WO2020057656A1

WO2020057656A1 - Method, device and mobile terminal for collecting external sound wave based on sound output element

Info

Publication number: WO2020057656A1
Application number: PCT/CN2019/107101
Authority: WO
Inventors: 蒋勇高; 王步青
Original assignee: 深圳市万普拉斯科技有限公司
Priority date: 2018-09-21
Filing date: 2019-09-20
Publication date: 2020-03-26
Also published as: CN109040378A

Abstract

Disclosed by the present application are a method, device, mobile terminal and non-volatile computer readable storage medium for collecting external sound waves on the basis of a sound output element. The method is applied to the mobile terminal. The mobile terminal comprises a sound output element and a sound input element and is provided with a sound output channel and an environment acquisition channel of the sound output element. The method comprises: controlling the sound output element and the sound input element to form a loop; when the sound output element is not in a sound output state, controlling the sound output element to switch to the environment acquisition channel; controlling the sound output element to collect an external environment acoustic signal; obtaining an audio signal received from the sound input element and pre-processing the audio signal and the environment acoustic signal. According to the technical solution of the present application, the sound output element may have multiple functions, the cost of the device may be reduced, and noise elimination and other functions can be achieved by using the sound input element, thus solving the problem of the hardware space layout for additional components.

Description

Method, device and mobile terminal for collecting external sound waves based on sound output element

This application is based on a Chinese invention patent application filed on September 21, 2018 with application number 201811107396.4, entitled "Method, Device and Mobile Terminal for Acquiring External Sound Waves Based on Sound Output Elements", and claims its priority.

Technical field

The present application relates to the field of communications, and in particular, to a method, a device, and a mobile terminal for collecting external sound waves based on a sound output element.

Background technique

With the continuous improvement of people's demand for call quality, the number of mics (microphones) existing in mobile terminals is generally more than two. One main mic is used to record call audio, and the other one or more secondary mics use dual The principle of Mai noise reduction achieves voice denoising during a call, so that better call quality can be guaranteed even in a noisy environment. However, this makes the mobile terminal often need to add an additional secondary mic on the basis of the main mic to achieve dual microphone noise reduction, which not only increases the device cost, but also requires additional space to place the additional secondary mic, which is not conducive to hardware layout and the like.

Summary of the Invention

In view of the above problems, this application provides a method for collecting external sound waves based on a sound output element. By using an existing sound output element to collect external sound signals and performing corresponding processing, the need to add an additional sound input element in the prior art can be solved. To achieve double wheat noise reduction and other issues.

An embodiment of the present application provides a method for collecting external sound waves based on a sound output element. The method for collecting external sound waves based on a sound output element is applied to a mobile terminal. The mobile terminal includes a sound output element and a sound input element. The mobile terminal is provided with a sound output path and an environment acquisition path of the sound output element, and the method includes:

Controlling the sound output element to form a loop with the sound input element;

When the sound output element is not in a sound output state, controlling the sound output element to switch to the environment acquisition path;

Controlling the sound output element to collect external environment sound wave signals;

Acquiring an audio signal received from the sound input element, and performing preset processing on the audio signal and the ambient sound wave signal.

Another embodiment of the present application provides a device for collecting external sound waves based on a sound output element. The device for collecting external sound waves based on a sound output element is applied to a mobile terminal. The mobile terminal includes a sound output element and a sound input element. The mobile terminal is provided with a sound output path and an environment acquisition path of the sound output element, and the device includes:

A loop control module, configured to control the sound output element and the sound input element to form a loop;

A path switching module, configured to switch the sound output element to the environment collection path when the sound output element is not in a sound output state;

An acquisition control module, configured to cause the sound output element to acquire an external environmental sound wave signal when switching to the environmental acquisition path;

The signal processing module is configured to obtain an audio signal received from the sound input element and perform preset processing on the audio signal and the ambient sound wave signal.

