CN113889067A

CN113889067A - Noise reduction method and device, electronic equipment and readable storage medium

Info

Publication number: CN113889067A
Application number: CN202111115467.7A
Authority: CN
Inventors: 张嘉成; 许驹
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-04

Abstract

The application discloses a noise reduction method, a noise reduction device, electronic equipment and a readable storage medium, and belongs to the technical field of communication. The method comprises the following steps: acquiring a first compensation audio signal corresponding to a target power level according to the target power level, wherein the target power level is a power level adopted by a communication system during working; and outputting a first compensation audio signal, and carrying out noise reduction processing on a first noise signal according to the first compensation audio signal, wherein the first noise signal is a noise signal generated when the communication system works at a target power level.

Description

Noise reduction method and device, electronic equipment and readable storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a noise reduction method and device, electronic equipment and a readable storage medium.

Background

With the continuous development of communication technology, more and more functional modules are arranged in electronic equipment, and the interference among the functional modules is stronger and stronger. For example, when a Power Amplifier PA (Power Amplifier) of a Global System for Mobile Communications (GSM) Power Amplifier of an electronic device operates, GSM capacitive sound is generated, and the GSM capacitive sound affects normal operation of a receiver.

At present, in the design process of the electronic device, manufacturers of the electronic device usually lay the GSM out of the forbidden region of the receiver to reduce the influence of GSM capacitive sound on the receiver.

However, according to the above method, since the layout of the PA is outside the forbidden area of the receiver, the influence of the GSM capacitive sound on the receiver can be reduced, and thus, the layout flexibility of the functional modules in the electronic device may be poor.

Disclosure of Invention

An object of the embodiments of the present application is to provide a noise reduction method, apparatus, electronic device, and readable storage medium, which can solve the problem of poor layout flexibility of functional modules in the electronic device.

In a first aspect, an embodiment of the present application provides a noise reduction method, where the method includes: acquiring a first compensation audio signal corresponding to a target power level according to the target power level, wherein the target power level is a power level adopted by a communication system during working; outputting a first compensated audio signal; and carrying out noise reduction processing on a first noise signal according to the first compensation audio signal, wherein the first noise signal is a noise signal generated when the communication system works at a target power level.

In a second aspect, an embodiment of the present application provides a noise reduction apparatus, including an obtaining module, an output module, and a processing module; the acquisition module is used for acquiring a first compensation audio signal corresponding to a target power grade according to the target power grade, wherein the target power grade is a power grade adopted when the communication system works; an output module for outputting a first compensated audio signal; and the processing module is used for carrying out noise reduction processing on the first noise signal according to the first compensation audio signal, wherein the first noise signal is generated when the communication system works at a target power level.

In a third aspect, embodiments of the present application provide an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.

In a fifth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.

In the embodiment of the application, a first compensation audio signal corresponding to a target power level can be obtained according to the target power level, wherein the target power level is a power level adopted by a communication system during working; and outputting a first compensation audio signal, and performing noise reduction processing on a first noise signal according to the first compensation audio signal, wherein the first noise signal is a noise signal generated when the communication system works at a target power level. According to the scheme, the electronic equipment can acquire the compensation audio signal corresponding to the power grade according to the power grade adopted by the communication system in the electronic equipment during working, output the compensation audio signal and perform noise reduction processing on the noise signal generated by the communication system during working at the power grade according to the compensation audio signal, so that the noise interference among the functional modules can be reduced without considering the layout condition of the functional modules in the electronic equipment, and the flexibility of the layout of the functional modules in the electronic equipment can be improved.

Drawings

Fig. 1 is a schematic diagram of a noise reduction method provided in an embodiment of the present application;

fig. 2 is a schematic diagram illustrating a comparison between a first noise signal and a first compensated audio signal in a noise reduction method according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a first compensated audio signal adjusted according to a time slot in a noise reduction method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a process of acquiring a second noise signal in the noise reduction method according to the embodiment of the present application;

FIG. 5 is a schematic view of a noise reduction apparatus provided in an embodiment of the present application;

fig. 6 is a schematic diagram of an electronic device provided in an embodiment of the present application;

fig. 7 is a hardware schematic diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The noise reduction method, apparatus, electronic device and readable storage medium provided in the embodiments of the present application are described in detail with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

The noise reduction method provided by the embodiment of the application can be applied to a scene of reducing noise interference among all functional modules of the electronic equipment.

