WO2022199354A1

WO2022199354A1 - Call volume adjustment method and apparatus, and terminal and storage medium

Info

Publication number: WO2022199354A1
Application number: PCT/CN2022/079191
Authority: WO
Inventors: 谢名杰
Original assignee: 深圳市锐尔觅移动通信有限公司
Priority date: 2021-03-24
Filing date: 2022-03-04
Publication date: 2022-09-29
Also published as: CN113067944B; CN113067944A

Abstract

A call volume adjustment method and apparatus, and a terminal and a storage medium, which belong to the technical field of voice calls. The method comprises: during a call, outputting a first audio signal to a receiver, wherein the receiver is used for producing a sound on the basis of the first audio signal (401); acquiring a second audio signal collected by a first microphone, wherein the second audio signal comprises an audio signal of a reflected sound that is formed after the sound produced by the receiver is reflected by a target human body, the target human body being a human body within the orientation range of the receiver (402); on the basis of the first audio signal and the second audio signal, determining a call volume adjustment mode, and performing volume adjustment on the first audio signal (403); and outputting, to the receiver, the first audio signal that has been subjected to the volume adjustment (404). By using the solution provided in the embodiments of the present application, the quality of a voice call can be improved.

Description

Method, device, terminal and storage medium for adjusting call volume

This application claims the priority of the Chinese Patent Application No. 202110315862.3 filed on March 24, 2021 and entitled "Method, Device, Terminal and Storage Medium for Adjusting the Volume of a Call", the entire contents of which are incorporated herein by reference Applying.

technical field

The embodiments of the present application relate to the technical field of voice calls, and in particular, to a method, device, terminal, and storage medium for adjusting the volume of a call.

Background technique

As one of the most basic functions in a terminal, voice calling is widely used in daily use.

In the related art, when a user uses a terminal to make a voice call, he can adjust the call volume by clicking the volume button according to his own needs, so as to achieve a satisfactory call effect.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, device, terminal, and storage medium for adjusting a call volume. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a method for adjusting a call volume, the method comprising:

During the call, output a first audio signal to the earpiece, where the earpiece is used to make a sound based on the first audio signal;

Acquire a second audio signal collected by the first microphone, where the second audio signal includes an audio signal of a reflected sound, and the reflected sound is formed after the sound emitted by the earpiece is reflected at the target human body, and the target human body is the earpiece towards the human body within range;

Determine a call volume adjustment mode based on the first audio signal and the second audio signal, and perform volume adjustment on the first audio signal;

The volume-adjusted first audio signal is output to the earpiece.

On the other hand, an embodiment of the present application provides a device for adjusting a call volume, the device comprising:

a signal output module, configured to output a first audio signal to an earpiece during a call, where the earpiece is used to make a sound based on the first audio signal;

The first signal acquisition module is used to acquire the second audio signal collected by the first microphone, the second audio signal includes the audio signal of the reflected sound, and the reflected sound is the sound emitted by the earpiece after being reflected at the target human body Formed, the target human body is the human body within the scope of the earpiece;

a volume adjustment module, configured to determine a call volume adjustment mode based on the first audio signal and the second audio signal, and perform volume adjustment on the first audio signal;

The signal output module is further configured to output the volume-adjusted first audio signal to the earpiece.

On the other hand, an embodiment of the present application provides a terminal, the terminal includes a processor, a memory, an earpiece, and at least one microphone, the memory stores at least one instruction, and the at least one instruction is loaded by the processor And execute the method for adjusting the call volume according to the above aspects.

On the other hand, an embodiment of the present application provides a computer-readable storage medium, where at least one piece of program code is stored in the computer-readable storage medium, and the program code is loaded and executed by a processor to implement the above aspects how to adjust the call volume.

On the other hand, an embodiment of the present application provides a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the terminal reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the terminal executes the method for adjusting the call volume provided by the above aspects.

Description of drawings

FIG. 1 is a schematic diagram of an acoustic acquisition solution provided by an exemplary embodiment of the present application;

FIG. 2 is a schematic implementation diagram of a process of receiving reflected sound with a first microphone according to an exemplary embodiment of the present application;

Fig. 3 is the schematic diagram of the angle formed between the terminal and the human body under different terminal holding postures;

FIG. 4 shows a flowchart of a method for adjusting a call volume provided by an exemplary embodiment of the present application;

5 is a schematic diagram of the implementation of a call volume adjustment process shown in an exemplary embodiment of the present application;

FIG. 6 shows a flowchart of a method for adjusting a call volume provided by an exemplary embodiment of the present application;

Fig. 7 is the experimental data comparison diagram of the simulation experiment;

FIG. 8 shows a flowchart of a method for adjusting a call volume provided by another exemplary embodiment of the present application;

9 is a schematic diagram of the implementation of a call volume adjustment process shown in another exemplary embodiment of the present application;

Fig. 10 is the experimental data comparison diagram of the simulation experiment;

11 shows a structural block diagram of an apparatus for adjusting a call volume provided by an embodiment of the present application;

FIG. 12 shows a structural block diagram of a terminal provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

For the convenience of understanding, the terms involved in the embodiments of the present application are first described below.

Handset: The speaker used to play the peer's voice during a voice call with the handheld terminal. Usually, the earpiece is set at the top of the terminal (on the screen side). When the user holds the terminal to make a call, the earpiece should be close to the human ear to achieve a good listening effect.

Microphone: A component used for sound collection. Usually, a terminal is provided with multiple microphones, and different microphones implement different functions during a call. For example, the microphone set at the bottom of the terminal is used to collect the user's voice during the call, and the microphone set at the top of the terminal is used to collect the ambient sound, so as to realize the noise reduction function by using the ambient sound.

Frequency band: a division of the frequency range, the frequency band in the embodiment of the present application is obtained by dividing the frequency range of the sound that can be heard by the human ear. For example, a signal in the frequency range of 200Hz to 5000Hz can be divided into three frequency bands, namely 200 to 500Hz, 500 to 2000Hz, and 2000 to 5000Hz. The embodiments of the present application do not limit the specific division manner of frequency bands.

In the method for adjusting the call volume provided by the embodiment of the present application, after the terminal emits sound through the earpiece, it can adjust the volume of the audio signal input to the earpiece adaptively based on the reflected sound formed by the sound of the earpiece reflected at the human body (human ear), so as to increase the volume of the audio signal input to the earpiece. The listening effect of the human ear under different holding postures of the terminal (the distance between the earpiece and the human ear is different).

In order to improve the collection quality of reflected sound, the embodiment of the present application provides an acoustic collection solution. In this solution, a microphone is provided on one side of the earpiece. During a call, the terminal collects the reflected sound through the microphone, and then determines the volume adjustment method based on the original sound emitted by the earpiece and the reflected sound.