Another embodiment of the present application provides a mobile terminal including a controller, a memory, a sound input element, and a sound output element. The mobile terminal is provided with a sound output path and an environment acquisition path of the sound output element. ,

The memory is configured to store computer-readable instructions, and the controller is configured to implement the above-mentioned method for collecting external sound waves based on a sound output element when executing the computer-readable instructions.

Another embodiment of the present application provides a computer non-volatile readable storage medium, which stores computer readable instructions, and when the computer readable instructions are executed, the implementation of collecting external sound waves based on the sound output element described above is implemented. method.

The technical solution of the present application establishes an environment acquisition channel of a sound output element, so as to use the sound output element to collect external sound wave signals, realizes the reuse of the sound output element, and achieves the purpose of saving the cost of the device. Form a loop, which can be used to reduce noise during calls and improve anti-interference during voice interaction. It can also solve problems such as spatial layout caused by adding additional sound input components to achieve noise cancellation.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the present application more clearly, the drawings used in the embodiments are briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be used. Seen as a limitation on the scope of protection of this application.

FIG. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application;

2 is a schematic diagram of a hardware structure of a method for collecting external sound waves based on a sound output element according to Embodiment 1 of the present application;

3 is a schematic flowchart of a method for collecting external sound waves based on a sound output element according to Embodiment 1 of the present application;

4 is a schematic diagram of an application of noise cancellation based on a method for collecting external sound waves based on a sound output element according to Embodiment 1 of the present application;

FIG. 5 is a schematic structural diagram of a device for collecting external sound waves based on a sound output element according to Embodiment 2 of the present application.

Explanation of main component symbols:

100-mobile phone; 110-RF circuit; 120-memory; 130-input unit; 140-display unit; 150-shooting unit; 160-audio circuit; 170-wireless fidelity module; 180-processor; 190-power supply; A -Sound output path; B-environment acquisition path; 20- device for collecting external sound waves based on sound output elements; 200-loop control module; 210-path switching module; 220- acquisition control module; 230- signal processing module.

detailed description

In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments.

The components of the embodiments of the present application described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall into the protection scope of the present application.

Each of the following embodiments can be applied to a mobile terminal as shown in FIG. 1, such as a mobile phone. FIG. 1 shows a structural block diagram of the mobile phone. The mobile phone 100 includes: a radio frequency (RF) circuit 110, a memory 120, The input unit 130, the display unit 140, the photographing unit 150, the audio circuit 160, a wireless fidelity (WiFi) module 170, a processor 180, and a power supply 190 and other components. The radio frequency circuit 110 may be used to receive and send wireless signals, and the like, and the memory 120 may be used to store application programs required by the mobile phone 100 and related file information of the user. The input unit 130 may include keys, a touch panel, or other input devices to receive information from a user. The display unit 140 may include a display panel, which is mainly used to display information such as images and text. The shooting unit 150 It mainly includes front and rear cameras, which are mainly used for taking pictures, videos, etc. The audio circuit 160 is connected to sound output devices such as earpieces and speakers, and sound input devices such as microphones, which can be used to record or play voice. wifi signal to realize information transmission and so on. The processor 180, as the control center of the mobile phone 100, is mainly used to make other units or modules perform corresponding functions, etc., while the power supply 190 mainly includes battery equipment, which is used to provide the required working voltage for each module or unit in the mobile phone 100, etc. .

Those skilled in the art can understand that the structure of the mobile phone 100 shown in FIG. 1 does not constitute a limitation on the mobile phone, and may include more or fewer parts than those shown in the figure, or combine certain parts, or arrange different parts. The following uses a mobile phone as an example to describe the technical solution of this application. Of course, this application is not limited to being applied to a mobile phone, but can also be applied to a tablet computer or the like.