For example, taking reduction of noise interference of a GSM PA of an electronic device to a receiver as an example, when the GSM PA operates, GSM capacitive sound is generated, and the electronic device may obtain a compensation audio signal (e.g., a first compensation audio signal in this embodiment of the present application) corresponding to a power level (e.g., a target power level in this embodiment) adopted when the GSM operates, and output the compensation audio signal to eliminate the GSM capacitive sound, thereby reducing noise interference of the GSM PA of the electronic device to the receiver. Therefore, as the GSM does not need to be arranged outside the forbidden region of the telephone receiver like the traditional technology, the noise interference of the GSM PA to the telephone receiver can be reduced, and the flexibility of the arrangement of the functional modules in the electronic equipment can be improved.

It can be understood that, in the embodiment of the present application, the electronic device may execute the noise reduction method provided in the embodiment of the present application during a call (e.g., a voice call, a video call).

Specifically, in the passing process, if the communication system adopts one power level, the electronic device may acquire a first compensation signal and continuously output the first compensation signal; if the communication system adopts a plurality of power levels, the electronic device reacquires the first compensation signal corresponding to the switched power level after switching the power level once, and outputs the first compensation signal.

In conjunction with fig. 1, an embodiment of the present application provides a noise reduction method, which may include steps 101 to 103 described below. The following is an exemplary description taking the electronic device as an example to perform the method.

Step 101, the electronic device obtains a first compensation audio signal corresponding to a target power level according to the target power level.

Step 102, the electronic device outputs a first compensated audio signal.

And 103, the electronic equipment performs noise reduction processing on the first noise signal according to the first compensation audio signal.

In this embodiment, the first noise signal may be a noise signal generated when the communication system operates at a target power level.

In the embodiment of the present application, the target power level is a power level adopted when a communication system in the electronic device operates. Specifically, the target power level is a power level currently used by the communication system.

Optionally, in this embodiment of the application, the electronic device outputting the first compensated audio signal may play the first compensated audio signal for the electronic device.

In the embodiment of the application, the electronic equipment can acquire a first compensation audio signal corresponding to the target power grade according to the target power grade in the call process; and outputting the first compensation audio signal to eliminate the noise signal generated by the communication system of the electronic device through the first compensation audio signal, thereby preventing the noise signal from generating interference on a receiver of the electronic device, and further influencing the conversation quality of the electronic device.

Optionally, in this embodiment of the present application, the communication system may be a GSM communication system, a branch-spread spectrum communication CDMA (CDMA) system, a fifth generation mobile communication (5th generation mobile/wireless/cellular system, 5G) system, and the like.

In the embodiment of the present application, the first compensation audio signal and the first noise signal have the same amplitude, the same frequency and opposite phase.

For example, as shown in fig. 2, if the amplitude of the first noise signal is 3, the frequency is 1/2, and the phase is positive, the amplitude of the first compensation audio signal is 3, the frequency is 1/2, and the phase is opposite.

Optionally, in the embodiment of the present application, the first compensated audio signal may be used to eliminate the first noise signal.

In the embodiment of the application, because the first compensation audio signal and the first noise signal generated when the communication system operates at the target power level have the same amplitude, the same frequency and the opposite phase, when the communication system of the electronic device operates at the target power level, the electronic device outputs the first compensation audio signal to completely eliminate the noise generated by the communication system, so that the influence of the noise generated by the communication system on the call quality can be avoided.

In the noise reduction method provided in the embodiment of the present application, because the electronic device can obtain the compensation audio signal corresponding to the power level according to the power level adopted by the communication system in the electronic device when operating, and output the compensation audio signal, and perform noise reduction processing on the noise signal generated when the communication system operates at the power level according to the compensation audio signal, the noise interference between the functional modules can be reduced without considering the layout condition of the functional modules in the electronic device, and thus the flexibility of the layout of the functional modules in the electronic device can be improved.

