WO2018018782A1

WO2018018782A1 - Noise reduction method, terminal, and computer storage medium

Info

Publication number: WO2018018782A1
Application number: PCT/CN2016/105309
Authority: WO
Inventors: 刘飞
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-07-25
Filing date: 2016-11-10
Publication date: 2018-02-01
Also published as: CN107659864A

Abstract

Disclosed are a noise reduction method, a terminal, and a computer storage medium. The method comprises: detecting whether earphones are connected to a terminal, and detecting whether the terminal is in a call state; setting an MIC of the earphones in a working state as a main MIC when it is detected that the earphones are connected to the terminal, and the terminal is in a call state; activating the MIC of the terminal, and setting the MIC of the terminal as an auxiliary MIC; acquiring a voice signal by using the main MIC, and acquiring an ambient noise signal by using the auxiliary MIC; and performing audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

Description

Noise reduction method and terminal, computer storage medium

Technical field

The invention relates to a noise reduction technology, in particular to a noise reduction method and a terminal and a computer storage medium.

Background technique

Intelligent terminals, such as mobile phones, tablet computers, etc., generally have a microphone (MIC), which can be used to collect sound information, for example, using a MIC to collect the user's voice during a call.

At present, the noise reduction of the MIC of the smart terminal is mainly based on the MIC of the terminal itself for noise reduction. There are two MICs in the terminal, one is the main MIC for collecting voice, and the other is the auxiliary MIC for collecting environmental noise. The data collected by the two MICs is processed to achieve noise reduction.

The above solution only reduces noise for the MIC of the terminal body, and the method for noise reduction between the earphone MIC and the MIC on the terminal body is blank, which causes the headset MIC to work when the headset is used for talking, on the terminal. The MIC does not work and the resources generated are wasted.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides a noise reduction method, a terminal, and a computer storage medium.

The noise reduction method provided by the embodiment of the invention includes:

Detecting whether the headset is connected to the terminal, and detecting whether the terminal is in a call state;

When detecting that the earphone is connected to the terminal, and the terminal is in a call state, setting the headset MIC in the working state as the main MIC; and activating the terminal MIC, setting the terminal MIC Set as auxiliary MIC;

Acquiring a voice signal by using the main MIC, and collecting an environmental noise signal by using the auxiliary MIC;

Audio processing is performed on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

In the embodiment of the present invention, the detecting whether the earphone is connected to the terminal comprises:

Detect whether the headset is plugged into the terminal; or,

Use Bluetooth to detect if the headset is connected to the terminal.

In the embodiment of the present invention, the detecting whether the earphone is connected to the terminal, and detecting whether the terminal is in a call state, includes:

Detecting whether the detecting pin of the earphone socket changes from a low level to a high level, and when the detecting pin of the earphone socket changes from a low level to a high level, determining that the earphone is inserted into the terminal;

Detect whether the MIC pin of the earphone socket changes from a low level to a high level. When the MIC pin of the earphone socket changes from a low level to a high level, it is determined that the terminal is in a call state.

In the embodiment of the present invention, the audio processing of the voice signal and the ambient noise signal includes:

Performing signal amplification processing on the voice signal and the ambient noise signal;

Acquiring the noise signal in the voice signal according to the ambient noise signal to obtain an analog noise-reduced voice signal;

Performing analog-to-digital conversion on the analog noise-reduced speech signal to obtain a digital noise-reduction speech signal.

In the embodiment of the present invention, the method further includes:

When the terminal talk ends, the primary MIC and the secondary MIC are turned off.

The terminal provided by the embodiment of the present invention includes:

The detecting module is configured to detect whether the earphone is connected to the terminal, and detect whether the terminal is in a call state;

a setting module configured to: when detecting that the earphone is connected to the terminal, and the terminal is in a call state, setting the headset MIC in the working state as a main MIC; and activating the terminal MIC, setting the terminal MIC as a secondary MIC;

An acquisition module, configured to collect a voice signal by using the primary MIC, and collect an ambient noise signal by using the auxiliary MIC;

And an audio module configured to perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

In the embodiment of the present invention, the detecting module is further configured to detect whether the earphone is inserted into the terminal; or use Bluetooth to detect whether the earphone is connected to the terminal.

