WO2023070792A1

WO2023070792A1 - Volume balancing method and device for talk-on doorbell, and readable storage medium

Info

Publication number: WO2023070792A1
Application number: PCT/CN2021/132597
Authority: WO
Inventors: 杨华泽; 赵江涛; 张文松
Original assignee: 歌尔科技有限公司
Priority date: 2021-10-26
Filing date: 2021-11-24
Publication date: 2023-05-04
Also published as: CN113963716A

Abstract

A volume balancing method, apparatus and device for a talk-on doorbell, and a readable storage medium. The method comprises: acquiring an audio signal and an initial volume value of the audio signal (S10); acquiring a sample audio signal and an average volume value of the sample audio signal from the audio signal (S20); determining a preset volume interval to which the average volume value belongs (S30); determining, according to the preset volume interval, a volume gain corresponding to the average volume value (S40); and adjusting the initial volume value according to the volume gain to obtain a first balanced volume value corresponding to the audio signal (S50). The method solves the technical problem in the prior art of volume imbalance after gain adjustment.

Description

Volume equalization method, device and readable storage medium of talking doorbell

This application claims the priority of the Chinese patent application with the application number 202111250855.6 and the title of the invention "Volume Equalization Method, Device and Readable Storage Medium for Talking Doorbell" submitted to the China Patent Office on October 26, 2021, the entire content of which Incorporated in this application by reference.

technical field

The present application relates to the technical field of audio processing, in particular to a volume equalization method, device and readable storage medium of a talking doorbell.

Background technique

Talking doorbell is a doorbell product that can talk. Users make voice calls inside and outside the house through the microphone and speaker fixed on the doorbell. Usually, the volume value of the audio signal is increased uniformly with a fixed gain to ensure the transmission of the sound signal. However, due to It is impossible to limit the distance between the sound source and the microphone, the volume of the sound source, the processing of the sound source by the input side of the sound source, etc., so that we cannot guarantee the volume value of the input audio. When the volume of the input audio cannot be estimated, if the fixed gain is large , when the volume of the input audio itself is high, the volume may be too high, which will not only affect the normal hearing effect and cause noise, distortion, etc., but may also cause hardware loss and shorten the service life of the hardware device, but if the fixed gain is small , for the case where the volume of the input audio itself is low, the receiver may not be able to hear the specific information of the voice clearly, and cannot accurately convey the voice information, that is, the volume after the gain adjustment is unbalanced.

Contents of the invention

The main purpose of this application is to provide a volume equalization method, device and readable storage medium of a talking doorbell, aiming to solve the technical problem of unbalanced volume after gain adjustment in the prior art.

In order to achieve the above purpose, the present application provides a volume equalization method of a talking doorbell, the volume equalization method of the talking doorbell includes:

Obtain an audio signal and an initial volume value of the audio signal;

obtaining a sample audio signal and an average volume value of the sample audio signal from the audio signal;

determining a preset volume interval to which the average volume value belongs;

determining a volume gain corresponding to the average volume value according to the preset volume interval;

The initial volume value is adjusted according to the volume gain to obtain a first balanced volume value corresponding to the audio signal.

The present application also provides a volume equalization device for a talking doorbell, which includes:

An audio signal acquisition module, configured to acquire an audio signal and an initial volume value of the audio signal;

A sample audio signal acquisition module, configured to acquire a sample audio signal and an average volume value of the sample audio signal from the audio signal;

A volume interval determination module, configured to determine the preset volume interval to which the average volume value belongs;

A volume gain determination module, configured to determine the volume gain corresponding to the average volume value according to the preset volume interval;

A volume equalization module, configured to adjust the initial volume value according to the volume gain to obtain a first equalized volume value corresponding to the audio signal.

The present application also provides a volume equalization device for a talking doorbell, which includes a processor and a volume equalization device for a talking doorbell that is stored in the processor and can run on the processor. program, wherein, when the volume equalization program of the talking doorbell is executed by the processor, the steps of the above-mentioned volume equalization method for the talking doorbell are realized.

The present application also provides a readable storage medium, on which a program for realizing the volume equalization method of the talking doorbell is stored, and the program for realizing the volume equalizing method of the talking doorbell is executed by a processor to realize the following: The steps of the volume equalization method of the above-mentioned talking doorbell.