In a possible design, as shown in FIG. 1 , the front cover 101 of the terminal 100 is provided with a first opening 1011 , and the PCB 102 inside the terminal 100 is provided with a first microphone 103 . The first microphone 103 is covered with a sealant sleeve 104, and the opening of the sealant sleeve 104 is close to the first opening 1011, so that the first microphone 103 can receive the incoming sound through the first opening 1011 and isolate other The sound source channel interferes with the reception of the first microphone 103 .

As shown in FIG. 2, the terminal 100 is also provided with an earpiece 108. During the call, after the earpiece 108 emits a sound, the sound is transmitted through the first opening 1011, and is reflected at the human body 200, and the reflected sound formed after the reflection passes through the first hole 1011. An opening 1011 is received by the first microphone 103 .

There is a certain time difference between the terminal emits sound through the earpiece and receives the reflected sound through the first microphone. Based on the time difference, the propagation speed of the sound, and the reflection angle during reflection, the distance between the earpiece and the human ear can be determined. The calculation formula of the distance is as follows :

Among them, S is the distance between the earpiece and the human ear, ΔT is the time difference, V is the speed of sound propagation, and δ is the reflection angle.

As shown in FIG. 3 , due to the different habits of different users holding the terminal 100 to make calls, that is, the angle formed between the terminal 100 and the human body 200 is different, so the reflection angles of the sound when reflected on the human body are different, and the different reflection angles will affect the The distance the sound travels (the distance from the earpiece to the human body, and then reflected back to the microphone by the human body).

In addition, since the sound will be weakened during the propagation process, and the degree of the weakening is related to the propagation distance of the sound, the terminal can determine the distance between the earpiece and the human body based on the magnitude of the reflected sound received by the first microphone, and then determine the distance between the earpiece and the human body. The volume of the sound from the earpiece is adjusted to improve the listening effect during the call.

Of course, in other possible designs, other microphones located close to the earpiece can also be multiplexed as the first microphone. For example, the noise-cancelling microphone arranged on the top of the terminal is used to receive the reflected sound, so that there is no need to additionally set the first microphone and reduce the The manufacturing cost of the terminal is not limited in this embodiment.

In addition, in another possible design, the second microphone 105 is further provided on the PCB 102, the second opening 1061 is provided on the back cover 106 of the terminal 100, the second microphone 105 is covered with a sealant cover 107, and The opening of the sealing rubber sleeve 107 is close to the second opening 1061 , so that the second microphone 105 can receive the incoming sound through the second opening 1061 and isolate the reception interference of the second microphone 105 by other sound source channels.

As shown in FIG. 2 , during the call, the second microphone 105 collects the ambient sound passing through the second opening 1061 , so that the terminal can adjust the volume of the sound emitted by the earpiece 108 based on the ambient sound to adapt to different call environments.

For the convenience of description, each embodiment of the present application is described by taking the method for adjusting the call volume applied to the terminal shown in FIG. 1 or FIG. 2 as an example, but this does not constitute a limitation.

Please refer to FIG. 4 , which shows a flowchart of a method for adjusting a call volume provided by an exemplary embodiment of the present application. This embodiment is described by taking the method for the terminal shown in FIG. 1 as an example, and the method includes:

Step 401 , during the call, output a first audio signal to the earpiece, and the earpiece is used to make a sound based on the first audio signal.

In a possible implementation manner, the terminal outputs the first audio signal to the earpiece through a digital signal processor (Digital Signal Processor, DSP) or an application processor (Application Processor, AP) (other chips with audio processing capability), The first audio signal is converted from an electrical signal into an acoustic signal by the earpiece, so as to produce sound. Of course, the processor and the earpiece are connected through a necessary audio circuit, which is not limited in this embodiment.

Step 402: Acquire a second audio signal collected by the first microphone. The second audio signal includes an audio signal of a reflected sound. The reflected sound is formed by the sound emitted by the earpiece reflected at the target human body, and the target human body is a human body within the range of the earpiece facing. .

Since the distance between the earpiece and the human ear is different in different holding states, and this distance will affect the listening of the human ear, the call volume is adaptively adjusted based on the distance between the earpiece and the human ear. In this embodiment, While the terminal emits sound through the earpiece, the second audio signal containing the reflected sound is collected by the first microphone. The reflected sound is the sound formed by the sound emitted by the earpiece reflected at the target human body, that is, the sound emitted by the earpiece is within the direction of the earpiece. After being reflected at the human body, it is collected by the first microphone.

Optionally, the earpiece facing range is a fan-shaped range directly in front of the earpiece, and the fan-shaped range may be a 10° fan-shaped range, a 30° fan-shaped range, or a 90° fan-shaped range, which is not limited in this embodiment of the present application. Usually, the target body is a human ear or a human face close to the human ear.

In a possible implementation manner, the terminal receives the second audio signal collected by the first microphone through the DSP or the AP, where the second audio signal is obtained by performing analog-to-digital conversion on the microphone signal by an audio circuit.

Step 403: Determine a call volume adjustment mode based on the first audio signal and the second audio signal, and adjust the volume of the first audio signal.

In the case of outputting the same audio signal to the earpiece, if the distance between the earpiece and the human ear is different, the sound received by the human ear is different (mainly manifested as different volume of the sound), and the reflected sound collected by the first microphone is also different. different. Generally, the farther the distance between the earpiece and the human ear, the lower the volume of the sound received by the human ear, and the lower the volume of the reflected sound collected by the first microphone.

Therefore, based on the above characteristics, the terminal can measure the distance between the earpiece and the human ear based on the first audio signal and the second audio signal, so as to determine the call volume adjustment method of the first audio signal.

When the distance between the earpiece and the human ear is relatively far, the terminal adjusts the first audio signal to increase the volume of the sound emitted by the earpiece; when the distance between the earpiece and the human ear is relatively short, the terminal adjusts the first audio signal to reduce the volume of the sound emitted by the earpiece the volume of the sound. The specific manner of the first audio signal will be described in detail in the following embodiments.

In a possible implementation manner, the DSP or AP of the terminal determines a call volume adjustment mode based on the first audio signal and the second audio signal, and adjusts the volume of the first audio signal.

Step 404: Output the volume-adjusted first audio signal to the earpiece.

In a possible implementation manner, the terminal outputs the volume-adjusted first audio signal to the earpiece through the DSP or AP, so that the earpiece emits sound based on the adjusted first audio signal, so as to realize the adaptive adjustment of the call volume at the human ear . Among them, the adaptive adjustment of the call volume is as follows: when the distance between the earpiece and the human ear is relatively far, after the terminal adaptively adjusts the call volume, the volume of the sound received by the human ear increases; when the distance between the earpiece and the human ear is short, the terminal After adaptively adjusting the call volume, the volume of the sound received by the human ear is reduced.

