CN108600489B

CN108600489B - Earphone, calibration method of loudspeaker, mobile terminal and readable storage medium

Info

Publication number: CN108600489B
Application number: CN201810402346.2A
Authority: CN
Inventors: 丁火根
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2021-03-26
Anticipated expiration: 2038-04-28
Also published as: CN108600489A

Abstract

The invention discloses a method for calibrating a receiver and a loudspeaker, which comprises the following steps: acquiring sound parameters collected by a built-in microphone; judging whether the sound parameter exceeds the sound parameter range of a receiver or a loudspeaker set by a built-in microphone; and if so, calibrating the sound parameters of the receiver or the loudspeaker. In addition, the invention also provides a mobile terminal and a readable storage medium, by adopting the method and the device, the working state of the receiver or the loudspeaker can be intelligently detected, and the sound effect and the service life of components are further prolonged.

Description

Earphone, calibration method of loudspeaker, mobile terminal and readable storage medium

Technical Field

The invention relates to the technical field of mobile terminals, in particular to a method for calibrating a receiver and a loudspeaker, a mobile terminal and a readable storage medium.

Background

With the rapid development of mobile terminals and Artificial Intelligence (AI), the quality of speech is more and more favored by consumers, and the existing noise reduction scheme collects external noise through an auxiliary microphone MIC and performs subtraction with a main microphone, thereby achieving the purpose of noise reduction. However, if the external noise seriously affects the signals received by the main microphone and the auxiliary microphone, the performance and effect of the receiver and the loudspeaker are greatly affected.

Disclosure of Invention

The invention mainly aims to provide a method for calibrating an earphone and a loudspeaker, a mobile terminal and a readable storage medium, and aims to solve the problem that the performance and the effect of the earphone and the loudspeaker cannot be influenced by the conventional mobile terminal under the condition that the external noise influences a microphone to receive signals.

In order to achieve the above object, the present invention provides a calibration method for an earpiece and a speaker, the method comprising the steps of:

acquiring sound parameters collected by a built-in microphone;

judging whether the sound parameters exceed sound parameter ranges of an earphone and a loudspeaker, wherein the sound parameter ranges of the earphone and the loudspeaker are set by the built-in microphone;

and if so, calibrating the sound parameters of the receiver and the loudspeaker.

Optionally, the built-in microphone is configured to collect a back cavity sound source signal of the earpiece or/and the speaker, where the back cavity sound source signal is 180 degrees out of phase with a sound source signal of the earpiece or/and the speaker received by the primary microphone and the at least one secondary microphone.

Optionally, the main microphone is configured to receive a handheld end sound source signal and an external environment noise signal of the mobile terminal;

the at least one secondary microphone comprises a first secondary microphone and a second secondary microphone, wherein the first secondary microphone is used for receiving an external environment noise signal and a handheld end sound signal, and the second secondary microphone is used for receiving a sound source signal of the earphone and the loudspeaker and the external environment noise signal.

Optionally, the sound parameters of the back cavity sound source signal at least include: amplitude, sound pressure level SPL, and total harmonic distortion THD.

Optionally, if the amplitudes of the earphone and the speaker are increased, the SPL is increased, and the THD is increased; when the amplitude of the earphone and the loudspeaker is reduced, the SPL is reduced, and the THD is increased.

Optionally, after calibrating the sound parameters of the earpiece and the speaker, the method further includes:

and judging whether the sound parameters of the calibrated receiver and the calibrated loudspeaker exceed the preset sound parameter range.

Optionally, the sound parameter ranges of the receiver and the speaker of the built-in microphone include:

receiving a calibration signal sent by the earphone or/and the loudspeaker;

calibrating a back cavity sound source signal collected by the built-in microphone to the receiver or/and the microphone according to the signal;

generating the SPL and THD standard of the whole machine by the rear cavity sound source signal;

and setting the standard tolerance range as a preset sound parameter range.