The present application provides a volume equalization method, device and readable storage medium of a call-type doorbell. The initial volume value of the sample audio signal and the average volume value of the sample audio signal are obtained from the audio signal to realize the determination of a representative sample audio signal, by determining the preset volume to which the average volume value belongs interval, the volume gain corresponding to the average volume value is determined according to the preset volume interval, and different volume gains are determined for sample audio signals belonging to different volume intervals, and the initial volume value is adjusted according to the volume gain , the first equalized volume value corresponding to the audio signal is obtained, and the volume gain determined by the average volume value of the sample audio signal is used to balance and adjust the initial volume value of the entire audio signal, and then the volume gain of the sample audio signal is realized. The volume value determines the volume gain required for the volume value of the overall audio signal, overcomes the technical problem that the volume value of the output audio may be unbalanced due to the difference in the source of the fixed gain, and realizes the automatic volume of audio signals with different volume values balanced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only The accompanying drawings are a part of this application. For those skilled in the art, other drawings can be obtained according to the provided drawings without creative work.

Fig. 1 is the schematic flow chart of an embodiment of the volume equalization method of the application's talking doorbell;

Fig. 2 is the schematic flow chart of another embodiment of the volume equalization method of the talking doorbell of the present application;

FIG. 3 is a schematic diagram of the device structure of the hardware operating environment involved in the volume equalization of the talking doorbell in the embodiment of the present application.

The realization of the purpose, functions and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The volume equalization method of the talking doorbell is mainly used in the short conversation talking doorbell that uses the speaker to play and the microphone to receive. The distance between the person and the microphone and the volume of the sound may be different, but the volume of the voice in the same conversation is usually relatively stable. Therefore, the volume value of the representative target audio signal represents the volume value of the entire audio, and according to the The volume value is used as the reference to adjust the gain of the entire audio volume value. The implementation process is simple and fast, does not rely on hardware, does not require new accessories, devices, etc., and can effectively balance the volume values of different sizes before outputting.

The embodiment of the present application provides a volume equalization method for a talking doorbell. In the first embodiment of the volume equalization method for a talking doorbell in the present application, referring to FIG. 1 , the volume equalizing method for a talking doorbell includes:

Step S10, acquiring an audio signal and an initial volume value of the audio signal;

In this embodiment, it should be noted that sound is a wave generated by the vibration of an object, and this wave can be transformed into a time-continuous voltage wave, and the change law of this voltage wave and its corresponding original wave is Consistent, so the sound signal can be simulated by this voltage wave. This simulated sound signal is the audio signal. The audio signal is the information carrier of the voltage wave wavelength and intensity change. The sound signal is simulated by the recording device It is converted into an electrical signal, that is, an audio signal, and then the audio signal is transmitted to the speaker, and then the speaker vibrates to generate sound, the audio signal can be converted into sound, and then the sound is transferred from one audio device to another. The volume equalization method of the talking doorbell in this embodiment can be used to convert the voice signal received by the own microphone of the talking doorbell into an audio signal and then process it, and can also process other audio signals received by the own speaker of the talking doorbell. The audio signal transmitted by the audio equipment is processed; the volume is also called sound intensity or loudness, which refers to the subjective feeling of the human ear on the strength of the sound heard. The objective evaluation scale is the amplitude of the sound. The larger the amplitude, the stronger the intensity. Higher, the louder the sound, the greater the volume; the volume value is a value used to quantify the volume, which can be represented by sound pressure level, sound intensity level, loudness value or amplitude value, etc., this embodiment does not be restricted.

Specifically, the audio signal is obtained, and the amplitude of each audio sample of the audio signal is obtained, and the amplitude is used as the initial volume value of the audio signal, or the amplitude is calculated and converted into a sound pressure level, a sound intensity level or a loudness level , the sound pressure level, sound intensity level or loudness level is used as the initial volume value of the audio signal. The initial audio signal generated by the recording device can be processed. It is easy to understand that the initial volume value is the volume value of the audio signal obtained from the signal transmission process, which can be the original volume value received by the recording device, or It is the volume value of the recording device after processing such as gain, filtering, modification or superposition, or the volume value after encoding and compression processing, or the volume value of the audio output device after processing such as gain, filtering, modification and/or superposition value, etc., which are not limited in this embodiment.