Alternatively, in this embodiment of the application, the step 102 may be specifically implemented by a step 102a described below.

Step 102a, the electronic device outputs a first compensated audio signal in a target time slot.

In the embodiment of the present application, the target timeslot is a working timeslot adopted when the communication system works at the target power level.

Optionally, in this embodiment of the present application, the time lengths of the time slots corresponding to different communication systems are different.

In this embodiment of the application, the electronic device outputting the first compensated audio signal according to the target timeslot may be understood as: the time shift of the first compensated audio signal is adjusted according to the time slot adopted (selected) by the communication system, so that the time slot of the first compensated audio signal is the same as the target time slot, thereby accurately eliminating the first noise signal.

For example, assuming that the duration of one timeslot in the GSM communication system is 0.577ms, and as shown in fig. 3, the timeslot when the GSM communication system is currently operating at the target power level is timeslot 0, then when the next operating timeslot selected by the electronic device when operating at the target power level is timeslot 4 (i.e., the first noise signal is generated again at 4 × 0.577 ms), the electronic device may time shift the first compensated audio signal by 4 × 0.577ms (i.e., the first compensated audio signal is output again at timeslot 4).

In the embodiment of the application, the electronic device can output the first compensation audio signal in the working time slot adopted when the communication system works at the target power level, so that the first compensation audio signal can be ensured to be synchronous with the first noise signal, and the accuracy of outputting the first compensation audio signal by the electronic device can be improved.

Optionally, in this embodiment of the present application, the communication system supports N power levels, where N is a positive integer, and before the step 101, the noise reduction method provided in this embodiment of the present application may further include the following step a and step B.

And step A, the electronic equipment determines N compensation audio signals corresponding to N power levels according to N second noise signals generated when the communication system works at the N power levels.

In the embodiment of the application, the N power levels, the N second noise signals, and the N compensation audios correspond to one another.

In this embodiment, the electronic device may invert the phases of the N second noise signals to obtain N compensated audio signals corresponding to the N power levels.

And step B, the electronic equipment establishes a mapping relation between the N compensation audio signals and the N power levels.

For a specific method for creating the mapping relationship between the N compensated audio signals and the N power levels, detailed description will be given in the following embodiments, and details are not repeated herein in order to avoid repetition.

Optionally, in this embodiment of the application, the N compensated audio signals may be audio signals stored in the electronic device or a server corresponding to the electronic device.

For example, the N compensated audio signals may be stored in a digital format in the electronic device.

It can be understood that, in the embodiment of the present application, the first compensated audio signal is an audio signal of the N compensated audio signals.

It should be noted that, in the embodiment of the present application, each power level supported by the electronic device corresponds to one output power range, and different power levels correspond to different output power ranges.

For example, in a GSM communication system, when the operating frequency band of the GSM communication system is GSM 850/900, the GSM communication system can support 20 power classes.

Wherein, the normal power range corresponding to the power class 5 is: 33 ± 3dB, the maximum power range corresponding to power level 5 is: 33 +/-4 dB; the normal power range corresponding to power class 10 is: 23 ± 3, the maximum power range corresponding to the power class 10 is: 23 + -4 dB.

In this embodiment of the application, because the electronic device may determine, according to N second noise signals generated when the communication system operates at N power levels, N compensation audio signals corresponding to the N power levels, and establish a mapping relationship between the N compensation audio signals and the N power levels, when the communication system of the electronic device operates at different power levels, the electronic device may obtain, based on the mapping relationship, the compensation audio signal corresponding to the adopted power level to eliminate the noise signal generated at the power level adopted by the communication system, and therefore, accuracy of obtaining the first compensation audio signal by the electronic device may be improved.

The specific method for the electronic device to establish the mapping relationship between the N compensated audio signals and the N power levels is described in detail below.

Optionally, in this embodiment of the present application, before the step a, the noise reduction method provided in this embodiment of the present application may further include the following steps 104 and 105.