In the embodiment of the present invention, the detecting module includes:

The first detecting sub-module is configured to detect whether the detecting pin of the earphone socket changes from a low level to a high level, and when the detecting pin of the earphone socket changes from a low level to a high level, determining that the earphone is inserted into the terminal;

The second detecting submodule is configured to detect whether the MIC pin of the earphone socket changes from a low level to a high level, and when the MIC pin of the earphone socket changes from a low level to a high level, determining that the terminal is in a call state.

In the embodiment of the present invention, the audio module includes:

a signal amplification submodule configured to perform signal amplification processing on the voice signal and the ambient noise signal;

a noise reduction sub-module configured to cancel a noise signal in the voice signal according to the ambient noise signal to obtain an analog noise-reduced voice signal;

And an analog-to-digital conversion submodule configured to perform analog-to-digital conversion on the analog noise-reduced speech signal to obtain a digital noise-reduction speech signal.

In the embodiment of the present invention, the terminal further includes:

The module is closed, configured to turn off the primary MIC and the secondary MIC when the terminal is over.

The computer storage medium provided by the embodiment of the present invention stores a computer program for performing the above noise reduction method.

In the technical solution of the embodiment of the present invention, detecting whether the earphone is connected to the terminal, and detecting whether the terminal is in a call state; when detecting that the earphone is connected to the terminal, and the terminal is in a call state, the earphone MIC that is in the working state Setting a main MIC; and activating the terminal MIC, setting the terminal MIC as a secondary MIC; collecting a voice signal by using the main MIC, and collecting an environmental noise signal by using the auxiliary MIC; and the voice signal and the ambient noise The signal is subjected to audio processing to obtain a noise-reduced speech signal. In this way, after combining the headphone MIC and the terminal MIC, the noise reduction effect of the user using the headset to make a call is greatly improved; the hardware resources of the terminal itself (ie, the terminal MIC) are fully utilized without adding new hardware costs.

DRAWINGS

The drawings generally illustrate the various embodiments discussed herein by way of example and not limitation.

1 is a schematic structural diagram of hardware of an optional mobile terminal embodying various embodiments of the present invention;

2 is a schematic diagram of a wireless communication system of the mobile terminal shown in FIG. 1;

3 is a schematic flowchart of a noise reduction method according to Embodiment 1 of the present invention;

4 is a schematic flowchart of a noise reduction method according to Embodiment 2 of the present invention;

FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 3 of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention.

detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

A mobile terminal embodying various embodiments of the present invention will now be described with reference to the accompanying drawings. Follow-up The suffixes such as "module", "component" or "unit" used to denote elements are merely illustrative of the embodiments of the invention, and are not intended to be specific in themselves. Therefore, "module" and "component" can be used in combination.

The mobile terminal can be implemented in various forms. For example, the terminal described in the embodiments of the present invention may include, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a personal digital assistant (PDA, Personal Digital Assistant), a tablet (PAD), a portable multimedia player (PMP). , Portable Media Player), mobile devices of navigation devices and the like, and fixed terminals such as digital TVs, desktop computers, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, those skilled in the art will appreciate that configurations in accordance with embodiments of the present invention can be applied to fixed type terminals in addition to components that are specifically for mobile purposes.

FIG. 1 is a schematic diagram showing the hardware structure of an optional mobile terminal for implementing various embodiments of the present invention.

The mobile terminal 100 may include a wireless communication unit 110, an audio/video (A/V) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190. and many more. Figure 1 illustrates a mobile terminal having various components, but it should be understood that not all illustrated components are required to be implemented. More or fewer components can be implemented instead.