Optionally, the standard tolerance ranges are: SPL is less than or equal to 2 decibels and THD is less than or equal to 2 percent and less than or equal to 2 percent.

In addition, to achieve the above object, the present invention further provides a mobile terminal, including: the system comprises a main microphone, at least one auxiliary microphone, a built-in microphone, a processor and a memory, wherein the processor is used for executing a calibration program of an earphone and a loudspeaker stored in the memory so as to realize the method.

In addition, to achieve the above object, the present invention also provides a readable storage medium, wherein the readable storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the above method.

According to the method for calibrating the receiver and the loudspeaker, the mobile terminal and the readable storage medium, the sound parameters collected by the built-in microphone are obtained, and when the sound parameters are judged to exceed the sound parameter range of the receiver and the loudspeaker set by the built-in microphone, the sound parameters of the receiver and the loudspeaker are calibrated. The invention can intelligently detect the working states of the receiver and the loudspeaker, thereby improving the sound effect and prolonging the service life of components.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present invention;

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

fig. 3 is a schematic flowchart of a calibration method for an earphone and a speaker according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a mobile terminal in various embodiments of the present invention;

fig. 5 is a sub-flowchart of a calibration method for an earphone and a speaker according to a first embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.

First embodiment

Fig. 3 is a flowchart of an embodiment 300 of a method for calibrating an earpiece and a speaker provided in the present application. Once the method of this embodiment is triggered by a user, the process in this embodiment automatically runs through a terminal, where each step may be performed sequentially according to the sequence in the flowchart, or may be performed simultaneously according to a plurality of steps according to an actual situation, which is not limited herein, and the information processing method includes the following steps:

step 310, acquiring sound parameters collected by a built-in microphone;

step 320, judging whether the sound parameters exceed the sound parameter ranges of a receiver and a loudspeaker which are set by a built-in microphone; if yes, go to step 330; if not, the process is ended;

and step 330, calibrating the sound parameters of the earphone and the loudspeaker.

Through above-mentioned embodiment, through the sound parameter that acquires built-in microphone collection, when judging the sound parameter and surpassing the sound parameter scope through the earphone that built-in microphone set up, speaker, then the calibration the sound parameter of earphone, speaker to can the operating condition of intellectual detection system earphone, speaker, and then improved the life of audio and components and parts.

Hereinafter, the respective steps of the calibration method of the earpiece and the speaker in the present exemplary embodiment will be further described.

In step 310, sound parameters collected by a built-in microphone for collecting a back cavity sound source signal of an earphone or/and a loudspeaker, which is 180 degrees out of phase with sound source signals of the earphone or/and the loudspeaker received by the main microphone and the at least one auxiliary microphone, are obtained.

In the embodiment, the main microphone is used for receiving a handheld end sound source signal and an external environment noise signal of the mobile terminal. In this embodiment, the at least one secondary microphone includes a first secondary microphone and a second secondary microphone. The first auxiliary microphone is used for receiving an external environment noise signal and a handheld end sound signal; the second secondary microphone is used for receiving sound source signals of the receiver and the loudspeaker and external environment noise signals.

Fig. 4 is a schematic structural diagram of the mobile terminal in this embodiment, in which a built-in microphone, a main microphone, a first microphone, a second microphone, and an earpiece or a speaker are disposed on the mobile terminal. In fig. 4, a main microphone 1 is disposed at the bottom end face of the mobile terminal, and a first sub-microphone 2 is disposed at the top face of the mobile terminal; the second microphone 3 and the receiver or the loudspeaker 4 are arranged adjacently and are arranged on the front surface of the mobile terminal and close to the top; the built-in microphone 5 is provided inside the mobile terminal and adjacent to the earpiece or speaker 4. In other embodiments, the relative positions of the built-in microphone 5, the main microphone 1, the first microphone 2, the second microphone 3, and the earpiece or speaker 4 may also be changed, and the present invention is not particularly limited herein.