And 104, picking up noise signals generated when the communication system works at N power levels by the electronic equipment through the audio pick-up device to obtain N third noise signals corresponding to the N power levels one to one.

Optionally, in this embodiment of the application, the audio pickup device may be any device that can pick up audio, such as a microphone.

Alternatively, in this embodiment of the application, the electronic device may convert the N second noise signals picked up by the audio pickup into a Digital format by any possible means such as an analog-To-Digital converter (ADC) and store the Digital format in the electronic device.

And 105, calibrating the N third noise signals by the electronic equipment by using the calibration parameters to obtain N second noise signals.

Optionally, in this embodiment of the present application, the calibration parameter may include a delay parameter and an attenuation parameter.

Optionally, in this embodiment of the application, the time delay of each of the N third noise signals is different, and the attenuation of each of the N third noise signals is different.

It can be understood that, in the embodiment of the present application, the electronic device calibrates the N third noise signals by using the N calibration parameters to obtain the N second noise signals, where the N calibration parameters correspond to the N third noise signals one to one.

Optionally, in this embodiment of the application, the electronic device may calibrate the N third noise signals according to a compensation waveform calculation formula by using the N calibration parameters.

The noise reduction method provided by the embodiment of the present application is exemplarily described below with reference to specific examples.

For example, for each power level, audio s (t) of one frequency in the output frequency range corresponding to one power level may be played, and the attenuated and delayed signal r (t) of the audio may be received by the microphone, and the attenuation (a) and the delay (t0) of the audio signal corresponding to the power level may be calculated by r (t) -As (t-t 0). Then, the electronic device may control the communication system to operate at the one power level, and pick up a third noise signal h (t) corresponding to the one power level through the microphone, and obtain a second noise signal g (t), h (t + t0)/a after calibrating the third noise signal h (t) by using the tested attenuation (a) and time delay (t0) of the audio signal corresponding to the power level, where the specific flow is shown in fig. 4.

Optionally, in this embodiment of the application, if the amplitude of the third noise signal corresponding to one power level is smaller than or equal to the preset threshold, it is considered that the generated noise signal is smaller when the communication system operates at the power level, and compensation and cancellation are not needed, so that it is not necessary to determine the compensated audio signal corresponding to the power level again.

As another example, as shown in table 1 below, when the communication system operates at power level 1, the electronic device may pick up a third noise signal h1(t) generated by the communication system at power level 1 through the audio pickup, calibrate h1(t) by using the attenuation parameter and the delay parameter of the audio signal corresponding to power level 1 to obtain a true noise signal g1(t) (i.e., a second noise signal) generated when the communication system operates at power level 1, and then invert the phase of g1(t) to obtain a compensated audio signal k1(t) corresponding to power level 1. When the communication system operates at the power level 2, the electronic device may pick up a third noise signal h2(t) generated by the communication system at the power level 2 through the audio pickup, calibrate h2(t) by using the attenuation parameter and the delay parameter of the audio signal corresponding to the power level 2 to obtain a true noise signal g2(t) (i.e., a second noise signal) generated when the communication system operates at the power level 2, and then invert the phase of g2(t) to obtain a compensated audio signal k2(t) corresponding to the power level 1.

TABLE 1

In the embodiment of the application, since the electronic device may calibrate the N third noise signals, which are obtained by the audio pickup and correspond to the N power levels one to one, with the calibration parameters including the time delay and the attenuation, to obtain the N second noise signals, the electronic device may determine the N compensation audio signals corresponding to the N power levels according to the N second noise signals, so as to perform noise reduction processing on the noise signals generated at each of the N power levels, and thus, the success rate of noise reduction of the electronic device may be improved.

It should be noted that, in the noise reduction method provided in the embodiment of the present application, the execution main body may be a noise reduction device, or a control module in the noise reduction device for executing the noise reduction method. In the embodiment of the present application, a noise reduction device is taken as an example to execute a noise reduction method, and the noise reduction device provided in the embodiment of the present application is described.