As shown in FIG. 5 , after the chip 51 outputs the first audio signal to the earpiece 52 , the earpiece 52 emits sound based on the first audio signal, the first microphone 53 collects the reflected sound, and outputs the second audio signal to the chip 51 . 51 adjusts the first audio signal based on the second audio signal to form a complete adjustment feedback chain.

During the call, the terminal can perform the above steps cyclically, so as to monitor the change of the sound at the human ear (changed due to the change of the terminal's holding state) in real time, and make adaptive adjustment based on the change of the sound to ensure that the user can hold different holding postures. Good call quality can be obtained when holding the terminal to make a call.

To sum up, in this embodiment, during a call, after the earpiece emits sound based on the input first audio signal, the sound is reflected at the human body to form a reflected sound and collected by the first microphone. The distance between the human body is different, and the distance between the earpiece and the human body will affect the strength of the reflected sound, so the terminal obtains the second audio signal collected by the first microphone, and based on the first audio signal and the second audio signal The signal adjusts the volume of the first audio signal, which can realize adaptive adjustment of the call volume for different terminal holding postures, and helps to improve the accuracy of the call volume adjustment, thereby improving the voice call quality in different terminal holding postures.

It should be noted that the above-mentioned method for adjusting the volume of a call is applicable to a hand-held call scenario, that is, a scenario in which the user places the handset of the terminal close to the human ear to make a call. Therefore, in a possible implementation manner, before adjusting the volume, the terminal first determines In the current call mode, and when the current call mode is a hand-held call, the receiver and the first microphone are turned on, so that the call volume can be adaptively adjusted subsequently. When the current call mode is a headset call (which can be determined by detecting whether an external headset is connected) or an external call (which can be determined by detecting whether the external playback function is enabled), the earpiece and the first microphone are not turned on.

In a possible implementation manner, determining a call volume adjustment method based on the first audio signal and the second audio signal, and performing volume adjustment on the first audio signal, including:

obtaining the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal;

determining a call volume adjustment mode based on the first signal amplitude and the second signal amplitude;

Adjust the first signal amplitude of the first audio signal based on the call volume adjustment method.

In a possible implementation manner, determining a call volume adjustment method based on the first signal amplitude and the second signal amplitude includes:

determining the amplitude ratio of the second signal amplitude to the first signal amplitude;

The first call volume adjustment coefficient is determined based on the amplitude ratio, and the first call volume adjustment coefficient is negatively correlated with the amplitude ratio;

Adjusting the first signal amplitude of the first audio signal based on the call volume adjustment method, including:

The first signal amplitude of the first audio signal is adjusted based on the first call volume adjustment coefficient.

In a possible implementation manner, acquiring the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal includes:

obtaining the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal in the same frequency band;

Adjusting the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient includes:

The first signal amplitude of the first audio signal in each frequency band is adjusted based on the first call volume adjustment coefficient corresponding to each frequency band.

determining the human ear listening signal amplitude based on the first signal amplitude and the second signal amplitude;

Determine the first call volume adjustment coefficient based on the amplitude of the human ear listening signal, and the first call volume adjustment coefficient has a negative correlation with the human ear listening signal amplitude;

In a possible implementation manner, based on the first signal amplitude and the second signal amplitude, determining the human ear listening signal amplitude includes:

Based on the first signal amplitude and the second signal amplitude in each frequency band, determine the human ear listening signal amplitude in each frequency band;

Determine the first call volume adjustment coefficient based on the amplitude of the human ear listening signal, including:

Determine the first call volume adjustment coefficient corresponding to each frequency band based on the human ear listening signal amplitude in each frequency band;

In a possible implementation, the method further includes:

acquiring a third audio signal collected by the second microphone, where the third audio signal is an audio signal of ambient sound;

Determine the call volume adjustment method based on the first audio signal and the second audio signal, and adjust the volume of the first audio signal, including:

A call volume adjustment mode is determined based on the first audio signal, the second audio signal and the third audio signal, and the volume of the first audio signal is adjusted.

In a possible implementation manner, determining a call volume adjustment method based on the first audio signal, the second audio signal, and the third audio signal, and performing volume adjustment on the first audio signal, including:

acquiring the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal;

determining a call volume adjustment mode based on the first signal amplitude, the second signal amplitude and the third signal amplitude;

In a possible implementation manner, determining a call volume adjustment method based on the first signal amplitude, the second signal amplitude, and the third signal amplitude, including:

determining a first call volume adjustment coefficient based on the first signal amplitude and the second signal amplitude;

The second call volume adjustment coefficient is determined based on the third signal amplitude value, and the second call volume adjustment coefficient is positively correlated with the third signal amplitude value;

The first signal amplitude of the first audio signal is adjusted based on the first call volume adjustment coefficient and the second call volume adjustment coefficient.

In a possible implementation manner, acquiring the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal includes:

acquiring the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal and the third signal amplitude of the third audio signal in the same frequency band;

Adjusting the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient and the second call volume adjustment coefficient includes:

Based on the first call volume adjustment coefficient and the second call volume adjustment coefficient corresponding to the same frequency band, the first signal amplitude of the first audio signal in the frequency band is adjusted.

In the process of sound propagation, the volume (or loudness) will be attenuated, which means that the signal amplitude of the received audio signal is lower than that of the original audio signal, and the longer the propagation distance, the greater the reduction of the signal amplitude. Therefore, the terminal can indirectly measure the distance between the earpiece and the human ear according to the change of the signal amplitude between the first audio signal and the second audio signal. Exemplary embodiments are used for description below.

Please refer to FIG. 6 , which shows a flow chart of a method for adjusting a call volume provided by another exemplary embodiment of the present application. In this embodiment, the method is used for the terminal shown in FIG. 1 as an example for description. The method includes: :

Step 601 , during the call, output a first audio signal to the earpiece, and the earpiece is used to make a sound based on the first audio signal.

Step 602: Acquire a second audio signal collected by the first microphone, the second audio signal includes an audio signal of reflected sound, the reflected sound is formed by the sound emitted by the earpiece reflected at the target human body, and the target human body is the human body within the range of the earpiece facing. .

For the implementation of steps 601 to 602, reference may be made to steps 401 to 402, and details are not described herein again in this embodiment.

Step 603: Obtain the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal.