Optionally, the sound parameters of the back cavity sound source signal at least include: amplitude, Sound Pressure Level (SPL), and Total Harmonic Distortion (THD).

In a practical scenario, when the receiver or the speaker operates for a period of time, the diaphragm fatigue and the performance degradation occur, which leads to the increase of the amplitude of the receiver or the speaker, the SPL increases, the THD increases, and even noise occurs, which leads to the abnormal operation of the receiver or the speaker.

In another practical scenario, when the receiver or speaker operates for a period of time and the diaphragm is contaminated, so that the weight is increased, and the amplitude of the receiver or speaker is reduced, the SPL is reduced, the THD is increased, and even noise is generated, so that the receiver or speaker operates abnormally.

In step 320, as shown in fig. 5, the sound parameter ranges of the earpiece and the speaker with the built-in microphone specifically include:

step 510, receiving a calibration signal sent by an earphone or/and a loudspeaker;

step 520, calibrating a rear cavity sound source signal collected by the internal microphone to the receiver or/and the microphone according to the signal;

step 530, generating the SPL and THD standards of the whole machine by the rear cavity sound source signal;

and 540, setting the standard tolerance range as a preset sound parameter range.

Specifically, the receiver and the speaker send out calibration signals through chip instructions, and then receive the calibration signals to calibrate the sound source signals of the receiver or/and the speaker collected by the built-in microphone, so as to generate the standards of the SPL and the THD of the whole machine, and then the tolerance range based on the standards is used as the sound parameter range.

In the present embodiment, the tolerance ranges of the setting criteria are: SPL is less than or equal to 2 decibels and THD is less than or equal to 2 percent and less than or equal to 2 percent. In other embodiments, tolerance ranges for other values may be set, and the invention is not specifically limited herein.

In step 330, when it is detected that the sound parameter collected by the built-in microphone exceeds the set tolerance range, indicating that the receiver or the speaker is in an abnormal working state, the sound parameter is fed back to the processor 110 to trigger the start of the function of calibrating the receiver and the speaker, so that the parameters of the amplitude of the receiver and the speaker, etc., are restored to the balance value, and the service life of the receiver and the speaker is increased.

Optionally, after step 330, the method for calibrating an earpiece and a speaker in this embodiment further includes:

Specifically, after calibrating the earpiece and the speaker, it may be further determined whether the calibrated sound parameter is within the standard tolerance range or exceeds the tolerance range, and the calibration is performed again until the parameters such as the amplitudes of the earpiece and the speaker are restored to the balance values.

According to the calibration method for the receiver and the loudspeaker, the sound parameters collected by the built-in microphone are obtained, and when the sound parameters are judged to exceed the sound parameter range of the receiver and the loudspeaker set by the built-in microphone, the sound parameters of the receiver and the loudspeaker are calibrated, so that the working states of the receiver and the loudspeaker can be intelligently detected, and the service lives of sound effects and components are prolonged.

Second embodiment

In another embodiment of the present application, based on the foregoing embodiments and with reference to fig. 1, a mobile terminal includes a processor 110, a memory 109;

the processor 110 is configured to execute a calibration procedure for the earpiece and speaker stored in the memory 109 to implement the following steps:

acquiring sound parameters collected by a built-in microphone;

judging whether the sound parameters exceed the sound parameter ranges of a receiver and a loudspeaker which are set by a built-in microphone; and if so, calibrating the sound parameters of the receiver and the loudspeaker.

And acquiring sound parameters collected by a built-in microphone, wherein the built-in microphone is used for collecting a rear cavity sound source signal of an earphone or/and a loudspeaker, and the rear cavity sound source signal is 180-degree out of phase with sound source signals of the earphone or/and the loudspeaker received by the main microphone and the at least one auxiliary microphone.

Optionally, the sound parameters of the back cavity sound source signal at least include: amplitude, SPL, and THD.