Step S20, acquiring a sample audio signal and an average volume value of the sample audio signal from the audio signal;

In this embodiment, specifically, the sample audio signal is obtained from the audio signal according to the preset number and time period of the sample audio signal, and the volume value of each sample data is obtained according to the sample data of the sample audio signal, and then Calculate the average volume value of all target audio signals, wherein the number and time period of the sample audio signal can be determined by experience, common sense and/or test results, etc., the number is at least one, and the length of the time period of each sample audio signal It can be the same or different. The earlier the start time of the time period, the earlier the receiver receives the volume gain, the shorter the delay during the call, the faster and timely the information transmission, and the specific time to obtain the sample audio signal. The method can be to acquire a preset number of sample audio signals from a preset time period, or start to acquire a preset time length of sample audio signals from a certain moment, or start to acquire samples of the same or different preset time lengths from multiple times Audio signal (for example: acquire any three audio signals with a length of 1ms from 0ms to 5ms; 1s to 1s+1ms, 1s+1ms to 1s+4ms, 1s+6ms to 1s+8ms and 1s+9ms to 1s+ 11ms four-segment audio signal; start to acquire 8ms audio signal from the 2s, etc.).

In this embodiment, by replacing the whole with samples, the overall volume value of the audio signal can be obtained from the samples effectively and quickly, so that the volume gain can be obtained quickly and accurately, and the speed and accuracy of volume equalization can be improved. , compared to dividing the volume interval and adjusting the volume gain for each sampled data, it can reduce the amount of computation and save costs, and is more suitable for the hardware conditions of a relatively small device such as a talking doorbell; compared to receiving the entire After a segment of audio signal, the volume interval is divided and the volume gain is adjusted according to the average volume value of the entire segment of the audio signal, which can determine the volume gain more quickly, thereby reducing the delay phenomenon, and is more suitable for communication products such as communication doorbells. Requirements for immediacy of transmission; compared to adjusting the volume values of all sizes to the same volume value, it can maintain the original volume difference of the audio, retain the dynamic characteristics of the sound, and is more suitable for talking doorbells In this usage scenario, the owner can identify the visitor by voice.

Preferably, after the step of obtaining the sample audio signal and the average volume value of the sample audio signal from the audio signal, it further includes:

Step A10, judging whether the average volume value belongs to the preset noise volume value range;

In this embodiment, specifically, according to the upper limit and lower limit of the preset noise volume value range, the volume value range greater than the lower limit value or smaller than the upper limit value is used as the noise volume value range, If the average volume value is within any volume value range of the two volume value ranges, it belongs to the noise volume value range, wherein, it should be noted that the noise interferes with the expression of voice information in normal calls. Sounds include ambient sounds with low volume, interference sounds from irregular signals, and sounds that are too loud and endanger human health. Therefore, a lower upper limit can be set. If the volume is lower than this upper limit The value may cause inaudible specific voice information. At the same time, set a higher lower limit value. If the volume value is higher than this lower limit value, it may cause noise, distortion, etc. The noise volume value range includes values below this upper limit. The volume value range of the value and the volume value range higher than this lower limit (such as: less than 20 decibels or greater than or equal to 80 decibels), the setting of the noise volume value range upper limit and lower limit value can be based on big data statistics, actual Tests, hardware loss, or user-defined data can be set.

Step A20, if the average volume value does not belong to the preset noise volume value range, perform the step of: determining the preset volume interval to which the average volume value belongs;

In this embodiment, specifically, if the average volume value does not belong to the preset noise volume value range, it means that the sample audio signal is not a noise signal and can be used to represent the audio signal, and then perform the next step: A preset volume interval to which the average volume value belongs is determined.

Step A30, if the average volume value belongs to the preset noise volume value range, then use the sample audio signal as a noise audio signal, and return to the step of: obtaining a sample audio signal from the audio signal and the sample audio signal the average volume value of .

In this embodiment, specifically, if the average volume value belongs to the preset noise volume value range, it means that the sample audio signal is a noise signal, and cannot be used to represent the audio signal, so it is necessary to return to the execution step: A sample audio signal and an average volume value of the sample audio signal are obtained from the audio signal.