In a mobile terminal, the sound output element is mainly composed of a diaphragm, a coil, and a magnet. Its working principle mainly includes: When the audio electrical signal output by the mobile terminal passes through the coil in the sound output element, the magnetic field generated by the coil occurs. The change, in turn, drives the vibration of the diaphragm to excite the vibration of the surrounding air, thereby emitting sound waves. As for the sound input element, its structure also includes structures such as diaphragm, coil, and magnet. Its working principle mainly includes: When the external sound wave causes the diaphragm of the sound input element to vibrate, the mechanical vibration of the diaphragm will drive the internal coil at this time. The vibration of the coil and the vibration of the coil will change the transmission of the magnetic field, and then generate a current signal and send it to the inside for digitization and other processing, so as to achieve the collection of external sound.

Considering that the structure of the sound output element is similar to the structure of the sound input element, and its working principle is opposite, this application proposes a method for collecting external sound waves based on the sound output element. The following describes the present application with specific embodiments. Of course, the present application is not limited to these specific embodiments.

Example 1

This embodiment proposes a method for collecting external sound waves based on a sound output element. The method for collecting external sound waves based on a sound output element can be applied to a mobile terminal, such as a mobile phone, a tablet computer, etc., where the mobile terminal usually includes a sound output element And sound input components.

Generally, the mobile terminal is generally provided with a sound output path of the sound output element, which can be used to send an internal audio signal to the sound output element and output sound externally. In the present application, in order to enable the sound output element to be used to collect external sound waves, an environmental acquisition path for the sound output element may also be provided in the mobile terminal, and the collected external sound wave signals may be sent through the environmental acquisition path. The mobile terminal internally performs corresponding processing.

Please refer to FIG. 2, the mobile terminal includes a processor 180 and an audio circuit 160, and the audio circuit 160 includes an ADC conversion unit and a DAC conversion unit. Since a sound output element is usually only connected to the DAC conversion unit, the system shown in FIG. 2 is formed. Sound output path A. The DAC conversion unit may be used to convert an internal digital audio signal into an analog signal and send it to a sound output element through the sound output path A for output. Exemplarily, the audio circuit 160 may be a device such as a sound card.

In this embodiment, as shown in FIG. 2, the sound output element is also electrically connected to the ADC conversion unit at the same time, and a corresponding control path is configured between the ADC conversion unit and the processor 180 to form the environment acquisition path. B. Exemplarily, the control path is mainly used to select the control logic of the ADC conversion unit. Therefore, when it is necessary to use the sound output element for external sound wave signal collection, the processor 180 controls to open the environment acquisition path B and close the sound output path A, so as to read the external sound wave collected by the sound output element through the environment acquisition path B signal. It should be understood that the sound output path A and the environment acquisition path B cannot be in the selected state at the same time, that is, when the sound output path A is outputting sound, the processor 180 controls the environment acquisition path B to be closed; and when the sound output path A is not outputting sound, At this time, the processor 180 controls the environment acquisition path B to be in an open state, thereby collecting external environment sounds.

Considering that the upper-layer application of the mobile terminal calls the sound output element to collect external sound wave signals, the control logic of the ADC conversion unit can be interface-encapsulated, and the interface can be called by the upper-layer application program, so as to achieve The selection of the environment acquisition path B. At the same time, it is also possible to create a PCM capture device and assign a device ID to uniquely identify the application scenario of the sound wave signal collected by the sound output element. The PCM capture device creates a virtual device for the sound output element. The file can be used to store the PCM data obtained by converting the acoustic signal collected by the sound output element. Among them, when the PCM data needs to be processed, the PCM data can be obtained from the PCM capture device through the PCM read operation or the new PCM data obtained by the conversion can be written into the PCM capture device through the PCM write operation. Wait.

Exemplarily, taking the ALSA audio architecture commonly used in mobile terminals as an example, the ALSA architecture contains a large number of open source drivers for audio equipment and corresponding ALSA standard interfaces. When the control logic of the ADC conversion unit is ALSA standard interface After encapsulation, access to the underlying ADC conversion unit and sound output components can be achieved by calling the encapsulated interface. Of course, it is also possible to configure a data path for the ADC conversion unit and the sound output component through the audio bus to send the collected and converted sound wave data to an upper-layer application for storage or invocation. In this embodiment, the audio bus may include, but is not limited to, an I ² S bus, a Slimbus bus, and the like.

