CN106331359B - A kind of speech signal collection method, device and terminal - Google Patents

Abstract

The invention discloses a voice signal collection method, device and terminal. The voice signal collection method includes: acquiring a first audio signal and a second audio signal. The first audio signal is acquired by a first audio acquisition unit for conversation voice, The second audio signal is collected by the second audio acquisition unit for environmental noise; judge whether the preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal; if so, then The attribute parameters of the second audio collection unit are adjusted so that the second audio collection unit collects the call voice signal. The voice signal collection method mentioned above can collect the voice of the caller through the secondary microphone for collecting environmental noise when the main microphone for collecting the voice of the caller is abnormal, so as to ensure the normal progress of the call, with simple operation and high flexibility.

Description

A voice signal collection method, device and terminal

technical field

The present invention relates to the technical field of mobile communication, in particular to a voice signal collection method, device and terminal.

Background technique

With the continuous development of terminal technology and the popularization of mobile phones, users rely more and more on mobile phones, and the most commonly used function is the voice call function.

When the two parties make a voice call, the mobile phones of both parties will collect the sound through the built-in microphone, and convert the collected sound into an audio signal and send it to the other party. play. In order to facilitate sound collection, the microphone is generally installed with a sound collection hole, and the sound can be directly transmitted to the microphone through the sound collection hole, which improves the sensitivity of collection. However, since the microphone is usually installed at the end of the mobile phone, the user's fingers often block the sound collection hole when holding the mobile phone, thereby affecting the collection work of the microphone and making it difficult to ensure the normal voice communication of the user.

Contents of the invention

The purpose of the present invention is to provide a voice signal collection method, device and terminal to solve the technical problem that the existing mobile phone is easy to affect the call because the sound collection hole of the main microphone is blocked.

In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:

A method for collecting voice signals, comprising:

Acquiring a first audio signal and a second audio signal, the first audio signal is collected by the first audio collection unit for conversation voice, and the second audio signal is collected by the second audio collection unit for environmental noise;

judging whether a preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal;

If yes, adjust the attribute parameters of the second audio collection unit, so that the second audio collection unit collects the call voice signal.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A voice signal acquisition device, comprising:

The first audio collection unit is used to obtain the first audio signal, and the first audio signal is collected for the call voice;

The second audio acquisition unit is configured to acquire a second audio signal, and the second audio signal is collected for environmental noise;

a judging unit, configured to judge whether a preset adjustment condition is met according to the first amplitude of the first audio signal and the second amplitude of the second audio signal;

The adjustment unit is configured to, if yes, adjust the attribute parameters of the second audio collection unit, so that the second audio collection unit collects the call voice signal.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A terminal, which includes a main microphone and an auxiliary microphone, the main microphone is used to collect call voice to obtain a first audio signal, and the auxiliary microphone is used to collect environmental noise to obtain a second audio signal;

When the first amplitude of the first audio signal and the second amplitude of the second audio signal meet a preset adjustment condition, the secondary microphone replaces the primary microphone to collect the call voice signal.

The voice signal collection method, device and terminal of the present invention obtain the first audio signal and the second audio signal, the first audio signal is collected by the first audio collection unit for the call voice, and the second audio signal is collected by the second audio signal The second audio acquisition unit collects the environmental noise, and then judges whether the preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal, and if so, collects the second audio The attribute parameters of the unit are adjusted so that the second audio acquisition unit collects the voice signal of the conversation, so that when the main microphone for collecting the voice of the conversation is abnormal, the voice of the conversation can be collected through the secondary microphone for collecting environmental noise , to ensure the normal progress of the call, simple operation and high flexibility.

Description of drawings

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Fig. 1 is a schematic flow chart of the speech signal collection method that the embodiment of the present invention provides;

Fig. 2 is a schematic flow chart of the voice signal collection method provided by the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a voice signal acquisition device provided by an embodiment of the present invention;

Fig. 4 is another structural schematic diagram of the voice signal acquisition device provided by the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

Embodiments of the present invention provide a voice signal collection method, device, and terminal. The details will be described respectively below. It should be noted that the serial numbers of the following embodiments are not intended to limit the order of priority of the embodiments.

first embodiment

This embodiment will be described from the perspective of a voice signal acquisition device, and the voice signal acquisition device may be integrated into a device such as a mobile phone, a tablet computer, or a notebook computer.

