumption of mobile terminals.

The DSP IC 12 is configured to receive the to-be-processed audio signal input through the MIC 13, process the processed audio signal, and send the processed audio signal to the HP PA 16 via the switch 14.

After receiving the audio signal to be processed, the DSP IC 12 needs to run a signal processing algorithm for the hearing aid to complete the processing of the signal to be processed.

It should be noted that the MIC 13 can be the MIC of the mobile terminal. When the mobile terminal is used to implement the hearing aid function, the mobile terminal can be connected to the earphone, and the output signal of the HP PA16 is transmitted to the earphone to implement the hearing aid function. When the earphone is accessed in the mobile terminal, the MIC of the mobile terminal can still input an audio signal.

The HP PA16 is used to amplify the received audio signal.

In an implementation manner provided by the embodiment of the present invention, an output end of the HP PA is connected to the earphone interface, and after the HP PA16 amplifies the received audio signal, the amplified audio signal is transmitted to the earphone interface through the earphone interface. Headphones for hearing aid function.

Alternatively, the HP PA 16 amplifies the received audio signal and transmits the amplified audio signal to an audio playback device that is wirelessly connected to the mobile terminal, such as a Bluetooth headset.

The mobile terminal-based hearing aid device provided by the embodiment of the present invention implements the hearing aid function by using Codec in the mobile terminal in the prior art, and the long-term operation of the Codec causes the power consumption of the mobile terminal to rise sharply, thereby reducing the standby time of the mobile terminal. In the embodiment of the present invention, by setting the DSP IC and the switch in the mobile terminal, when the hearing aid function is enabled, the first channel is opened, and the AP and the Codec are set to the energy-saving mode, and the DSP IC dedicated to implementing the hearing aid function is treated. The processed audio signal is processed. Since the power consumption of the audio signal processed by the DSP IC is much lower than the power consumption of the Codec runtime, the power consumption of the mobile terminal can be reduced, and the mobile terminal can be extended. Machine time.

The following describes the communication process between the first channel and the second channel of the mobile terminal.

The first channel: When the AP11 turns on the hearing aid function, the AP11 controls the switch 14 to communicate with the DSP IC12 through the DSP IC12, and the first channel is turned on. The MIC 13 collects sound, generates an audio signal to be processed, inputs the audio signal to be processed to the DSP IC12, and the DSP IC12 processes the audio signal to be processed, and sends the processed audio signal to the HP PA16 via the switch 14, which is received by the HP PA16. The audio signal is amplified and output.

It should be noted that, in the case that the hearing aid function of the mobile terminal is in the on state, if the AP 11 detects that the mobile terminal performs a voice call, the hearing aid function is turned off, and the second channel is switched, and when the voice call is determined to be completed, the hearing aid is automatically turned on. Function, switch to the first channel.

The second channel: When the AP11 detects that the mobile terminal makes a voice call, the hearing aid function is turned off, and the AP11 controls the switch 14 to communicate with the Codec 15 through the DSP IC 12, and the second channel is turned on. The AP11 controls the DSP IC12 to enable the pass-through mode. That is, the DSP IC12 does not perform any processing after receiving the to-be-processed audio signal input by the MIC13, and directly sends the to-be-processed audio signal to the AP11 and Codec15, and the normal call function is completed by the AP11 and the Codec15. The audio signal of the opposite end of the call is sent by Codec 15 to HP PA16 via switch 14, and then output by HP PA16. In addition, when the hearing aid function is off, the DSP IC12 will be in the sleep mode when no voice input is required. When the voice input is required, the DSP IC12 switches to the through mode, and the signal received from the MIC is directly sent to the AP11. And / or Codec15.

With the mobile terminal-based hearing aid device shown in FIG. 1 , in another implementation manner provided by the embodiment of the present invention, the components and connection relationships of the modules in the device are based on the device shown in FIG. 1 . Detailed description, as shown in Figure 2, MIC13 is digital MIC131 or analog MIC132, DSP IC12 includes analog-to-digital converter ADC121, digital signal processor DSP122, digital-to-analog converter DAC123 and left channel interface (Hearing Aid-L) The right channel interface (Hearing Aid-R), wherein the DSP IC 12 is connected to the switch 14 through the left channel interface and the right channel interface.

It should be noted that the MIC 13 is an audio receiving device of the mobile terminal, and may be a digital MIC 131 or an analog MIC 132. Figure 2 shows both the digital MIC 131 and the analog MIC 132, in fact the MIC 13 in the mobile terminal is the digital MIC 131 and the analog MIC 132 In the middle, there is no digital MIC131 and analog MIC132 working at the same time, so when the MIC13 is the digital MIC131, the DSP 122 directly receives the digital audio signal sent by the digital MIC131, and when the MIC13 is the analog MIC131, the DSP 122 receives the digital audio signal sent by the ADC 121.

In an implementation manner of the embodiment of the present invention, when the MIC 13 of the mobile terminal is specifically a digital MIC 131, the ADC 121 may not be disposed in the DSP IC 12.

The clock of the digital MIC131 is provided by the DSP IC12, and is specifically provided by the DSP 122 in the DSP IC12.