Preferably, considering that the analog electrical signal collected by the sound output element may be relatively weak, the analog signal collected by the sound output element may be amplified and conditioned and then sent to the ADC conversion unit for conversion. Specifically, a corresponding amplification and conditioning circuit may be provided between the ADC conversion unit and the sound output element, and is configured to perform digital conversion on the amplified processing and then send it to the ADC conversion unit. By amplifying, filtering, and other conditioning of the collected analog signal, it can be ensured that the analog signal can be successfully identified and processed by the ADC conversion unit, thereby improving the accuracy and reliability of the acquisition.

Referring to FIG. 3, the sound output path A and the environment acquisition path B based on the above-mentioned sound output element are described in detail below.

Step S100: controlling the sound output element and the sound input element to form a loop.

When it is necessary to use the sound output element to collect external sound signals, the processor 180 may control the sound output element and the sound input element to form a loop, so after the loop is formed, the sound input element is mainly used to receive the external audio signal, and the sound output element It is mainly used for transmitting audio signals. For example, the loop may be a call loop established during a call, that is, during a call, a sound input element such as a microphone may be used to receive an audio signal during a call; and a sound output element such as a microphone or a speaker may be used The audio signal of the receiving call party is output through the sound output path A. It can be understood that the loop should not be limited to the above-mentioned call answer, but may also be, for example, a conversation answer formed during voice interaction.

Step S110: When the sound output element is not in a sound output state, control the sound output element to switch to the environment acquisition path.

When the sound output element is outputting sound, its environment collection path B will be closed, and when the sound output element is not in the sound output state, the processor 180 will switch the control sound output element from the sound output path A to the The environmental acquisition path B is used to start acquiring external acoustic signals. Still using the above-mentioned call loop as an example, when the sound output element is transmitting the voice of the opposite party, the sound output element will be in the sound output path A; and when the sound output element does not emit a sound, it will switch to the environment collection at this time Path B.

Step S120: controlling the sound output element to collect external environment sound wave signals.

After switching to the environment collection path B, the processor 180 will control the sound output element to start collecting sound wave signals from the outside. Specifically, the processor 180 will select the control logic of the ADC conversion unit by selecting the control path of the environment acquisition path, so as to control the ADC conversion unit to receive and convert the environmental sound wave signal collected by the sound output element.

Step S130: Obtain an audio signal received from the sound input element, and perform preset processing on the audio signal and the ambient sound wave signal.

The sound input element will continuously receive the external audio signal after the loop is formed. Therefore, after the sound output element collects the external sound wave signal, the processor 180 will collect the audio signal collected by the sound input element and the sound output element into the sound wave. The signals are processed accordingly.

Taking the above-mentioned call application as an example, the preset process may be a call noise reduction process. When the external environment is noisy, the audio signals collected by the sound input element mainly include the voice signal of the call, but usually include the environmental noise signal, so the quality of the call is often easily affected. Therefore, it is necessary to perform the call during the call. Voice denoising processing to ensure better call quality when the external environment is noisy. Specifically, the sound input element will collect the audio signal, and the sound output element will collect the external sound wave signal after switching to the environmental collection path B. The processor 180 then sends the audio signal and the external sound wave signal to a noise canceling processing unit for noise canceling processing.

Preferably, when the sound output element and the sound input element are used to implement voice denoising, the sound output element should be isolated from the sound input element or have a certain distance to prevent the audio signal and sound output collected by the sound input element The acoustic signals collected by the components are basically the same, so that the normal call voice signal will be partially cancelled when the signals are superimposed.

In this embodiment, the call audio signal and the ambient sound wave signal can be subtracted and amplified according to the principle of double microphone denoising, a modified audio signal will be output, and the modified audio signal will be amplified and filtered. Then, the final denoised audio signal can be obtained, and then the denoised audio signal is output to achieve a denoising effect.