Optionally, the processor 110 is further configured to execute a calibration program of the earphone and the speaker stored in the memory 109, so as to implement the following steps:

receiving a calibration signal sent by an earphone or/and a loudspeaker;

and setting the standard tolerance range as a preset sound parameter range.

When detecting that the sound parameters collected by the built-in microphone exceed the set tolerance range, which indicates that the receiver or the loudspeaker is in an abnormal working state, the sound parameters are fed back to the processor 110 to trigger the start of the function of calibrating the receiver and the loudspeaker, so that the parameters of the amplitude and the like of the receiver and the loudspeaker are restored to the balance value, and the service lives of the receiver and the loudspeaker are prolonged.

The mobile terminal provided by the embodiment collects sound parameters through the built-in microphone, and when the sound parameters exceed the sound parameter range of the receiver and the loudspeaker set by the built-in microphone, the sound parameters of the receiver and the loudspeaker are calibrated, so that the working states of the receiver and the loudspeaker can be intelligently detected, and the service lives of sound effects and components are prolonged.

Third embodiment

The embodiment of the application also provides a readable storage medium. The readable storage medium herein stores one or more programs. Among other things, a readable storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above. When the one or more programs in the readable storage medium are executable by the one or more processors, the method for calibrating the earphones and the loudspeaker provided by the first embodiment is implemented.

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.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

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 invention may be embodied in the form of a 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, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of calibrating an earpiece or speaker, the method comprising the steps of:

acquiring sound parameters collected by a built-in microphone;

judging whether the sound parameter exceeds the sound parameter range of an earphone or a loudspeaker, wherein the sound parameter range of the earphone or the loudspeaker is set by the built-in microphone;

if yes, calibrating the sound parameters of the receiver or the loudspeaker;

the built-in microphone is used for collecting a rear cavity sound source signal of the earphone or/and the loudspeaker, and the phase of the rear cavity sound source signal is 180 degrees different from that of sound source signals of the earphone or/and the loudspeaker received by the main microphone and the at least one auxiliary microphone;

the sound parameter range of the receiver or the loudspeaker of the built-in microphone device comprises:

receiving a calibration signal sent by the earphone or/and the loudspeaker;

and setting the standard tolerance range as a preset sound parameter range.

2. The calibration method for the earphone or the speaker according to claim 1, wherein the primary microphone is used for receiving a handheld end sound source signal and an external environment noise signal of the mobile terminal;

the at least one secondary microphone comprises a first secondary microphone and a second secondary microphone, wherein the first secondary microphone is used for receiving an external environment noise signal and a handheld end sound signal, and the second secondary microphone is used for receiving a sound source signal of the earphone or the loudspeaker and the external environment noise signal.

3. Method for calibrating an earpiece or speaker according to claim 1, wherein the sound parameters of the back volume sound source signal comprise at least: amplitude, sound pressure level SPL, and total harmonic distortion THD.

4. The method of calibrating an earpiece or speaker of claim 3, wherein if the amplitude of the earpiece or speaker increases, the SPL increases and the THD increases; the amplitude of the earpiece or speaker decreases, the SPL decreases, and the THD increases.

5. The method of calibrating an earpiece or speaker of claim 1, wherein after calibrating the acoustic parameters of the earpiece or speaker, the method further comprises:

and judging whether the sound parameter of the calibrated receiver or the calibrated loudspeaker exceeds a preset sound parameter range.

6. The method of calibrating an earpiece or speaker of claim 1, wherein the standard has a tolerance range of: SPL is less than or equal to 2 decibels and THD is less than or equal to 2 percent and less than or equal to 2 percent.

7. A mobile terminal, characterized in that the mobile terminal comprises: a primary microphone, at least one secondary microphone, a built-in microphone, a processor and a memory, wherein the processor is configured to execute a calibration procedure for an earpiece or speaker stored in the memory to implement the method of any of claims 1-6.

8. A readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the method of any one of claims 1-6.