In this embodiment of the present application, the terminal obtains the signal amplitudes of the first audio signal and the second audio signal respectively, so as to indirectly determine the distance between the earpiece and the human ear based on changes in the signal amplitudes. Wherein, the terminal can obtain the signal amplitude of the adopted point at several sampling points by means of signal sampling, and determine the average value of the signal amplitude of the several sampling points as the signal amplitude of the audio signal. This embodiment limits the specific manner of determining the signal amplitude.

Step 604: Determine a call volume adjustment mode based on the first signal amplitude and the second signal amplitude.

Normally, the closer the sound propagation distance is, the closer the signal amplitude of the original audio signal and the received audio signal is, and the lower the sound attenuation is; on the contrary, the farther the sound propagation distance is, the signal amplitude of the original audio signal and the received audio signal is smaller. The greater the difference in value, the more severe the sound attenuation. Therefore, in this embodiment, the terminal can determine the propagation distance of the sound emitted by the earpiece based on the amplitude changes of the first signal amplitude and the second signal amplitude, and then determine the call volume adjustment method.

In a possible implementation, this step may include the following sub-steps:

1. Determine the amplitude ratio of the second signal amplitude to the first signal amplitude.

In this embodiment, the terminal determines the sound attenuation degree by calculating the amplitude ratio between the second signal amplitude and the first signal amplitude, wherein the amplitude ratio and the attenuation degree are negatively correlated.

In an illustrative example, when the amplitude of the first signal is 100 and the amplitude of the second signal is 50, the terminal determines that the amplitude ratio is 50/100=0.5.

2. Determine the first call volume adjustment coefficient based on the amplitude ratio, and the first call volume adjustment coefficient has a negative correlation with the amplitude ratio.

In a possible implementation, developers use artificial heads and terminals in advance to simulate call scenarios under different "earpiece-ear distances", so as to obtain the corresponding signals of the first audio signal and the second audio signal at different distances magnitude.

Further, for the same distance, the developers use different degrees of call volume adjustment methods to adjust the volume of the first audio signal, and use the microphone set at the artificial head to collect sound, so as to obtain different call volume adjustments at the human ear. The signal amplitude of the audio signal is used to determine the optimal call volume adjustment method at the current distance (in this adjustment method, the signal amplitude of the audio signal at the human ear meets the call requirements), and then the optimal call volume adjustment under different amplitude ratios is obtained. Way.

Optionally, different levels of call volume adjustment methods correspond to different first call volume adjustment coefficients, and the first call volume adjustment coefficient is used to indicate a scaling factor of the signal amplitude. Correspondingly, the terminal scales the signal amplitude of the first audio signal based on the first call volume adjustment coefficient, where the first call volume adjustment coefficient is a positive number.

In some embodiments, a corresponding relationship between the amplitude ratio and the first call volume adjustment coefficient is set in the terminal, and after determining the amplitude ratio of the first audio signal and the second audio signal, the terminal determines the amplitude ratio from the Find the corresponding first call volume adjustment coefficient in the corresponding relationship.

In an illustrative example, the corresponding relationship between the amplitude ratio and the first call volume adjustment coefficient is shown in Table 1.

Table I

In combination with the data shown in Table 1, when the amplitude ratio of the first audio signal and the second audio signal is 0.5, the terminal determines that the first call volume adjustment coefficient is 1.24.

In some other embodiments, the terminal may also set a functional relationship between the amplitude ratio and the first call volume adjustment coefficient (obtained by fitting the amplitude ratio measured in the development process and the optimal call volume adjustment coefficient) , so that the amplitude ratio is substituted into the functional relationship to calculate the first call volume adjustment coefficient.

Under the normal terminal holding posture, the distance between the terminal receiver and the human ear is in a specific distance range, and correspondingly, the amplitude ratio of the audio signal is in a specific ratio range (such as 0.3 to 0.9 in Table 1); while in the abnormal terminal In the holding posture, the distance between the terminal earpiece and the human ear is too far, resulting in a very small amplitude ratio of the audio signal. If you just adjust the first audio signal while holding the terminal in an abnormal posture, the volume of the sound from the earpiece may be too loud, making the content of the call easy to be heard by others, and even causing the earpiece to break. Therefore, in a possible implementation manner , when determining the first call volume adjustment coefficient based on the amplitude ratio, if the amplitude ratio is less than the ratio threshold (for example, 0.3), the terminal determines that it is currently in an abnormal terminal holding posture, so as to provide a text prompt after a preset method (such as vibration). ) to prompt, so that the user can adjust the holding posture of the terminal and bring the receiver close to the human ear.

Step 605: Adjust the first signal amplitude of the first audio signal based on the call volume adjustment method.

In a possible implementation manner, the terminal adjusts the first signal amplitude of the first audio signal based on the determined first call volume adjustment coefficient, thereby adjusting the volume of the sound at the human ear. Wherein, when the first call volume adjustment coefficient is less than 1, the terminal reduces the first signal amplitude of the first audio signal, thereby reducing the volume of the sound at the human ear, so as to prevent the call volume from being too large; when the first call volume adjustment coefficient is greater than When the value is 1, the terminal increases the first signal amplitude of the first audio signal, thereby increasing the volume of the sound at the human ear and preventing the volume of the call from being too low.

Optionally, the terminal may adjust the signal gain of the first audio signal based on the first call volume adjustment coefficient, so as to realize the adjustment of the signal amplitude of the first audio signal.

It should be noted that since audio signals of different frequencies have different attenuation rates during the propagation process, if the audio signals of each frequency band are adjusted uniformly, good listening quality cannot be achieved in each frequency band. Therefore, in order to further improve the listening quality of the sound in each frequency band during the call, in a possible implementation, the audio signal within the listening range of the human ear is pre-divided into several frequency bands, and when the first audio signal and the second audio signal are acquired When the signal amplitude is 1, the terminal obtains the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal in the same frequency band, so as to determine the amplitude of the first audio signal and the second audio signal in different frequency bands ratio, and then based on the first call volume adjustment coefficient corresponding to different frequency bands (developers need to test each frequency band in advance).

Correspondingly, in the process of adjusting the first audio signal, the terminal adjusts the first signal amplitude of the first audio signal in each frequency band based on the first call volume adjustment coefficient corresponding to each frequency band, and finally performs the adjustment on the adjusted audio signal in each frequency band. Fusion to obtain the first audio signal after the call volume is adjusted.

The process of adjusting the call volume of the first audio signal can be expressed as:

Wherein, O is the adjusted first audio signal, I _fi is the original first audio signal of the ith frequency band, a _i is the first call volume adjustment coefficient corresponding to the ith frequency band, and n is the number of frequency bands.

Step 606: Output the volume-adjusted first audio signal to the earpiece.

For the implementation of this step, reference may be made to step 404, and details are not described herein again in this embodiment.