In conjunction with fig. 5, an embodiment of the present application provides a noise reduction device 50, where the noise reduction device 50 may include: an acquisition module 51, an output module 52 and a processing module 53. The obtaining module 51 may be configured to obtain a first compensated audio signal corresponding to a target power level according to the target power level, where the target power level is a power level adopted by the communication system during operation. The output module 52 may be configured to output the first compensated audio signal. The processing module 53 may be configured to perform noise reduction processing on a first noise signal according to the first compensated audio signal, where the first noise signal is generated when the communication system operates at the target power level.

In one possible implementation, the first compensated audio signal and the first noise signal have the same amplitude, the same frequency and opposite phase.

In one possible implementation, the output module 52 may be specifically configured to output the first compensated audio signal in a target timeslot, where the target timeslot is an operating timeslot used when the communication system operates at a target power level.

In a possible implementation manner, the communication system supports N power levels, where N is a positive integer, and the noise reduction apparatus 50 may further include a determining module and an establishing module. The determining module may be configured to determine, before the obtaining module 51 obtains the first compensated audio signal corresponding to the target power level according to the target power level, N compensated audio signals corresponding to N power levels according to N second noise signals generated when the communication system operates at the N power levels, where the N power levels, the N second noise signals, and the N compensated audio signals correspond to one another. The establishing module may be configured to establish a mapping relationship between the N compensated audio signals and the N power levels.

In a possible implementation manner, the noise reduction apparatus 50 may further include a pickup module and a calibration module. And the pick-up module can be used for picking up the noise signals generated by the communication system when the communication system works at the N power levels through the audio pick-up device before the determination module determines the N compensated audio signals corresponding to the N power levels according to the N second noise signals generated by the communication system when the communication system works at the N power levels, so as to obtain N third noise signals corresponding to the N power levels one by one. The calibration module may be configured to calibrate the N third noise signals picked up by the pickup module by using calibration parameters to obtain N second noise signals, where the calibration parameters include a delay parameter and an attenuation parameter.

In the noise reduction apparatus provided in the embodiment of the present application, because the noise reduction apparatus can obtain the compensation audio signal corresponding to the power level according to the power level adopted by the communication system in the electronic device when operating, and output the compensation audio signal, and perform noise reduction processing on the noise signal generated when the communication system operates at the power level according to the compensation audio signal, the noise interference between the functional modules can be reduced without considering the layout condition of the functional modules in the electronic device, and thus the flexibility of the layout of the functional modules in the electronic device can be improved.

The beneficial effects of the various implementation manners in this embodiment may specifically refer to the beneficial effects of the corresponding implementation manners in the above method embodiments, and are not described herein again to avoid repetition.

The noise reduction device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The noise reduction device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an IOS operating system, or other possible operating systems, which is not specifically limited in the embodiments of the present application.

The noise reduction device provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 1 to fig. 4, and is not described here again to avoid repetition.

As shown in fig. 6, an electronic device 200 according to an embodiment of the present application is further provided, which includes a processor 202, a memory 201, and a program or an instruction stored in the memory 201 and executable on the processor 202, and when the program or the instruction is executed by the processor 202, the process of the embodiment of the noise reduction method is implemented, and the same technical effect can be achieved, and details are not repeated here to avoid repetition.

It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and the non-mobile electronic devices described above.

Fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

Those skilled in the art will appreciate that the electronic device 1000 may further comprise a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 7 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

The processor 1010 may be configured to obtain a first compensated audio signal corresponding to a target power level according to the target power level, where the target power level is a power level adopted by the communication system during operation. The audio output unit 1003 may be configured to output the first compensated audio signal. The processor 1010 may be further configured to perform noise reduction processing on a first noise signal according to the first compensated audio signal, where the first noise signal is generated when the communication system operates at the target power level.

In a possible implementation manner, the audio output unit 1003 may be specifically configured to output the first compensated audio signal in a target timeslot, where the target timeslot is an operating timeslot adopted when the communication system operates at a target power level.