Referring to Fig. 1, Fig. 1 specifically describes the voice signal collection method provided by the first embodiment of the present invention, which may include:

S101. Acquire a first audio signal and a second audio signal, the first audio signal is collected by the first audio collection unit for call voice, and the second audio signal is collected by the second audio collection unit for environmental noise.

In this embodiment, the first audio signal mainly includes human voice, and the second audio signal mainly includes environmental noise. By collecting the second audio signal, the environmental noise in the first audio signal can be filtered to obtain a clearer audio signal. human voice. The first audio collection unit and the second audio collection unit may include microphones, and the specific number may be determined according to actual needs. For example, the first audio collection unit may include 2 or 3 microphones to form a microphone array.

Usually, for better collecting ambient noise or conversation voice, the setting of attribute parameter in this first audio frequency collection unit and the second audio frequency collection unit is different, such as the gain (amplification) of the first audio collection unit that is used for main sound pickup multiple) is obviously greater than the gain of the second audio acquisition unit used for noise reference, etc., in addition, the installation positions of the first audio acquisition unit and the second audio acquisition unit are also different, such as considering that the user catches the According to the habit of holding the terminal, the first audio collection unit is generally installed at the bottom of the terminal, and the second audio collection unit is generally installed at the top of the terminal.

S102. Determine whether the preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal. If it is satisfied, the following step S103 can be performed; if not, the above-mentioned adjustment condition can be performed. Step S101.

In this embodiment, the preset adjustment condition may be determined according to actual requirements, and the first amplitude and the second amplitude are mainly used to reflect signal strength. Usually, the signal strength of the caller's voice collected by the first audio collection unit is greater than the signal strength of the ambient noise collected by the second audio collection unit.

For example, the above step S102 may specifically include:

calculating the difference between the second amplitude of the second audio signal and the first amplitude of the first audio signal;

If the difference is greater than the preset difference, it is judged that the preset adjustment condition is met;

If the difference is not greater than the preset difference, it is determined that the preset adjustment condition is not met.

In this embodiment, the preset difference can be determined according to actual needs, and it can be an estimated value or an empirical value. When the second amplitude is greater than the first amplitude, and the difference between the second amplitude and the first amplitude is greater than the preset difference, it means that the first audio acquisition unit is blocked or abnormal, so that the first audio The call voice signal collected by the acquisition unit will be very weak and difficult to meet the call requirements. At this time, it can be judged that the preset adjustment condition is met.

It should be noted that if the abnormal situation occurs in a short period of time, for example, the user's finger accidentally blocks the first audio collection unit and then removes it, in this case, the first audio collection unit can continue to be used to collect There is no need to adjust the voice of the conversation. Therefore, in order to find out whether the abnormal situation occurs for a long time or for a short time, the first audio signal and the second audio signal can be signal segments collected within a certain period of time. At this time, Only when the difference between the second amplitude and the first amplitude at each moment in the signal segment meets the preset adjustment conditions, it indicates that the abnormal situation has occurred for a long time, and the preset adjustment can be judged condition.

S103. Adjust the attribute parameters of the second audio collection unit, so that the second audio collection unit collects the call voice signal.

For example, the above step S103 may specifically include:

Get the preset threshold;

The attribute parameters of the second audio collection unit are adjusted by using the preset threshold value.

In this embodiment, the preset threshold may be determined according to actual needs. There are many ways to adjust the attribute parameter. For example, the value of the attribute parameter can be directly adjusted to the preset threshold, or the value of the attribute parameter can be adjusted to N times the preset threshold, and so on. By using the preset threshold value to adjust the attribute parameters of the second audio collection unit, the second audio collection unit used for noise reference can have the main sound pickup function.

Wherein, the attribute parameter may include a gain value. At this time, the above-mentioned step of "using the preset threshold value to adjust the attribute parameter of the second audio collection unit" may specifically include:

The gain value of the second audio collection unit is adjusted to a preset threshold value.

In this embodiment, by adjusting the gain value to the preset threshold value, the relationship between the audio signal acquired by the second audio acquisition unit and the noise can be changed to obtain a suitable frequency response curve and reduce the distortion of the sound, so that The second audio collection unit is suitable for collecting the voice of a talking person, that is, it has a main sound pickup function.

As can be seen from the above, the voice signal collection method provided in this embodiment obtains the first audio signal and the second audio signal, the first audio signal is collected by the first audio collection unit for the call voice, and the second audio signal is collected by the second audio signal The second audio acquisition unit collects the environmental noise, and then judges whether the preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal, and if so, collects the second audio The attribute parameters of the unit are adjusted so that the second audio acquisition unit collects the voice signal of the call, so that when the main microphone that collects the voice of the caller is abnormal, the secondary microphone that collects the ambient noise can be called to acquire the voice signal of the caller. Sound, to ensure the normal progress of the call, simple operation, high flexibility.

second embodiment

According to the method described in Embodiment 1, an example will be given below for further detailed description.