Preferably, after the step of using the sample audio signal as a noise audio signal, it further includes:

Step A31, obtaining the noise initial volume value of the noise audio signal;

In this embodiment, it should be noted that the initial noise volume value is the volume value obtained from the noise audio samples of the noise audio signal. It is easy to understand that a section of noise audio signal includes one or more noise audio samples, each Noise audio samples may have the same or different volume values.

Step A32, generating a first volume gain of the noise initial volume value;

In this embodiment, specifically, the adjusted volume value or volume value range (such as: the lower limit of the human hearing threshold, the range that does not affect other sound information accepted by the human ear, etc.) The ratio, difference or functional relationship between the initial volume value and the adjusted volume value or the characteristic value (such as: upper limit value, lower limit value, middle value, etc.) in the volume value range as the first volume gain, wherein, after adjustment The volume value or range of volume values can be set according to big data statistics, actual tests, hardware loss, or user-defined data. It is easy to understand that if the initial volume value of the noise is different, the first volume gain generated will be different. .

Step A33, adjusting the initial noise volume value according to the first volume gain to obtain a second balanced volume value corresponding to the noise audio signal.

In this embodiment, specifically, each noise initial volume value is adjusted to a preset adjusted volume value or volume value range (such as: human hearing threshold The lower limit value of the noise audio signal, the range that does not affect the acceptance of other sound information by the human ear, etc.), to obtain the second equalized volume value corresponding to the noise audio signal.

In this embodiment, since the audio signal to be processed is a noise signal, it has no practical meaning and will interfere with the expression of voice information in a normal conversation, so the initial volume values of noises of different sizes can be adjusted to the same volume value or volume Value range, in order to eliminate or reduce its interference to the expression of voice information in normal conversations.

Wherein, in an implementable manner, starting from the 0th second, the first sample audio signal of a preset time length is acquired, and the average volume value is calculated, when the average volume value belongs to the preset noise volume value range , reducing the ratio of the acquired initial noise volume value of the first sample audio signal to the lower limit of normal human hearing to the lower limit of normal human hearing, and Starting from a moment, the second sample audio signal with a preset time length is continuously intercepted, and the average volume value is calculated, and the noise volume value range is determined until the Nth sample audio signal whose average volume value is not within the preset noise volume value range is obtained , using the Nth sample audio signal as the final sample audio signal.

In this embodiment, by determining the range of the noise volume value, it is possible to eliminate the interference that the acquired sample audio signal is a noise signal, increase the representativeness of the sample audio signal, and reduce the influence of the noise signal on volume gain adjustment.

Step S30, determining the preset volume interval to which the average volume value belongs;

In this embodiment, it should be noted that the preset volume range is based on the division of volume values based on the human hearing range, comfortable hearing range, volume level, hardware loss and volume relationship, and/or distortion phenomena. The obtained volume value range is used to formulate different targeted volume adjustment methods for different preset volume ranges, so that the volume can be balanced, for example: low volume range less than or equal to 40 decibels, medium volume greater than 40 decibels and less than 75 decibels interval, and a high volume interval greater than or equal to 75 decibels; an appropriate volume interval of greater than or equal to 40 decibels and less than or equal to 75 decibels, and an effective volume interval of less than 40 decibels or greater than 75 decibels, etc.

Specifically, different volume intervals and volume value ranges corresponding to each volume interval are preset, and the preset volume interval to which the average volume value belongs is determined according to the volume value range in which the average volume value is located.

Preferably, the step of determining the preset volume interval to which the average volume value belongs includes:

Step B10, judging whether the average volume value is within a preset appropriate volume value range;

In this embodiment, it should be noted that the appropriate volume value range is a volume value range that can accurately convey the information expressed by the sound and is within the comfortable hearing range, which can be calculated according to big data statistics, actual Test, hardware loss, or user-defined data, etc., to pre-set the appropriate volume value range, the appropriate volume value range is a continuous volume value range, wherein the minimum volume value is the lower limit of the appropriate volume value range value, and the maximum volume value is the upper limit value of the appropriate volume value range.

Specifically, comparing the average volume value with the upper limit value and the lower limit value of the preset suitable volume value range, and judging whether the average volume value is greater than or equal to the lower limit value and less than or equal to the upper limit value value.