Exemplarily, as shown in FIG. 4, both the audio signal collected by the sound input element and the ambient sound wave signal collected by the sound output element include two types of signals, which are a call voice signal and an environmental noise signal, respectively. Considering that during the call, the user is mainly close to the voice input element to make a call, the call voice signal collected by the voice input element is often much larger than the voice signal collected by the voice output element.

Therefore, when the call audio signal and the ambient sound wave signal are simultaneously sent to the non-inverting and anti-inverting ends of the differential amplifier in the noise canceling processing module in the processor 180, for the same background noise signal portion that is collected The signal of the two signals superimposed on the background noise signal will be cancelled, while the remaining difference signal is a clearer modified audio signal. Then, the modified audio signal is subjected to processing such as amplification, and the finally obtained denoised audio signal is output. Among them, the principle of double wheat denoising comes from the principle of “acoustic wave superposition and mutual cancellation”. Since the propagation of sound is achieved through the vibration of the medium, if the waveform between the waves is in the opposite phase, it will be cancelled.

Optionally, if there are multiple sound output elements having both a sound output path A and an environment collection path B, when one sound output element is occupied, other sound output elements can be called without switching back and forth between occupied ones. The path of the sound output element. In this embodiment, the sound input element may be a microphone for receiving sound, and the sound output element may be a microphone and / or a speaker. For example, when the microphone and the speaker in the mobile terminal have already established the environment collection path B, if the microphone and the sound input element form a loop, the speaker may be used for external sound signal collection. Similarly, if the speaker is occupied, the microphone can be used to collect external sound signals.

Through the method for collecting external sound waves based on the sound output element proposed in this implementation, the function of the sound output element can be reused and the cost of the device can be reduced. At the same time, it also forms a loop with the sound input element and further implements applications such as call denoising on the basis of the loop. Not only can the existing sound output element be used instead of the additional sound input element to collect environmental noise signals, It can also solve the spatial layout and other problems caused by the addition of new sound input components to the greatest extent. Of course, the environment acquisition path based on the sound output element and the circuit with the sound input element can also, but not limited to, be used in other applications such as voice interactive games to improve anti-interference ability.

Example 2

Please refer to FIG. 5. Based on the foregoing Embodiment 1, this embodiment provides a device 20 for collecting external sound waves based on a sound output element. The device 20 for collecting external sound waves based on a sound output element is applied to a mobile terminal. The mobile terminal includes A sound output element and a sound input element, the mobile terminal is provided with a sound output path of the sound output element, the mobile terminal is further provided with the environment acquisition path, and the device includes:

The loop control module 200 is configured to control the sound output element and the sound input element to form a loop;

A path switching module 210, configured to switch the sound output element to the environment collection path when the sound output element is not in a sound output state;

An acquisition control module 220, configured to cause the sound output element to acquire an external environmental sound wave signal when switching to the environmental acquisition path;

The signal processing module 230 is configured to obtain an audio signal received from the sound input element and perform preset processing on the audio signal and the ambient sound wave signal.

The device 20 for collecting external sound waves based on the sound output element corresponds to the method for collecting external sound waves based on the sound output element in Embodiment 1. Any option in Embodiment 1 is also applicable to this embodiment, which is not described in detail here.

This application also provides a mobile terminal. The mobile terminal may include a smart phone, a tablet computer, and the like. The mobile terminal is preferably a smart phone or a tablet computer. The mobile terminal may include a processor, a memory, a sound input element, and a sound output element. The mobile terminal is provided with a sound output path and an environment acquisition path of the sound output element. The memory may be used to store computer-readable instructions, and the processor runs the computer-readable instructions to cause the mobile terminal to execute the method for collecting external sound waves based on the sound output element or the device for collecting external sound waves based on the sound output element. The function of each module.

Further, the mobile terminal further includes: an ADC conversion unit, a sound output element, the ADC conversion unit, and a processor are electrically connected in order to establish the environment acquisition path, and the environment acquisition is configured between the ADC conversion unit and the processor. A control path for a path.