In a possible implementation manner, the communication system supports N power levels, where N is a positive integer, and the processor 1010 may be further configured to determine, before obtaining the first compensated audio signal corresponding to the target power level according to the target power level, N compensated audio signals corresponding to the N power levels according to N second noise signals generated when the communication system operates at the N power levels, where the N power levels, the N second noise signals, and the N compensated audio correspond to one another. The processor 1010 may be further configured to establish a mapping between the N compensated audio signals and the N power levels.

In one possible implementation, the processor 1010 may be further configured to, before determining N compensated audio signals corresponding to N power levels according to N second noise signals generated by the communication system when operating at N power levels, pick up, by an audio pick-up, noise signals generated by the communication system when operating at N power levels, and obtain N third noise signals corresponding to N power levels one to one. The processor 1010 may further be configured to calibrate the N third noise signals picked up by using a calibration parameter to obtain N second noise signals, where the calibration parameter includes delay and attenuation.

In the electronic device provided in the embodiment of the present application, because the electronic device can obtain the compensation audio signal corresponding to the power level according to the power level adopted by the communication system in the electronic device when operating, and output the compensation audio signal, and perform noise reduction processing on the noise signal generated when the communication system operates at the power level according to the compensation audio signal, the noise interference between the functional modules can be reduced without considering the layout condition of the functional modules in the electronic device, and thus the flexibility of the layout of the functional modules in the electronic device can be improved.

It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 1009 may be used to store software programs as well as various data, including but not limited to application programs and operating systems. Processor 1010 may integrate an application processor that handles primarily operating systems, user interfaces, applications, etc. and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above noise reduction method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is a processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk. The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the above noise reduction method embodiment, and the same technical effect can be achieved.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method of noise reduction, the method comprising:

acquiring a first compensation audio signal corresponding to a target power grade according to the target power grade, wherein the target power grade is a power grade adopted when a communication system works;

outputting the first compensated audio signal;

and carrying out noise reduction processing on a first noise signal according to the first compensation audio signal, wherein the first noise signal is generated when the communication system works at the target power level.

2. The method of claim 1, wherein the first compensated audio signal and the first noise signal have the same amplitude, the same frequency, and opposite phase.

3. The method of claim 1, wherein outputting the first compensated audio signal comprises:

and outputting the first compensation audio signal in a target time slot, wherein the target time slot is a working time slot adopted when the communication system works at the target power level.

4. The method of claim 1, wherein the communication system supports N power levels, N being a positive integer;

before the obtaining of the first compensated audio signal corresponding to the target power level according to the target power level, the method further includes:

determining N compensation audio signals corresponding to the N power levels according to N second noise signals generated when the communication system works at the N power levels, wherein the N power levels, the N second noise signals and the N compensation audio correspond to one another one by one;

and establishing a mapping relation between the N compensation audio signals and the N power levels.

5. The method of claim 4, wherein prior to determining N compensated audio signals corresponding to the N power levels based on N second noise signals generated by the communication system while operating at the N power levels, the method further comprises:

picking up noise signals generated when the communication system works at the N power levels through an audio pick-up device to obtain N third noise signals corresponding to the N power levels one to one;

and calibrating the N third noise signals by adopting calibration parameters to obtain the N second noise signals, wherein the calibration parameters comprise a time delay parameter and an attenuation parameter.

6. The noise reduction device is characterized by comprising an acquisition module, an output module and a processing module;

the acquisition module is used for acquiring a first compensation audio signal corresponding to a target power grade according to the target power grade, wherein the target power grade is a power grade adopted by a communication system during working;

the output module is used for outputting the first compensated audio signal;

and the processing module is used for carrying out noise reduction processing on a first noise signal according to the first compensation audio signal, wherein the first noise signal is generated when the communication system works at the target power level.

7. The apparatus of claim 6, wherein the first compensated audio signal and the first noise signal have the same amplitude, the same frequency, and opposite phase.

8. The apparatus of claim 6,

the output module is specifically configured to output the first compensated audio signal in a target timeslot, where the target timeslot is a working timeslot adopted when the communication system works at the target power level.

9. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the noise reduction method according to any one of claims 1 to 5.

10. A readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the noise reduction method according to any one of claims 1 to 5.