In this embodiment, based on the characteristic that the change degree of the signal amplitude is related to the sound propagation distance, the terminal obtains the respective signal amplitudes of the original audio signal (the first audio signal) and the reflected audio signal (the second audio signal), so as to obtain the signal amplitude based on the The amplitude ratio of the signal amplitude dynamically determines the call volume adjustment coefficient, and then adjusts the signal amplitude of the original audio signal based on the call volume adjustment coefficient to ensure that the human ear can achieve a good listening effect under different "earpiece-ear" distances. Improve call quality.

In addition, in this embodiment, for audio signals of different frequency bands, the terminal determines the first call volume adjustment coefficient corresponding to each frequency band, so as to perform targeted call volume adjustment on the audio signals of each frequency band based on the first call volume adjustment coefficient, and further Improves the listening quality of sounds in each frequency band during a call.

In addition to adjusting the call volume based on the amplitude ratio of the audio signal, in another possible implementation manner, the terminal may, based on the first signal amplitude and the second signal amplitude, monitor the human ear listening signal amplitude to the human ear. Prediction is performed so as to adaptively adjust the first audio signal output to the earpiece based on the amplitude of the human ear listening signal. Optionally, the process may include the following steps:

1. Determine the amplitude of the human ear listening signal based on the first signal amplitude and the second signal amplitude.

In a possible implementation, developers use artificial heads and terminals in advance to simulate call scenarios under different "earpiece-ear distances", so as to obtain the corresponding signals of the first audio signal and the second audio signal at different distances amplitude, and use the microphone set at the artificial head human ear to collect sound to obtain the human ear listening signal amplitude at the human ear, and then determine the functional relationship between the first signal amplitude, the second signal amplitude and the human ear listening signal amplitude .

Optionally, during the call, the terminal predicts the amplitude of the human ear listening signal based on the amplitude of the first signal, the amplitude of the second signal, and the above-mentioned functional relationship.

In an illustrative example, the terminal determines, based on the first signal amplitude value of 100 and the second signal amplitude value of 50, that the human ear listening signal amplitude at the human ear is 80.

2. Determine the first call volume adjustment coefficient based on the amplitude of the human ear listening signal, and the first call volume adjustment coefficient has a negative correlation with the human ear listening signal amplitude.

Optionally, after determining the amplitude of the human ear listening signal, the terminal determines the first call volume adjustment coefficient based on the amplitude ratio between the human ear listening signal amplitude and the standard listening signal amplitude, where if the amplitude ratio is less than 1. The determined first call volume adjustment coefficient is greater than 1, and the terminal needs to reduce the signal amplitude of the first audio signal based on the first call volume adjustment coefficient, so as to reduce the human ear listening signal amplitude and avoid the volume of the sound at the human ear. Too high; if the amplitude ratio is greater than 1, the determined first call volume adjustment coefficient is less than 1, and the terminal needs to increase the signal amplitude of the first audio signal based on the first call volume adjustment coefficient, so as to increase the human ear listening signal amplitude , so that the volume of the sound at the human ear is not too low.

Optionally, different users correspond to different standard listening signal amplitudes.

In a possible implementation, the developer uses different call volume adjustment parameters to adjust the volume of the first audio signal, and collects the human ear listening signal amplitude at the human ear, so as to determine the effect of different call volume adjustment parameters on the human ear. The degree of influence of the amplitude of the ear listening signal (the functional relationship can be obtained by fitting). The subsequent terminal dynamically determines the first call volume adjustment coefficient based on the degree of influence of the call volume adjustment parameter on the amplitude of the signal heard by the human ear.

Similar to the above embodiment, since audio signals of different frequencies have different attenuation rates during the propagation process, in order to further improve the listening quality of the sound in each frequency band during the call, in a possible implementation, the listening range of the human ear is The audio signal is pre-divided into several frequency bands. When acquiring the signal amplitudes of the first audio signal and the second audio signal, the terminal acquires the first signal amplitude of the first audio signal and the first signal amplitude of the second audio signal in the same frequency band. Two signal amplitudes, so that based on the first signal amplitude and the second signal amplitude in each frequency band, the human ear listening signal amplitude in each frequency band is determined, and then based on the human ear listening signal amplitude in each frequency band, each frequency is determined. The first call volume adjustment coefficient corresponding to the frequency band.

In order to verify the effect of the solutions provided by the embodiments of the present application in improving the call quality, the artificial head is used to respectively monitor the listening situation at the human ear under the standard terminal holding posture, and the non-standard terminal holding posture (compared to the standard terminal holding posture) There is an angular deviation of 5°) the listening situation at the human ear when the solution provided by the embodiment of the present application is not adopted, and the listening situation at the human ear when the solution provided by the embodiment of the present application is adopted under the non-standard terminal holding posture. The test results are shown in Figure 7. It can be seen from FIG. 7 that after applying the solution provided by the embodiment of the present application, even in the non-standard terminal holding posture, the call quality similar to that in the non-standard terminal holding posture can still be achieved, and compared with the non-standard terminal holding posture In the solution provided by the application embodiment, the receiving gain at the human ear is increased by about 3.5db, and the listening quality is significantly improved.

In the foregoing embodiments, the terminal performs feedback adjustment based on the reflected sound received by the first microphone. In the actual application process, it is found that in addition to the holding posture of the terminal, the call environment in which it is located will also affect the call quality. Therefore, in order to further improve the call quality, as shown in Figures 1 and 2, the terminal also needs to acquire the ambient sound collected by the second microphone 105 during the call, so as to perform feedback adjustment based on the reflected sound and the ambient sound. Illustrative embodiments are used for description below.

Please refer to FIG. 8 , which shows a flow chart of a method for adjusting a call volume provided by another exemplary embodiment of the present application. In this embodiment, the method is used for the terminal shown in FIG. 1 as an example for description. The method includes: :

Step 801 , during the call, output a first audio signal to the earpiece, and the earpiece is used to make a sound based on the first audio signal.

Step 802: Acquire a second audio signal collected by the first microphone. The second audio signal includes an audio signal of a reflected sound. The reflected sound is formed by the sound emitted by the earpiece being reflected at the target human body, and the target human body is a human body within the range of the earpiece. .

For the implementation of the foregoing steps 801 to 802, reference may be made to steps 401 to 402, and details are not described herein again in this embodiment.

Step 803: Obtain a third audio signal collected by the second microphone, where the third audio signal is an audio signal of ambient sound.

In this embodiment, the terminal collects the ambient sound through the second microphone, so as to determine the intensity of the ambient noise in the current environment based on the audio signal of the ambient sound.

Step 804: Determine a call volume adjustment mode based on the first audio signal, the second audio signal, and the third audio signal, and adjust the volume of the first audio signal.