Further, the mobile terminal further includes: an amplification conditioning circuit, which is disposed between the ADC conversion unit and the sound output element, and is used to amplify the ambient sound wave signals collected by the sound output element and send the amplified sound signal to the ADC conversion unit.

The memory may include a storage program area and a storage data area. The storage program area may store an operating system and an application program required for at least one function. The storage data area may store data (such as audio data) created according to the use of the mobile terminal. , Phone book, etc.). In addition, the memory may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage device.

The present application further provides a computer non-volatile readable storage medium for storing the computer-readable instructions used in the mobile terminal.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowchart and structure diagrams in the accompanying drawings show a possible implementation architecture of the device, method, and computer-readable instruction product according to various embodiments of the present application. , Functions and operations. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, which contains one or more components for implementing a specified logical function Executable instructions.

It should also be noted that in alternative implementations, the functions labeled in the blocks may also occur in a different order than those labeled in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be a dedicated hardware-based system that performs a specified function or action. To achieve, or can be implemented by a combination of dedicated hardware and computer instructions.

In addition, the functional modules or units in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The foregoing storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes .

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application.

Claims

A method for collecting external sound waves based on a sound output element, characterized in that the method is applied to a mobile terminal, the mobile terminal includes a sound output element and a sound input element, and the mobile terminal is provided with a sound of the sound output element An output path and an environmental acquisition path, the method includes:

Controlling the sound output element to form a loop with the sound input element;

When the sound output element is not in a sound output state, controlling the sound output element to switch to the environment acquisition path;

Controlling the sound output element to collect external environment sound wave signals;

Acquiring an audio signal received from the sound input element, and performing preset processing on the audio signal and the ambient sound wave signal.
The method for collecting external sound waves based on a sound output element according to claim 1, wherein the mobile terminal comprises a processor and an ADC conversion unit,

The sound output element, the ADC conversion unit, and the processor are electrically connected in order to establish the environment acquisition path, and one of the environment acquisition paths is configured between the ADC conversion unit and the processor. Control pathway.
The method for collecting external sound waves based on a sound output element according to claim 2, further comprising:

Amplify and adjust the ambient sound wave signal collected by the sound output element and send it to the ADC conversion unit.
The method for collecting external sound waves based on a sound output element according to claim 1, wherein the preset processing comprises:

Denoise processing is performed on the audio signal and the ambient sound wave signal to obtain a denoised audio signal.
The method for collecting external sound waves based on a sound output element according to claim 4, wherein the noise reduction processing comprises:

The ambient sound wave signal and the audio signal are simultaneously sent to a differential amplifier for signal superposition to obtain a modified audio signal, and the modified audio signal is amplified and filtered to obtain the denoised audio signal.
A device for collecting external sound waves based on a sound output element is characterized in that the device for collecting external sound waves based on a sound output element is applied to a mobile terminal, and the mobile terminal includes a sound output element and a sound input element. There is a sound output path and an environment collection path of the sound output element, and the device includes:

A loop control module, configured to control the sound output element and the sound input element to form a loop;

A path switching module, configured to switch the sound output element to the environment collection path when the sound output element is not in a sound output state;

An acquisition control module, configured to cause the sound output element to acquire an external environmental sound wave signal when switching to the environmental acquisition path;

The signal processing module is configured to obtain an audio signal received from the sound input element and perform preset processing on the audio signal and the ambient sound wave signal.
The device for collecting external sound waves based on a sound output element according to claim 6, wherein the mobile terminal comprises a processor and an ADC conversion unit,

The sound output element, the ADC conversion unit, and the processor are electrically connected in order to establish the environment acquisition path, and one of the environment acquisition paths is configured between the ADC conversion unit and the processor. Control pathway.
The device for collecting external sound waves based on a sound output element according to claim 7, wherein the device further comprises: an amplification conditioning circuit,