In this embodiment, it will be described in detail by taking the voice signal collection device integrated in a terminal as an example.

As shown in Figure 2, a method for collecting voice signals, the specific process can be as follows:

S201. The terminal acquires a first audio signal and a second audio signal, the first audio signal is collected by the first audio collection unit for call voice, and the second audio signal is collected by the second audio collection unit for environmental noise.

For example, when a user talks to a friend through the terminal, the voice of the call can be collected through the main microphone (first audio collection unit) installed at the bottom of the terminal to obtain the first audio signal, and the second audio signal can be obtained through the secondary microphone (second audio collection unit) installed at the top of the terminal. The collecting unit) collects the ambient noise to obtain the second audio signal.

S202. The terminal acquires the amplitudes of the first audio signal and the second audio signal respectively, to obtain the first amplitude and the second amplitude.

For example, if the first audio signal and the second audio signal are signal segments collected within a specified time period, the terminal may respectively acquire the amplitudes of the first audio signal and the second audio signal at each moment within the specified time period.

S203. The terminal judges whether the second magnitude is greater than the first magnitude. If yes, the following step S204 may be performed. If not, no operation may be performed.

For example, the terminal can compare and analyze the second amplitude value corresponding to any moment with the first amplitude value, and only when the second amplitude value corresponding to each moment within the specified time period is greater than the first amplitude value, it can judge that the second amplitude value is greater than the first amplitude value. The second magnitude is greater than the first magnitude.

S204. The terminal calculates a difference between the first amplitude and the second amplitude, and when the difference is greater than a preset difference, the terminal adjusts the gain value of the second audio collection unit to a preset threshold.

For example, the terminal can calculate the difference between the second amplitude and the first amplitude corresponding to any moment, and compare and analyze each difference with the preset difference. When all the differences are greater than the preset difference When the value is set, the terminal can increase the gain value of the main microphone installed on the top, so that the gain value reaches the preset threshold value, thereby adjusting the frequency response curve, so that the main microphone is suitable for collecting human voices.

As can be seen from the above, in the voice signal collection method provided in this embodiment, the terminal obtains the first audio signal and the second audio signal, wherein the first audio signal is obtained by the first audio collection unit for the call voice, and the second audio signal It is collected by the second audio acquisition unit for environmental noise, and then the amplitudes of the first audio signal and the second audio signal are obtained respectively to obtain the first amplitude and the second amplitude, and then it is judged whether the second amplitude is greater than the first amplitude, if so, calculate the difference between the first amplitude and the second amplitude, and when the difference is greater than the preset difference, the terminal adjusts the gain value of the second audio acquisition unit To the preset threshold, compared with the prior art, by changing the attribute parameters of the second audio acquisition unit when the first audio acquisition unit is abnormal, the second audio acquisition unit is used to collect the call voice The purpose is to ensure the normal collection of call voice, simple operation and high flexibility.

third embodiment

On the basis of the methods described in Embodiment 1 and Embodiment 2, this embodiment will further describe from the perspective of a voice signal acquisition device, please refer to Figure 3, which specifically describes the voice signal provided by the third embodiment of the present invention The collection device may include: a first audio collection unit 10, a second audio collection unit 20, a judgment unit 30 and an adjustment unit 40, wherein:

(1) the first audio collection unit 10

The first audio collection unit 10 is configured to obtain a first audio signal, and the first audio signal is collected for a call voice.

(2) second audio collection unit 20

The second audio collection unit 20 is configured to obtain a second audio signal, and the second audio signal is obtained by collecting ambient noise.

In this embodiment, the first audio signal mainly includes human voice, and the second audio signal mainly includes environmental noise. By collecting the second audio signal, the environmental noise in the first audio signal can be filtered to obtain a clearer audio signal. Talking voice. The first audio collection unit 10 and the second audio collection unit 20 may include microphones, and the specific number may be determined according to actual needs. For example, the first audio collection unit 10 may include 2 or 3 microphones to form a microphone array.