On the basis of adjusting the call volume based on the first audio signal and the second audio signal to adapt to the "earpiece-ear distance", in this embodiment, the terminal also adjusts the call volume based on the third audio signal to adapt to the The ambient noise of the current call environment. In a possible implementation manner, this step may include the following sub-steps.

1. Obtain the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal.

Similar to the above-mentioned embodiment, the terminal obtains the respective signal amplitudes corresponding to the first audio signal, the second audio signal, and the third audio signal. For the specific acquisition method of the signal amplitude, reference may be made to the foregoing embodiment, which will not be repeated in this embodiment.

2. Determine the call volume adjustment mode based on the first signal amplitude, the second signal amplitude and the third signal amplitude.

In this embodiment, the adjustment of the call volume includes two parts: 1. Volume adjustment based on the distance between the earpiece and the human ear; 2. Volume adjustment based on ambient sound.

When performing volume adjustment based on the distance between the earpiece and the human ear, the terminal determines a first call volume adjustment coefficient based on the first signal amplitude and the second signal amplitude, and uses the first call volume adjustment coefficient as a basis for subsequent volume adjustment. Wherein, for the process of determining the first call volume adjustment coefficient, reference may be made to the foregoing embodiment, and details are not described herein again in this embodiment.

When performing volume adjustment based on the ambient sound, the terminal determines a second call volume adjustment coefficient based on the third signal amplitude value, and uses the second call volume adjustment coefficient as a basis for subsequent volume adjustment. The second call volume adjustment coefficient is a positive number, and the second call volume adjustment coefficient has a positive correlation with the third signal amplitude, that is, the higher the volume of the ambient sound (that is, the larger the third signal amplitude), the higher the second call volume. The larger the volume adjustment coefficient is, the larger the adjustment range is when the volume adjustment is subsequently adjusted based on the second call volume adjustment coefficient.

In a possible implementation, developers use artificial heads and terminals in advance to simulate call scenarios in different environments (playing ambient sounds with different signal amplitudes), and use different call volume adjustment coefficients to adjust the volume of the first audio signal. adjust. Use the microphone set at the artificial head and the human ear to collect sound, and analyze the sound collected at the human ear to determine the optimal call volume adjustment coefficient in different environments (for example, the call sound at the human ear corresponds to the ambient sound) The call volume adjustment coefficient used when the signal amplitude difference of the audio signal is greater than the amplitude difference value is determined as the optimal call volume adjustment coefficient). Further, by fitting the signal amplitude of the ambient sound and the optimal call volume adjustment coefficient, the functional relationship between the third signal amplitude and the second call volume adjustment coefficient is determined.

In an illustrative example, the corresponding relationship between the third signal amplitude and the second call volume adjustment coefficient is shown in Table 2.

Table II

For example, when the third signal amplitude of the received third audio signal is 30, the terminal determines that the second call volume adjustment coefficient is 0.1, that is, the current first signal amplitude needs to be increased by 10%.

3. Adjust the first signal amplitude of the first audio signal based on the call volume adjustment method.

In a possible implementation manner, the terminal adjusts the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient and the second call volume adjustment coefficient.

As shown in FIG. 9 , after the chip 91 outputs the first audio signal to the earpiece 92, the earpiece 92 emits sound based on the first audio signal, the first microphone 93 collects the reflected sound, and outputs the second audio signal to the chip 91; At the same time, the second microphone 94 collects ambient sound, and the refrigerator chip 91 outputs a third audio signal. The chip 91 determines the first call volume adjustment coefficient 95 based on the first audio signal and the second audio signal, and determines the second call volume adjustment coefficient 96 based on the third audio signal, so as to use both to adjust the signal amplitude of the first audio signal. value, and output the adjusted first audio signal to form a complete adjustment feedback chain.

It should be noted that since audio signals of different frequencies have different attenuation rates during the propagation process, if the audio signals of each frequency band are adjusted uniformly, good listening quality cannot be achieved in each frequency band. Therefore, in order to further improve the listening quality of the sound in each frequency band during the call, in a possible implementation, the audio signal within the listening range of the human ear is pre-divided into several frequency bands. and the signal amplitude of the third audio signal, the terminal obtains the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal in the same frequency band, thereby Determine the first call volume adjustment coefficient and the second call volume adjustment coefficient corresponding to the same frequency band.

Further, in the process of adjusting the first audio signal, the terminal adjusts the first signal amplitude of the first audio signal in each frequency band based on the first call volume adjustment coefficient corresponding to each frequency band and the second call volume adjustment system, and finally adjusts the first signal amplitude of each frequency band. The down-adjusted audio signals are fused to obtain a first audio signal whose call volume is adjusted.

Wherein, Ο is the adjusted first audio signal, I _fi is the original first audio signal of the ith frequency band, a _i is the first call volume adjustment coefficient corresponding to the ith frequency band, b _i is the second corresponding to the ith frequency band Call volume adjustment factor, n is the number of frequency bands.

Step 805: Output the volume-adjusted first audio signal to the earpiece.

In this embodiment, on the basis of adjusting the call volume based on the “earpiece-ear” distance, further adjusting the call volume based on the ambient sound collected by the second microphone is helpful to improve the call quality in a noisy environment, and can Avoid disturbing others due to the loud earphone volume in a quiet environment.

In order to further verify the effect of the solutions provided by the embodiments of the present application in improving call quality in a noisy environment, an artificial head was used to measure the listening conditions of the human ear when the solutions provided by the embodiments of the present application were not used in a noisy environment, and the listening conditions of the human ears when the solutions provided by the embodiments of the present application were not used in a noisy environment. When the solution provided by the application example is tested, the listening condition at the human ear is tested, and the obtained test result is shown in FIG. 10 . It can be seen from FIG. 10 that after applying the solution provided by the embodiments of the present application, the receiving gain at the human ear is improved in a noisy environment, especially in the high frequency band (the high frequency band is increased by 6db), and the listening quality in the noisy environment is improved. significantly improved.

The following are apparatus embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 11 , which shows a structural block diagram of an apparatus for adjusting the volume of a call provided by an embodiment of the present application. As shown in Figure 11, the apparatus may include:

a signal output module 1101, configured to output a first audio signal to an earpiece during a call, where the earpiece is used to make a sound based on the first audio signal;

The first signal acquisition module 1102 is configured to acquire a second audio signal collected by the first microphone, where the second audio signal includes an audio signal of a reflected sound, and the reflected sound is the sound emitted by the earpiece reflected at the target human body After forming, the target human body is the human body within the range of the earpiece;

A volume adjustment module 1103, configured to determine a call volume adjustment mode based on the first audio signal and the second audio signal, and perform volume adjustment on the first audio signal;

The signal output module 1101 is further configured to output the volume-adjusted first audio signal to the earpiece.