The amplification conditioning circuit is provided between the ADC conversion unit and the sound output element, and is used to amplify the ambient sound wave signal collected by the sound output element and send the amplified signal to the ADC conversion unit.
The device for collecting external sound waves based on a sound output element according to claim 6, wherein the signal processing module is specifically configured to:

Denoise processing is performed on the audio signal and the ambient sound wave signal to obtain a denoised audio signal.
The device for collecting external sound waves based on a sound output element according to claim 9, wherein the signal processing module is specifically configured to:

The ambient sound wave signal and the audio signal are simultaneously sent to a differential amplifier for signal superposition to obtain a modified audio signal, and the modified audio signal is amplified and filtered to obtain the denoised audio signal.
A mobile terminal, characterized in that the mobile terminal includes a processor, a memory, a sound input element, and a sound output element, and the mobile terminal is provided with a sound output path and an environment acquisition path of the sound output element,

The memory is configured to store computer-readable instructions, and the processor is configured to implement the following steps when executing the computer-readable instructions:

Controlling the sound output element to form a loop with the sound input element;

When the sound output element is not in a sound output state, controlling the sound output element to switch to the environment acquisition path;

Controlling the sound output element to collect external environment sound wave signals;

Acquiring an audio signal received from the sound input element, and performing preset processing on the audio signal and the ambient sound wave signal.
The mobile terminal according to claim 11, further comprising: an ADC conversion unit,

The sound output element, the ADC conversion unit, and the processor are electrically connected in order to establish the environment acquisition path, and one of the environment acquisition paths is configured between the ADC conversion unit and the processor. Control pathway.
The mobile terminal according to claim 12, further comprising: an amplification conditioning circuit,

The amplification conditioning circuit is provided between the ADC conversion unit and the sound output element, and is used to amplify the ambient sound wave signal collected by the sound output element and send the amplified signal to the ADC conversion unit.
The mobile terminal according to claim 11, wherein when the processor executes the computer-readable instructions to implement the preset processing, the processor comprises the following steps:

Denoise processing is performed on the audio signal and the ambient sound wave signal to obtain a denoised audio signal.
The mobile terminal according to claim 14, wherein when the processor executes the computer-readable instructions to implement the noise cancellation processing, the processor comprises the following steps:

The ambient sound wave signal and the audio signal are simultaneously sent to a differential amplifier for signal superposition to obtain a modified audio signal, and the modified audio signal is amplified and filtered to obtain the denoised audio signal.
A computer non-volatile readable storage medium is characterized in that it stores computer readable instructions, and when the computer readable instructions are executed, the following steps are implemented:

Controlling the sound output element to form a loop with the sound input element;

When the sound output element is not in a sound output state, controlling the sound output element to switch to the environment acquisition path;

Controlling the sound output element to collect external environment sound wave signals;

Acquiring an audio signal received from the sound input element, and performing preset processing on the audio signal and the ambient sound wave signal.
The computer non-volatile readable storage medium according to claim 16, further comprising: an ADC conversion unit,

The sound output element, the ADC conversion unit, and the processor are electrically connected in order to establish the environment acquisition path, and one of the environment acquisition paths is configured between the ADC conversion unit and the processor. Control pathway.
The computer non-volatile readable storage medium according to claim 17, further comprising: an amplification conditioning circuit,

The amplification conditioning circuit is provided between the ADC conversion unit and the sound output element, and is used to amplify the ambient sound wave signal collected by the sound output element and send the amplified signal to the ADC conversion unit.
The computer non-volatile readable storage medium according to claim 16, wherein when the computer-readable instructions are executed by one or more processors to implement the preset processing, the method comprises the following steps:

Denoise processing is performed on the audio signal and the ambient sound wave signal to obtain a denoised audio signal.
The computer non-volatile readable storage medium according to claim 19, wherein when the computer-readable instructions are executed by one or more processors to implement the noise cancellation processing, the method includes the following steps:

The ambient sound wave signal and the audio signal are simultaneously sent to a differential amplifier for signal superposition to obtain a modified audio signal, and the modified audio signal is amplified and filtered to obtain the denoised audio signal.