The DSP 122 is configured to receive the digital audio signal sent by the digital MIC 131, process the digital audio signal, and send the processed digital audio signal to the DAC 123.

It should be noted that the DSP 122 is a low-power DSP core in the DSP IC12, and can execute a signal processing algorithm for implementing a hearing aid function.

DSP IC12 is based on the low-power DSP122 design, which consumes very low power during normal operation. The power consumption can be less than 5mW, so even if the hearing aid function of the mobile terminal is turned on for a long time, the impact on the standby time length of the mobile terminal is small.

The DAC 123 is configured to receive the processed digital audio signal sent by the DSP 122, convert the processed digital audio signal into an analog digital signal, and send the analog digital signal to the HP via the left channel interface and the right channel interface via the switch 14. PA16.

The left channel interface and the right channel interface are two output ports of the DAC 123, and are connected to the output port of the switch 14 as a set of inputs of the switch 14.

In another implementation manner of the embodiment of the present invention, when the MIC 13 of the mobile terminal is an analog MIC 132, the ADC 121 is configured to receive an analog audio signal input by the analog MIC 132, convert the analog audio signal into a digital audio signal, and convert the digital audio. The signal is sent to the DSP 122.

The DSP 122 is configured to receive the digital audio signal sent by the ADC 121, process the digital audio signal, and send the processed digital audio signal to the DAC 123.

The above is a description of the composition of the DSP IC 12 and the function of each module. In addition, the embodiment of the present invention will refer to the connection relationship of various parts in the hearing aid device based on the mobile terminal with reference to FIG. 2 . Bright.

The AP 11 and the DSP IC 12 are connected through an I2C (Inter-Integrated Circuit) interface, and the DSP IC 12 further includes a control pin. In addition, the switch 14 in the embodiment of the present invention may be a DPDT (Double). Pole Double Throw, double pole double throw) analog switch.

The I2C interface is used for transmitting the control command sent by the AP11 to the DSP IC12, and transmitting the control result fed back by the DSP IC12 to the AP11.

The control pin is connected to the DPDT analog switch for controlling the connection state of the DPDT analog switch 14 according to the control command sent by the AP11 to the DSP IC12. When the control function of the mobile terminal is turned on, the DSP IC12 controls according to the control command sent by the AP11. The level of the pin is set to the first level, and the DPDT analog switch 14 is connected to the left channel interface and the right channel interface; when the control function of the mobile terminal is turned off, the DSP IC 12 controls the pin according to the control command sent by the AP11. The level is set to the second level, and the DPDT analog switch 14 is connected to the Codec 15.

In addition, DSP IC12 and AP11 and Codec15 are connected through SlimBus (Serial Low-power Inter-chip Media Bus) interface or I2S (Inter-IC Sound, integrated circuit built-in audio) interface.

SlimBus interface or I2S interface for transmitting audio data between DSP IC12 and AP11, and transmitting audio data between DSP IC12 and Codec15.

For example, when the mobile terminal needs to make a voice call, the AP11 turns off the hearing aid function of the mobile terminal, and controls the DSP IC12 to switch to the through mode. The audio signal input by the MIC 13 is generated by the sound collected from the outside, and at this time, the DSP IC 12 receives After the audio signal input to the MIC 13, the audio signal is not processed, but the audio signal is transmitted to the AP 11 and the Codec 15 through the SlimBus interface or the I2S interface.

It should be noted that the audio data transmitted between the DSP IC 12 and the AP 11 and the audio data transmitted between the DSP IC 12 and the Codec 15 are not limited to the audio signal input by the MIC 13, and may be other audio data. For example, in an implementation manner, when the hearing aid function is turned on, the AP11 and the Codec 15 can also send the audio data to be played by the mobile terminal to the DSP IC12, and the DSP IC 12 processes the audio data and then passes the DPDT analog switch 14 And HP PA16 output.

It should be noted that, in the embodiment of the present invention, since the HP PA 16 processes an analog signal, a DAC is also provided in the Codec 15.

In addition, since the DSP IC 12 cannot actively communicate with the AP 11, the DSP IC 12 further includes an interrupt output port in the embodiment of the present invention.

The DSP IC 12 is configured to send an interrupt message to the AP 11 through an interrupt (IRQ) interrupt request output port, and the interrupt message is used to request communication to the AP 11.

For example, when the DSP IC12 fails, it cannot actively report the fault to the AP11. It needs to send an interrupt message to the AP11 through the interrupt output port. After the AP11 receives the interrupt message, it sends an inquiry message to the DSP IC12 through the I2C interface. IC12 reports the fault to AP11 through the I2C interface.

The mobile terminal-based hearing aid device provided by the embodiment of the invention integrates the functions of the hearing aid into the mobile terminal, so that the user can carry the two devices of the mobile terminal and the hearing aid without carrying the charger of the two devices at the same time. Hearing aid users provide convenience. In addition, since the DSP IC for implementing the hearing aid function is set outside the Codec in the embodiment of the present invention, after the hearing aid function of the mobile terminal is enabled, the Codec and the AP of the mobile terminal are in the energy saving mode, which can reduce the work of the mobile terminal. Consumption, extending the standby time of the mobile terminal.