Optionally, the volume adjustment module 1103 includes:

an amplitude acquisition unit, configured to acquire a first signal amplitude of the first audio signal and a second signal amplitude of the second audio signal;

an adjustment mode determination unit, configured to determine the call volume adjustment mode based on the first signal amplitude value and the second signal amplitude value;

An adjustment unit, configured to adjust the first signal amplitude of the first audio signal based on the call volume adjustment method.

Optionally, the adjustment mode determination unit is used for:

determining an amplitude ratio of the second signal amplitude to the first signal amplitude;

A first call volume adjustment coefficient is determined based on the amplitude ratio, and the first call volume adjustment coefficient is negatively correlated with the amplitude ratio;

Adjustment unit for:

Optionally, the amplitude acquisition unit is also used to:

acquiring the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal in the same frequency band;

The adjustment unit is also used for:

Optionally, the adjustment mode determining unit is also used for:

determining a human ear listening signal amplitude based on the first signal amplitude and the second signal amplitude;

determining a first call volume adjustment coefficient based on the human ear listening signal amplitude, and the first call volume adjustment coefficient is in a negative correlation with the human ear listening signal amplitude;

Adjustment unit, also used for:

Optionally, the adjustment mode determining unit is also used for:

determining the human ear listening signal amplitude in each frequency band based on the first signal amplitude and the second signal amplitude in each frequency band;

determining the first call volume adjustment coefficient corresponding to each frequency band based on the human ear listening signal amplitude in each frequency band;

Adjustment unit, also used for:

Optionally, the device further includes:

The second signal acquisition module is used to acquire the third audio signal collected by the second microphone, and the third audio signal is the audio signal of ambient sound;

The volume adjustment module 1103 is used for:

The call volume adjustment mode is determined based on the first audio signal, the second audio signal and the third audio signal, and the volume of the first audio signal is adjusted.

Optionally, the volume adjustment module 1103 includes:

an amplitude acquisition unit, configured to acquire a first signal amplitude of the first audio signal, a second signal amplitude of the second audio signal, and a third signal amplitude of the third audio signal;

an adjustment mode determination unit, configured to determine the call volume adjustment mode based on the first signal amplitude value, the second signal amplitude value and the third signal amplitude value;

Optionally, the adjustment mode determination unit is used for:

A second call volume adjustment coefficient is determined based on the third signal amplitude value, and the second call volume adjustment coefficient is positively correlated with the third signal amplitude value;

The adjustment unit is used for:

Optionally, the amplitude acquisition unit is also used to:

acquiring the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal in the same frequency band;

The adjustment unit is also used for:

The first signal amplitude of the first audio signal in the frequency band is adjusted based on the first call volume adjustment coefficient and the second call volume adjustment coefficient corresponding to the same frequency band.

Optionally, the device further includes:

a call mode determination module, configured to determine a current call mode, where the call mode includes at least one of a hand-held call, a headset call, and an external call;

A turning-on module, configured to turn on the earpiece and the first microphone in response to the current call mode being a hand-held call.

It should be noted that: when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. The internal structure is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Please refer to FIG. 12, which shows a structural block diagram of a terminal provided by an exemplary embodiment of the present application. The terminal 1200 may be an electronic device with a call function, such as a smart phone. The terminal 1200 in this application may include one or more of the following components: a processor 1210 , a memory 1220 , an earpiece 1230 and at least one microphone 1240 .

Processor 1210 may include one or more processing cores. The processor 1210 uses various interfaces and lines to connect various parts of the entire terminal 1200, and executes the terminal by running or executing the instructions, programs, code sets or instruction sets stored in the memory 1220, and calling the data stored in the memory 1220. 1200's various functions and processing data. Optionally, the processor 1210 may adopt at least one of a digital signal processing (Digital Signal Processing, DSP), a Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), and a Programmable Logic Array (Programmable Logic Array, PLA). A hardware form is implemented. The processor 1210 may integrate one or more of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU), a neural network processor (Neural-network Processing Unit, NPU), and a modem, etc. The combination. Among them, the CPU mainly handles the operating system, user interface and applications; the GPU is used to render and draw the content that needs to be displayed on the touch screen; the NPU is used to implement artificial intelligence (AI) functions; the modem is used to process Wireless communication. It can be understood that, the above-mentioned modem may not be integrated into the processor 1210, but is implemented by a single chip.

The memory 1220 may include random access memory (Random Access Memory, RAM), or may include read-only memory (Read-Only Memory, ROM). Optionally, the memory 1220 includes a non-transitory computer-readable storage medium. Memory 1220 may be used to store instructions, programs, codes, sets of codes, or sets of instructions. The memory 1220 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), Instructions and the like for implementing the following method embodiments; the storage data area may store data (such as audio data, phone book) and the like created according to the use of the terminal 1200 .

The earpiece 1230 is a speaker used to play the voice of the peer end during a call. Usually, the earpiece 1230 is set on the top of the front panel of the terminal 1200. The microphone 1240 is a component for collecting sound. In this embodiment of the present application, the microphone 1240 includes a first microphone disposed adjacent to the earpiece 1230, and is used to collect the reflected sound formed by the reflection of the human body during the call; the microphone 1240 may also include The second microphone is used to collect ambient sound during a call.

Optionally, the earpiece 1230 and the microphone 1240 are connected to the processor 1210 through an audio circuit, the microphone 1240 passes the audio signal to the processor 1210 for processing through the audio circuit, and the earpiece 1230 receives the audio signal output by the processor 1210 through the audio circuit, thereby Make a sound.

In addition, those skilled in the art can understand that the structure of the terminal 1200 shown in the above drawings does not constitute a limitation on the terminal, and the terminal may include more or less components than those shown in the drawings, or combine some components , or a different component arrangement. For example, the terminal 1200 also includes components such as a display screen, a sensor, and a power supply, which are not described herein again.

Embodiments of the present application further provide a computer-readable storage medium, where at least one piece of program code is stored in the computer-readable storage medium, and the program code is loaded and executed by a processor to implement the volume control of the call volume described in the various embodiments above. adjustment method.

According to one aspect of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the terminal reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the terminal executes the method for adjusting the call volume provided in various optional implementation manners of the foregoing aspects.