Usually, in order to better collect ambient noise or conversation voice, the setting of attribute parameters in the first audio collection unit 10 and the second audio collection unit 20 is different, such as the first audio collection unit 10 used for main sound pickup The gain (magnification) is obviously greater than the gain of the second audio acquisition unit 20 used for noise reference, etc. In addition, the installation positions of the first audio acquisition unit 10 and the second audio acquisition unit 20 are also different, such as Considering the user's habit of holding the terminal when talking, the first audio collection unit 10 is generally installed at the bottom of the terminal, and the second audio collection unit 20 is generally installed at the top of the terminal.

(3) judging unit 30

The judging unit 30 is configured to judge whether a preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal.

In this embodiment, the preset adjustment condition may be determined according to actual requirements, and the first amplitude and the second amplitude are mainly used to reflect signal strength. Usually, the signal strength of the caller's voice collected by the first audio collection unit is greater than the signal strength of the ambient noise collected by the second audio collection unit.

For example, referring to FIG. 4, the judging unit 30 may specifically include a calculation subunit 31 and a judging subunit 32, wherein:

A calculating subunit 31, configured to calculate the difference between the second amplitude of the second audio signal and the first amplitude of the first audio signal;

The judging subunit 32 is configured to judge that the preset adjustment condition is satisfied if the difference is greater than the preset difference; and judge that the preset adjustment condition is not satisfied if the difference is not greater than the preset difference.

In this embodiment, the preset difference can be determined according to actual needs, and it can be an estimated value or an empirical value. When the second amplitude value is greater than the first amplitude value, and the difference between the second amplitude value and the first amplitude value is greater than the preset difference value, it indicates that the first audio collection unit 10 is blocked or abnormal, so that the first audio acquisition unit 10 is used to The call voice signal collected by the audio collection unit 10 will be very weak and difficult to meet the call requirements. At this time, it can be determined that the preset adjustment condition is met.

It should be noted that if the abnormal situation occurs in a short time, for example, the user's finger accidentally blocks the first audio collection unit and then removes it. In this case, the first audio collection unit 10 can continue to be used. There is no need to perform an adjustment operation to collect the conversation voice. Therefore, in order to find out whether the abnormal situation occurs for a long time or for a short time, the first audio signal and the second audio signal can be signal segments collected within a certain period of time. At this time , only when the difference between the second amplitude and the first amplitude at each moment in the signal segment satisfies the preset adjustment condition, it indicates that the abnormal situation has occurred for a long time, and the judging subunit 32 can It is judged that the preset adjustment condition is met.

(4) Adjustment unit 40

The adjustment unit 40 is configured to, if yes, adjust the attribute parameters of the second audio collection unit, so that the second audio collection unit collects the call voice signal.

For example, the adjustment unit 40 may specifically include an acquisition subunit 41 and an adjustment subunit 42, wherein:

An acquisition subunit 41, configured to acquire a preset threshold;

The adjustment subunit 42 is configured to use the preset threshold value to adjust the attribute parameters of the second audio collection unit.

In this embodiment, the preset threshold may be determined according to actual needs. There are many ways to adjust the attribute parameter. For example, the adjustment unit 40 can directly adjust the value of the attribute parameter to the preset threshold value, or adjust the value of the attribute parameter to N times the preset threshold value. wait. The adjustment unit 40 adjusts the attribute parameters of the second audio collection unit 20 by using the preset threshold value, so that the second audio collection unit 20 used for noise reference can have the main sound pickup function.

For example, the attribute parameter may include a gain value. At this time, the adjustment subunit 42 may specifically be used for:

The gain value of the second audio collection unit is adjusted to a preset threshold value.

In this embodiment, by adjusting the gain value to the preset threshold value, the relationship between the audio signal acquired by the second audio acquisition unit and the noise can be changed, an appropriate frequency response curve can be obtained, and sound distortion can be reduced.

During specific implementation, each of the above units may be implemented as an independent entity, or may be combined arbitrarily as the same or several entities. The specific implementation of each of the above units may refer to the previous method embodiments, and will not be repeated here.

As can be seen from the above, the voice signal acquisition device provided in this embodiment obtains the first audio signal and the second audio signal by using the first audio acquisition unit 10 and the second audio acquisition unit 20 respectively, and the first audio signal is aimed at the call voice acquisition. Obtained, the second audio signal is collected for environmental noise, and then, the judging unit 30 judges whether the preset adjustment condition is satisfied according to the first amplitude of the first audio signal and the second amplitude of the second audio signal. , then the adjustment unit 40 adjusts the attribute parameters of the second audio collection unit 20, so that the second audio collection unit 20 collects the call voice signal, so that when the main microphone for collecting the caller’s voice is abnormal, The voice of the caller can be collected through the secondary microphone that collects the ambient noise to ensure the normal progress of the call, with simple operation and high flexibility.