The wireless communication unit 110 specifically includes a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.

The A/V input unit 120 specifically includes a camera 121 and a microphone 122.

The sensing unit 140 specifically includes a proximity sensor 141.

The output unit 150 specifically includes a display unit 151, an audio output module 152, and an alarm unit 153.

The controller 180 specifically includes: a multimedia module 181.

The mobile terminal 100 as shown in FIG. 1 may be configured to utilize the number of transmissions via a frame or a packet It operates according to, for example, wired and wireless communication systems as well as satellite-based communication systems.

A communication system in which a mobile terminal is operable according to an embodiment of the present invention will now be described with reference to FIG.

Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and General Purpose Code Division Multiple Access (CDMA). UMTS (Universal Mobile Telecommunications System) (particularly, Long Term Evolution (LTE), Global System for Mobile Communications (GSM), and the like. As a non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.

Referring to FIG. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of base stations (BS) 270, a base station controller (BSC) 275, and a mobile switching center (MSC) 280. . The MSC 280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC 280 is also configured to interface with a BSC 275 that can be coupled to the base station 270 via a backhaul line. The backhaul line can be constructed in accordance with any of a number of well known interfaces including, for example, E1/T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. It will be appreciated that the system as shown in FIG. 2 can include multiple BSCs 275.

Based on the above-described hardware structure of the mobile terminal 100 and the communication system, various embodiments of the method of the present invention are proposed.

Terminals, such as mobile phones, tablet computers, etc., all have a headphone jack. When the headphone jack of the terminal is plugged into the earphone for a call, there is only one main microphone (MIC) on the earphone, and there is no noise reduction MIC, so that the call process is likely to cause noise and Insufficient collection of surrounding sound field environment information. However, the terminal itself has a main MIC, and some terminals have two main and two MICs; when talking with a headset, Only the main MIC on the earphone is used, and the MIC on the terminal is idle, which causes a great waste. Based on this, when talking with the headset, the MIC of the headset itself is used as the main MIC, and the MIC of the terminal itself is automatically switched to the noise reduction MIC. Thus, when the headset is used for conversation, both the main MIC and the noise reduction MIC are provided, and the noise suppression and the pair are suppressed. The collection of the ambient sound field will be better.

In the embodiment of the present invention, the earphone MIC and the terminal MIC are combined to work at the same time, thereby suppressing noise and improving the collection effect of the environmental sound field, and fully utilizing resources.

3 is a schematic flowchart of a noise reduction method according to Embodiment 1 of the present invention. The noise reduction method in this example is applied to a terminal. As shown in FIG. 3, the noise reduction method includes the following steps:

Step 301: Detect whether the earphone is connected to the terminal, and detect whether the terminal is in a call state.

In the embodiment of the present invention, before using the earphone, the user needs to perform the following operations: the terminal is powered on; the earphone is inserted into the terminal, and the call state is maintained. Specifically, the user makes a call to make the terminal in a call state; or the user answers the call, so that the terminal is in a call state.

In an embodiment, the headset can be a four-segment MIC headset. In a four-segment MIC earphone, there are also a speaker component and a microphone component. The horn component is used to play an audio signal, and the microphone component is used to collect an audio signal.

Here, the four-segment MIC headset has the following features:

1. The earphone plug is in the form of four sections;

2. There are at least 4 internal wires in the headphone cable;

3. The headset is a stereo headset.

Based on the foregoing earphone, detecting whether the earphone is connected to the terminal, specifically: detecting whether the earphone is inserted into the terminal.

In another embodiment, the headset can be a Bluetooth headset. In a Bluetooth headset, there are also speaker components and microphone components. The horn component is used to play an audio signal, and the microphone component is used to collect an audio signal.

Based on the foregoing earphone, detecting whether the earphone is connected to the terminal, specifically: detecting whether the earphone is connected to the terminal by using Bluetooth.