It should be understood that references herein to "a plurality" means two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship. In addition, the numbering of the steps described in this document only exemplarily shows a possible execution sequence between the steps. In some other embodiments, the above steps may also be executed in different order, such as two different numbers. The steps are performed at the same time, or two steps with different numbers are performed in a reverse order to that shown in the figure, which is not limited in this embodiment of the present application.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A method for adjusting a call volume, the method comprising:

During the call, output a first audio signal to the earpiece, where the earpiece is used to make a sound based on the first audio signal;

Acquire a second audio signal collected by the first microphone, where the second audio signal includes an audio signal of a reflected sound, and the reflected sound is formed after the sound emitted by the earpiece is reflected at the target human body, and the target human body is the earpiece towards the human body within range;

Determine a call volume adjustment mode based on the first audio signal and the second audio signal, and perform volume adjustment on the first audio signal;

The volume-adjusted first audio signal is output to the earpiece.
The method according to claim 1, wherein the determining a call volume adjustment mode based on the first audio signal and the second audio signal, and performing volume adjustment on the first audio signal, comprises:

acquiring a first signal amplitude of the first audio signal and a second signal amplitude of the second audio signal;

determining the call volume adjustment mode based on the first signal amplitude and the second signal amplitude;

The first signal amplitude of the first audio signal is adjusted based on the call volume adjustment method.
The method according to claim 2, wherein the determining the call volume adjustment mode based on the first signal amplitude and the second signal amplitude comprises:

determining an amplitude ratio of the second signal amplitude to the first signal amplitude;

A first call volume adjustment coefficient is determined based on the amplitude ratio, and the first call volume adjustment coefficient is negatively correlated with the amplitude ratio;

The adjusting the first signal amplitude of the first audio signal based on the call volume adjustment method includes:

The first signal amplitude of the first audio signal is adjusted based on the first call volume adjustment coefficient.
The method according to claim 3, wherein the acquiring the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal comprises:

acquiring the first signal amplitude of the first audio signal and the second signal amplitude of the second audio signal in the same frequency band;

The adjusting the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient includes:

The first signal amplitude of the first audio signal in each frequency band is adjusted based on the first call volume adjustment coefficient corresponding to each frequency band.
The method according to claim 2, wherein the determining the call volume adjustment mode based on the first signal amplitude and the second signal amplitude comprises:

determining a human ear listening signal amplitude based on the first signal amplitude and the second signal amplitude;

determining a first call volume adjustment coefficient based on the human ear listening signal amplitude, and the first call volume adjustment coefficient is in a negative correlation with the human ear listening signal amplitude;

The adjusting the first signal amplitude of the first audio signal based on the call volume adjustment method includes:

The first signal amplitude of the first audio signal is adjusted based on the first call volume adjustment coefficient.
The method according to claim 5, wherein the determining a human ear listening signal amplitude based on the first signal amplitude and the second signal amplitude comprises:

determining the human ear listening signal amplitude in each frequency band based on the first signal amplitude and the second signal amplitude in each frequency band;

The determining the first call volume adjustment coefficient based on the amplitude of the human ear listening signal includes:

determining the first call volume adjustment coefficient corresponding to each frequency band based on the human ear listening signal amplitude in each frequency band;

The adjusting the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient includes:

The first signal amplitude of the first audio signal in each frequency band is adjusted based on the first call volume adjustment coefficient corresponding to each frequency band.
The method of claim 1, wherein the method further comprises:

acquiring a third audio signal collected by the second microphone, where the third audio signal is an audio signal of ambient sound;

The determining a call volume adjustment mode based on the first audio signal and the second audio signal, and performing volume adjustment on the first audio signal, includes:

The call volume adjustment mode is determined based on the first audio signal, the second audio signal and the third audio signal, and the volume of the first audio signal is adjusted.
The method according to claim 7, wherein the call volume adjustment mode is determined based on the first audio signal, the second audio signal and the third audio signal, and the first audio signal is Make volume adjustments, including:

acquiring a first signal amplitude of the first audio signal, a second signal amplitude of the second audio signal, and a third signal amplitude of the third audio signal;

determining the call volume adjustment mode based on the first signal amplitude, the second signal amplitude and the third signal amplitude;

The first signal amplitude of the first audio signal is adjusted based on the call volume adjustment method.
The method according to claim 8, wherein the determining the call volume adjustment mode based on the first signal amplitude, the second signal amplitude and the third signal amplitude comprises:

determining a first call volume adjustment coefficient based on the first signal amplitude and the second signal amplitude;

A second call volume adjustment coefficient is determined based on the third signal amplitude value, and the second call volume adjustment coefficient is positively correlated with the third signal amplitude value;

The adjusting the first signal amplitude of the first audio signal based on the call volume adjustment method includes:

The first signal amplitude of the first audio signal is adjusted based on the first call volume adjustment coefficient and the second call volume adjustment coefficient.
9. The method of claim 9, wherein the obtaining a first signal amplitude of the first audio signal, a second signal amplitude of the second audio signal, and a third signal of the third audio signal Amplitude, including:

acquiring the first signal amplitude of the first audio signal, the second signal amplitude of the second audio signal, and the third signal amplitude of the third audio signal in the same frequency band;

The adjusting the first signal amplitude of the first audio signal based on the first call volume adjustment coefficient and the second call volume adjustment coefficient includes:

The first signal amplitude of the first audio signal in the frequency band is adjusted based on the first call volume adjustment coefficient and the second call volume adjustment coefficient corresponding to the same frequency band.
The method according to any one of claims 1 to 10, wherein the method further comprises:

determining a current call mode, the call mode includes at least one of a hand-held call, a headset call, and an external call;

In response to the current call mode being a hand-held call, the earpiece and the first microphone are turned on.
A device for adjusting the volume of a call, the device comprising:

a signal output module, configured to output a first audio signal to an earpiece during a call, where the earpiece is used to make a sound based on the first audio signal;

The first signal acquisition module is used to acquire the second audio signal collected by the first microphone, the second audio signal includes the audio signal of the reflected sound, and the reflected sound is the sound emitted by the earpiece after being reflected at the target human body Formed, the target human body is the human body within the scope of the earpiece;

a volume adjustment module, configured to determine a call volume adjustment mode based on the first audio signal and the second audio signal, and perform volume adjustment on the first audio signal;

The signal output module is further configured to output the volume-adjusted first audio signal to the earpiece.
A terminal, the terminal includes a processor, a memory, an earpiece and at least one microphone, the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement claims 1 to 11 Any of the described methods for adjusting the volume of a call.
A computer-readable storage medium, which stores at least one piece of program code, the program code is loaded and executed by a processor to realize the call volume according to any one of claims 1 to 11. adjustment method.
A computer program product comprising computer instructions stored in a computer-readable storage medium; a processor of a computer device reading the computer instructions from the computer-readable storage medium, the The processor executes the computer instructions to implement the method for adjusting the call volume according to any one of claims 1 to 11.