Fourth embodiment

Correspondingly, the embodiment of the present invention also provides a terminal. As shown in FIG. 5, the terminal may include a radio frequency (RF, Radio Frequency) circuit 501, a memory 502 including one or more computer-readable storage media, and an input unit 503 , a display unit 504 , a sensor 505 , an audio circuit 505 , a wireless fidelity (WiFi, Wireless Fidelity) module 507 , a processor 508 including one or more processing cores, and a power supply 509 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and may include more or less components than those shown in the figure, or combine some components, or arrange different components. in:

The RF circuit 501 can be used for sending and receiving information or receiving and sending signals during a call. In particular, after receiving the downlink information of the base station, it is handed over to one or more processors 508 for processing; in addition, the data related to the uplink is sent to the base station . Generally, the RF circuit 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM, Subscriber Identity Module) card, a transceiver, a coupler, a low noise amplifier (LNA, Low Noise Amplifier), duplexer, etc. In addition, the RF circuit 501 can also communicate with networks and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile Communications (GSM, Global System of Mobile communication), General Packet Radio Service (GPRS, General Packet Radio Service), Code Division Multiple Access (CDMA, Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), Long Term Evolution (LTE, Long Term Evolution), email, Short Message Service (SMS, Short Messaging Service), etc.

The memory 502 can be used to store software programs and modules, and the processor 508 executes various functional applications and data processing by running the software programs and modules stored in the memory 502 . The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of the terminal (such as audio data, phonebook, etc.) and the like. In addition, the memory 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices. Correspondingly, the memory 502 may further include a memory controller to provide access to the memory 502 by the processor 508 and the input unit 503 .

The input unit 503 can be used to receive input numbers or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, in a specific embodiment, the input unit 503 may include a touch-sensitive surface and other input devices. A touch-sensitive surface, also known as a touch display or trackpad, collects user touch operations on or near it (for example, the user uses a finger, stylus, etc. any suitable object or accessory on the touch-sensitive surface or on the touch-sensitive Operation near the surface), and drive the corresponding connection device according to the preset program. Optionally, the touch-sensitive surface may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to to the processor 508, and can receive and execute commands sent by the processor 508. In addition, touch-sensitive surfaces can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to touch-sensitive surfaces, the input unit 503 may also include other input devices. Specifically, other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 504 can be used to display information input by or provided to the user and various graphical user interfaces of the terminal. These graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof. The display unit 504 may include a display panel. Optionally, the display panel may be configured in the form of a liquid crystal display (LCD, Liquid Crystal Display), an organic light-emitting diode (OLED, Organic Light-Emitting Diode), and the like. Further, the touch-sensitive surface can cover the display panel. When the touch-sensitive surface detects a touch operation on or near it, it is sent to the processor 508 to determine the type of the touch event, and then the processor 508 displays on the display according to the type of the touch event. The corresponding visual output is provided on the panel. Although in FIG. 5, the touch-sensitive surface and the display panel are used as two independent components to realize the input and input functions, in some embodiments, the touch-sensitive surface and the display panel can be integrated to realize the input and output functions.

The terminal may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and/or the backlight when the terminal moves to the ear . As a kind of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the attitude of mobile phones (such as horizontal and vertical screen switching, related Games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. repeat.

The audio circuit 506, the speaker, and the microphone can provide an audio interface between the user and the terminal. The audio circuit 506 can transmit the electrical signal converted from the received audio data to the speaker, and the speaker converts it into an audio signal for output; on the other hand, the microphone converts the collected audio signal into an electrical signal, which is converted by the audio circuit 506 After being processed by the audio data output processor 508, the audio data is sent to another terminal through the RF circuit 501, or the audio data is output to the memory 502 for further processing. The audio circuit 506 may also include an earplug jack to provide communication between an external earphone and the terminal.

WiFi is a short-distance wireless transmission technology. The terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 507, which provides users with wireless broadband Internet access. Although FIG. 5 shows the WiFi module 507, it can be understood that it is not a necessary component of the terminal, and can be completely omitted as required without changing the essence of the invention.

The processor 508 is the control center of the terminal, and uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory 502, and calling data stored in the memory 502, execution Various functions and processing data of the terminal, so as to monitor the mobile phone as a whole. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 508 .