Step 302: When it is detected that the earphone is connected to the terminal, and the terminal is in a call state, the headset MIC in the working state is set as the main MIC; and the terminal MIC is activated, and the terminal MIC is set as the auxiliary MIC.

In the embodiment of the present invention, when it is detected that the earphone is connected to the terminal, and the terminal is in a call state, the earphone MIC is already in an active state. Set the headset MIC in working state as the main MIC.

At the same time, the terminal MIC is activated, and the terminal MIC is set as a secondary MIC. Here, the secondary MIC is used for noise reduction. Therefore, the secondary MIC is also referred to as a noise reduction MIC.

Step 303: Acquire a voice signal by using the primary MIC, and collect an ambient noise signal by using the secondary MIC.

In the embodiment of the present invention, the earphone MIC and the terminal MIC work simultaneously, the earphone MIC (main MIC) collects a voice signal, and the terminal MIC (secondary MIC) collects an environmental noise signal.

Step 304: Perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

In the embodiment of the present invention, the signals of the primary MIC and the secondary MIC are simultaneously sent to the audio module for audio processing, thereby denoising the voice signal to obtain a noise-reduced voice signal.

Here, the signals of the main MIC and the auxiliary MIC are simultaneously sent to the audio module for audio processing, including:

In the embodiment of the present invention, when the terminal ends the call, the primary MIC and the secondary MIC are turned off. Thereby, the terminal MIC (auxiliary MIC) can be made to perform normal work.

4 is a schematic flowchart of a noise reduction method according to Embodiment 2 of the present invention. The noise reduction method in this example is applied to a terminal. As shown in FIG. 4, the noise reduction method includes the following steps:

Step 401: Detect whether the detection pin of the earphone socket changes from a low level to a high level, and when the detection pin of the earphone socket changes from a low level to a high level, determine that the earphone is inserted into the terminal.

Here, the four-segment MIC headset has the following features:

1. The earphone plug is in the form of four sections;

2. There are at least 4 internal wires in the headphone cable;

3. The headset is a stereo headset.

After the terminal is turned on, the detection pin of the earphone socket is at a low level. After the four-stage MIC earphone is plugged in, the left or right channel of the earphone will connect the detection pin to it. At this time, the detection pin of the earphone socket is high. Level, when the detection module detects that the detection pin changes from low level to high level, it detects that a headset is inserted into the terminal.

Step 402: Detect whether the MIC pin of the earphone socket changes from a low level to a high level. When the MIC pin of the earphone socket changes from a low level to a high level, it is determined that the terminal is in a call state.

Before dialing the phone, the MIC pin on the headphone jack is low. After dialing the phone, the terminal is kept in the call state. At this time, the MIC pin of the headphone jack will have a DC offset of about 1V, and the detection module detects When the MIC pin level signal on the headphone jack changes from low level to high level, it is detected that the terminal is in a call state.

Step 403: When it is detected that the earphone is inserted into the terminal, and the terminal is in a call state, the headset MIC in the working state is set as the main MIC; and the terminal MIC is activated, and the terminal MIC is set as the auxiliary MIC.

In the embodiment of the present invention, the activation mode of the activation terminal MIC is different according to the type of the terminal MIC. In an embodiment, the MIC type is a micro-electromechanical system (MEMS) MIC, and the activation mode may be: pulling up the MEMS MIC in the terminal. The microphone's DC bias voltage (micbias) provides a 1V DC offset to the terminal MIC.

Step 404: Acquire a voice signal by using the primary MIC, and collect an environmental noise signal by using the secondary MIC.

Step 405: Perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

In the embodiment of the present invention, when the terminal ends the call, the primary MIC and the secondary MIC are turned off, so that the terminal MIC (secondary MIC) can achieve normal operation.

FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 3 of the present invention. As shown in FIG. 5, the terminal includes:

The detecting module 51 is configured to detect whether the earphone is connected to the terminal, and detect whether the terminal is in a call state;

The setting module 52 is configured to: when detecting that the earphone is connected to the terminal, and the terminal is in a call state, set the headset MIC in the working state as the main MIC; and activate the terminal MIC, and set the terminal MIC as the auxiliary MIC ;

The acquiring module 53 is configured to collect a voice signal by using the primary MIC, and collect an environmental noise signal by using the auxiliary MIC;

The audio module 54 is configured to perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

Those skilled in the art should understand that the implementation functions of the modules in the terminal shown in FIG. 5 can be understood by referring to the related description of the foregoing noise reduction method.

In practical applications, the functions implemented by each module in the terminal may be processed by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), or a digital signal processing located in the terminal. (Digital Signal Processor, DSP), or Field Programmable Gate Array (FPGA) implementation.

FIG. 6 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention. As shown in FIG. 6, the terminal includes:

The detecting module 61 is configured to detect whether the earphone is connected to the terminal, and detect whether the terminal is in a call state;

The setting module 62 is configured to: when detecting that the earphone is connected to the terminal, and the terminal is in the In the speech state, the headset MIC in the working state is set as the main MIC; and the terminal MIC is activated, and the terminal MIC is set as the auxiliary MIC;

The acquiring module 63 is configured to collect a voice signal by using the primary MIC, and collect an environmental noise signal by using the auxiliary MIC;

The audio module 64 is configured to perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.

The detecting module 61 is further configured to detect whether the earphone is inserted into the terminal; or use Bluetooth to detect whether the earphone is connected to the terminal.

The detecting module 61 includes:

The first detecting sub-module 611 is configured to detect whether the detecting pin of the earphone socket changes from a low level to a high level, and when the detecting pin of the earphone socket changes from a low level to a high level, determining that the earphone is inserted into the terminal;

The second detecting sub-module 612 is configured to detect whether the MIC pin of the earphone socket changes from a low level to a high level, and when the MIC pin of the earphone socket changes from a low level to a high level, determining that the terminal is in a call state.

The audio module 64 includes:

The signal amplification sub-module 641 is configured to perform signal amplification processing on the voice signal and the ambient noise signal;

The noise reduction sub-module 642 is configured to: cancel the noise signal in the voice signal according to the ambient noise signal, to obtain an analog noise-reduced voice signal;

The analog-to-digital conversion sub-module 643 is configured to perform analog-to-digital conversion on the analog noise-reduced speech signal to obtain a digital noise-reduction speech signal.

The terminal further includes:

A shutdown module (not shown) is configured to turn off the primary MIC and the secondary MIC when the terminal talk ends.

Those skilled in the art should understand that the implementation functions of each module and its sub-modules in the terminal shown in FIG. 6 can be understood by referring to the related description of the foregoing noise reduction method.

In practical applications, the functions implemented by each module and its sub-modules in the terminal may be implemented by a central processing unit (CPU) or a microprocessor (Micro Processor Unit, MPU) located in the terminal. Or a digital signal processor (DSP), or a Field Programmable Gate Array (FPGA).

In the embodiment of the present invention, if the terminal is implemented in the form of a software function module and sold or used as a stand-alone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, and the computer program is used to perform the noise reduction method of the embodiment of the present invention.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It should be understood that the flow can be implemented by computer program instructions Each of the processes and/or blocks in the figures and/or block diagrams, and combinations of the flows and/or blocks in the flowcharts and/or block diagrams. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

The technical solution of the embodiment of the present invention, when detecting that the earphone is connected to the terminal, and the terminal is in a call state, setting the headset MIC in the working state as the main MIC; and activating the terminal MIC as the auxiliary MIC; using the main MIC The voice signal is collected, and the ambient noise signal is collected by using the auxiliary MIC; the voice signal and the environmental noise signal are processed by audio to obtain a noise-reduced voice signal. In this way, the noise reduction effect of the user using the headset to make a call is greatly improved; the hardware resources of the terminal itself (ie, the terminal MIC) are fully utilized without adding new hardware costs.