The embodiment of the present invention further provides a mobile terminal, which includes the mobile terminal-based hearing aid device described in the foregoing embodiment, and the mobile terminal is connected to the audio playing device or uses its own audio playing device to implement the function of the hearing aid. When the mobile terminal implements the function of the hearing aid, the additional power consumption is small.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

The foregoing is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can within the technical scope disclosed by the present invention. It is easy to think of variations or substitutions that are within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A hearing aid device based on a mobile terminal, characterized in that the device comprises: an application processor AP, a digital signal processing integrated circuit DSP IC, a microphone MIC, a switch, a codec Codec and a headphone power amplifier HP PA, The switch is used to switch between the first channel and the second channel;

The first channel includes the AP, the DSP IC, the switch, and the HP PA connected in sequence, wherein an input end of the DSP IC is connected to the MIC;

The second channel includes the AP, the Codec, the switch, and the HP PA connected in sequence;

The AP is configured to control, by the DSP IC, the switch to communicate with the DSP IC when the hearing aid function is turned on, and control the AP and the Codec to enter a power saving mode;

The DSP IC is configured to receive an audio signal to be processed input through the MIC, process the audio signal to be processed, and send the processed audio signal to the HP PA via the DPDT analog switch;

The HP PA is used to amplify the received audio signal.
The mobile terminal-based hearing aid device according to claim 1, wherein the MIC is a digital MIC, and the DSP IC comprises a digital signal processor DSP, a digital-to-analog converter DAC, and a left channel interface, and a right sound. a channel interface, the DSP IC is connected to the switch through the left channel interface and the right channel interface;

The DSP is configured to receive a digital audio signal sent by the digital MIC, process the digital audio signal, and send the processed digital audio signal to the DAC;

The DAC is configured to receive the processed digital audio signal sent by the DSP, convert the processed digital audio signal into an analog digital signal, and pass the analog digital signal through the left channel interface and the The right channel interface is sent to the HP PA via the switch.
The mobile terminal-based hearing aid device according to claim 1, wherein the MIC is an analog MIC, and the DSP IC comprises an analog-to-digital converter ADC, a digital signal processor DSP, a digital-to-analog converter DAC, and a left a channel interface, a right channel interface, the DSP IC is connected to the switch through the left channel interface and the right channel interface;

The ADC is configured to receive an analog audio signal of the analog MIC input, and the simulation is performed Converting the audio signal into a digital audio signal and transmitting the digital audio signal to the DSP;

The DSP is configured to receive the digital audio signal sent by the ADC, process the digital audio signal, and send the processed digital audio signal to the DAC;

The DAC is configured to receive the processed digital audio signal sent by the DSP, convert the processed digital audio signal into an analog digital signal, and pass the analog digital signal through the left channel interface and the The right channel interface is sent to the HP PA via the switch.
The hearing aid device based on the mobile terminal according to claim 2 or 3, wherein the switch is a double-pole double-throw DPDT analog switch, and the AP and the DSP IC are connected through a two-wire serial bus I2C. Connected, the DSP IC further includes a control pin;

The I2C interface is configured to transmit a control instruction sent by the AP to the DSP IC, and transmit a control result that is sent back by the DSP IC to the AP;

The control pin is connected to the DPDT analog switch, and is configured to control a connection state of the DPDT analog switch according to a control instruction sent by the AP to the DSP IC, when a control function of the mobile terminal is enabled. The DSP IC sets a level of the control pin to a first level according to a control instruction sent by the AP, and the DPDT analog switch is in communication with the left channel interface and the right channel interface; When the control function of the mobile terminal is turned off, the DSP IC sets the level of the control pin to a second level according to a control instruction sent by the AP, and the DPDT analog switch is in communication with the Codec.
The hearing device based on the mobile terminal according to claim 4, wherein the DSP IC and the AP and the Codec pass through a low-power inter-chip serial media bus SlimBus interface or an integrated circuit built-in audio I2S interface connection;

The SlimBus interface or the I2S interface is configured to transmit audio data between the DSP IC and the AP, and transmit audio data between the DSP IC and the Codec.
The hearing aid device based on the mobile terminal according to claim 5, wherein the DSP IC further comprises an interrupt output port;

The DSP IC is configured to send an interrupt message to the AP by using the interrupt output port, where the interrupt message is used to request communication to the AP.
A hearing aid device based on a mobile terminal according to claim 6, wherein

The DSP IC is further configured to provide a clock of the digital MIC to the digital MIC.
The hearing aid device based on the mobile terminal according to any one of claims 1 to 7, wherein the output end of the HP PA is connected to the earphone interface, and the HP PA amplifies the received audio signal. Transmitting to the earphone connected to the earphone interface through the earphone interface; or

The HP PA amplifies the received audio signal and transmits it to an audio playback device that is wirelessly connected to the mobile terminal.
A mobile terminal, comprising: the mobile terminal-based hearing aid device according to any one of claims 1 to 8.