The terminal also includes a power supply 509 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 508 through a power management system, so that functions such as charging, discharging, and power consumption management can be implemented through the power management system. The power supply 509 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

Although not shown, the terminal may further include a primary microphone and a secondary microphone, the primary microphone is used to collect call voice to obtain a first audio signal, and the secondary microphone is used to collect ambient noise to obtain a second audio signal. When the first amplitude of the first audio signal and the second amplitude of the second audio signal meet a preset adjustment condition, the auxiliary microphone replaces the main microphone to collect the voice signal of the call.

In addition, the terminal may also include a camera, a Bluetooth module, etc., which will not be repeated here. Specifically, in this embodiment, the processor 508 in the terminal loads the executable file corresponding to the process of one or more application programs into the memory 502 according to the following instructions, and the processor 508 runs the executable file stored in the memory. 502 in order to achieve various functions:

Controlling the primary microphone to collect call voice to obtain a first audio signal, and controlling the secondary microphone to collect ambient noise to obtain a second audio signal;

When the first amplitude of the first audio signal and the second amplitude of the second audio signal meet the preset adjustment condition, the secondary microphone is controlled to replace the main microphone to collect the call voice signal.

Preferably, before the processor controls the secondary microphone to replace the primary microphone to collect the call voice signal, it may also include:

calculating the difference between the second amplitude of the second audio signal and the first amplitude of the first audio signal;

If the difference is greater than the preset difference, it is judged that the preset adjustment condition is met;

If the difference is not greater than the preset difference, it is determined that the preset adjustment condition is not met.

Preferably, the attribute parameter includes a gain value, and the processor controls the secondary microphone to replace the primary microphone to collect the voice signal of the call, including:

Get the preset threshold;

The attribute parameters of the secondary microphone are adjusted by using the preset threshold value.

Preferably, the processor uses the preset threshold to adjust the attribute parameters of the secondary microphone, including:

Adjust the gain value of the secondary microphone to the preset threshold.

For the implementation methods of the above operations, reference may be made to the foregoing embodiments, and details are not repeated here.

The terminal can achieve the effective effects that can be achieved by any voice signal acquisition device provided by the embodiments of the present invention. For details, refer to the previous embodiments, which will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: Read Only Memory (ROM, Read Only Memory), Random Access Memory (RAM, Random Access Memory), disk or CD, etc.

Above, a kind of voice signal collection method, device and terminal provided by the embodiment of the present invention have been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used to help Understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation of the invention.

Claims (5)

1. a kind of speech signal collection method, it is characterised in that including：

The first audio signal and the second audio signal of collection in certain time length are obtained, first audio signal is by the first sound Frequency collecting unit is directed to the signal segment that call voice is collected, and second audio signal is by the second audio collection unit pin The signal segment collected to environmental noise；

Calculate each moment in the certain time length, the second amplitude of second audio signal and the first of the first audio signal Difference between amplitude；

If the difference at each moment is all higher than preset difference value, pre-set threshold value is obtained, and using the pre-set threshold value to described the The property parameters of two audio collection units are adjusted.

2. speech signal collection method according to claim 1, it is characterised in that the property parameters include yield value, It is described using the pre-set threshold value property parameters of the second audio collection unit are adjusted including：

The yield value of the second audio collection unit is adjusted to pre-set threshold value.

3. a kind of voice signal acquisition device, it is characterised in that including：

First audio collection unit, the first audio signal gathered for obtaining in certain time length, first audio signal is The signal segment collected for call voice；

Second audio collection unit, the second audio signal gathered for obtaining in the certain time length, the second audio letter Number it is the signal segment collected for environmental noise；

Judging unit, is specifically included：

Computation subunit, for calculating each moment in the certain time length, the second amplitude of second audio signal and Difference between the first amplitude of one audio signal；Judgment sub-unit, if the difference for each moment is all higher than preset difference value, Then judge to meet default regularization condition；If the difference at each moment is not all higher than preset difference value, judgement is unsatisfactory for default tune Shelf-regulating Conditions；

Adjustment unit, is specifically included：

Subelement is obtained, if for judging to meet default regularization condition, obtaining pre-set threshold value；Subelement is adjusted, for utilizing The pre-set threshold value is adjusted to the property parameters of the second audio collection unit.

4. voice signal acquisition device according to claim 3, it is characterised in that the property parameters include yield value, It is described adjustment subelement specifically for：

The yield value of the second audio collection unit is adjusted to pre-set threshold value.

5. a kind of computer-readable recording medium, its computer program that is stored with, wherein, when the computer program is in computer During upper operation so that the computer performs the method as described in claim 1.