Claims

A noise reduction method, the method comprising:

Detecting whether the headset is connected to the terminal, and detecting whether the terminal is in a call state;

When it is detected that the earphone is connected to the terminal, and the terminal is in a call state, the headset microphone MIC in the working state is set as the main MIC; and the terminal MIC is activated, and the terminal MIC is set as the auxiliary MIC;

Acquiring a voice signal by using the main MIC, and collecting an environmental noise signal by using the auxiliary MIC;

Audio processing is performed on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.
The noise reduction method according to claim 1, wherein the detecting whether the earphone is connected to the terminal comprises:

Detect whether the headset is plugged into the terminal; or,

Use Bluetooth to detect if the headset is connected to the terminal.
The noise reduction method according to claim 2, wherein the detecting whether the earphone is connected to the terminal and detecting whether the terminal is in a call state comprises:

Detecting whether the detecting pin of the earphone socket changes from a low level to a high level, and when the detecting pin of the earphone socket changes from a low level to a high level, determining that the earphone is inserted into the terminal;

Detect whether the MIC pin of the earphone socket changes from a low level to a high level. When the MIC pin of the earphone socket changes from a low level to a high level, it is determined that the terminal is in a call state.
The noise reduction method according to claim 1, wherein said performing audio processing on said voice signal and said ambient noise signal comprises:

Performing signal amplification processing on the voice signal and the ambient noise signal;

Acquiring the noise signal in the voice signal according to the ambient noise signal to obtain an analog noise-reduced voice signal;

Performing analog-to-digital conversion on the analog noise-reduced speech signal to obtain a digital noise-reduction speech signal.
The noise reduction method according to any one of claims 1 to 4, wherein the method further comprises:

When the terminal talk ends, the primary MIC and the secondary MIC are turned off.
A terminal, the terminal comprising:

The detecting module is configured to detect whether the earphone is connected to the terminal, and detect whether the terminal is in a call state;

a setting module configured to: when detecting that the earphone is connected to the terminal, and the terminal is in a call state, setting the headset MIC in the working state as a main MIC; and activating the terminal MIC, setting the terminal MIC as a secondary MIC;

An acquisition module, configured to collect a voice signal by using the primary MIC, and collect an ambient noise signal by using the auxiliary MIC;

And an audio module configured to perform audio processing on the voice signal and the ambient noise signal to obtain a noise-reduced voice signal.
The terminal according to claim 6, wherein the detecting module is further configured to detect whether the earphone is inserted into the terminal; or use Bluetooth to detect whether the earphone is connected to the terminal.
The terminal of claim 7, wherein the detecting module comprises:

The first detecting sub-module is configured to detect whether the detecting pin of the earphone socket changes from a low level to a high level, and when the detecting pin of the earphone socket changes from a low level to a high level, determining that the earphone is inserted into the terminal;

The second detecting submodule is configured to detect whether the MIC pin of the earphone socket changes from a low level to a high level, and when the MIC pin of the earphone socket changes from a low level to a high level, determining that the terminal is in a call state.
The terminal of claim 6, wherein the audio module comprises:

a signal amplification submodule configured to perform the speech signal and the ambient noise signal Signal amplification processing;

a noise reduction sub-module configured to cancel a noise signal in the voice signal according to the ambient noise signal to obtain an analog noise-reduced voice signal;

And an analog-to-digital conversion submodule configured to perform analog-to-digital conversion on the analog noise-reduced speech signal to obtain a digital noise-reduction speech signal.
The terminal according to any one of claims 6 to 9, wherein the terminal further comprises:

The module is closed, configured to turn off the primary MIC and the secondary MIC when the terminal is over.
A computer storage medium having stored therein computer executable instructions configured to perform the noise reduction method of any of claims 1-5.