Wherein, in a practicable manner, user-defined data inputted by the user is acquired, a personalized suitable volume value range is generated according to the customized data, and the personalized suitable volume value range is used as a preset suitable volume value range. Due to differences in the hearing of different people, the appropriate volume range for different users may be different, so you can obtain custom data set by the user according to your own situation, for example: by playing standard audio with different volume levels for the user to choose, and then obtain The volume of the standard audio selected by the user is taken as the custom data; after a section of standard audio is played according to the preset volume value, the user is allowed to adjust the volume, and then the volume finally adjusted by the user is used as the custom data; The upper limit value and the lower limit value (such as: decibel value, the percentage of the maximum volume value, etc.) of the personalized suitable volume value range input according to one's own needs, and the described personalized suitable volume value range is used as the self-defined data.

Step B20, if the average volume value is within the preset appropriate volume value range, then the average volume value belongs to the appropriate volume range;

Step B30, if the average volume value is not within the preset appropriate volume value range, then the average volume value belongs to the effective volume interval.

In this embodiment, specifically, if the average volume value is greater than or equal to the lower limit value of the appropriate volume value range and less than or equal to the upper limit value of the appropriate volume value range, the average volume value is at If the appropriate volume value range is preset, it is judged that the average volume value belongs to the appropriate volume range; if the average volume value is less than or equal to the lower limit value of the appropriate volume value range, or greater than or equal to the lower limit value of the appropriate volume value range upper limit value, if the average volume value is not within the preset appropriate volume value range, then it is determined that the average volume value belongs to an effective volume interval, wherein the effective volume interval includes an upper limit greater than or equal to the appropriate volume value range. The volume value range of the limit value and the volume value range less than or equal to the lower limit value of the appropriate volume value range are two discontinuous volume value ranges. It should be noted that the average volume value is equal to the appropriate volume value In the case of the upper limit or lower limit of the value range, it may be preset whether the average volume value belongs to or does not belong to the appropriate volume value range.

Step S40, according to the preset volume range, determine the volume gain corresponding to the average volume value;

In this embodiment, it should be noted that the gain generally refers to the degree of increase in current, voltage or power of components, circuits, equipment or systems, and the volume gain refers to the degree of increase in volume, including positive gain , negative gain and/or constant gain, etc. Positive gain means to increase and adjust the volume, negative gain means to decrease and adjust the volume, and constant gain means to keep the original volume unchanged. The volume gain can be a numerical value, function or volume adjustment method, etc.

Specifically, the volume gain corresponding to the average volume value is determined according to the preset volume interval to which the average volume value belongs and the mapping relationship between the preset volume interval and the volume gain.

Step S50, adjusting the initial volume value according to the volume gain to obtain a first balanced volume value corresponding to the audio signal.

In the embodiment of the present application, specifically, the initial volume value is adjusted according to the volume gain to obtain the first balanced volume value after gain adjustment, and finally the uniform volume gain obtained by the average volume value of the sample audio signal is realized. Adjusting all the initial volume values of the entire audio signal, compared to adjusting all initial volume values to the same volume value, can also maintain the original volume difference of the audio, retain the dynamic characteristics of the sound, and make the information transmission more acurrate.

Preferably, the step of adjusting the initial volume value according to the volume gain to obtain a first balanced volume value corresponding to the audio signal includes:

Step C10, adjusting the initial volume value according to the volume gain to obtain an intermediate volume value;

In this embodiment of the present application, specifically, the initial volume value is adjusted according to the volume gain to obtain an intermediate volume value after gain adjustment.

Step C20, detecting whether the intermediate volume value belongs to the preset noise volume value range;

In the embodiment of the present application, specifically, according to the upper limit value and the lower limit value of the preset noise volume value range, the volume value range greater than the lower limit value or smaller than the upper limit value is used as the noise volume value range, If the average volume value is within any volume value range of the two volume value ranges, it belongs to the noise volume value range, wherein, it should be noted that the noise interferes with the expression of voice information in normal calls. Sounds include ambient sounds with low volume, interference sounds from irregular signals, and sounds that are too loud and endanger human health. Therefore, a lower upper limit can be set. If the volume is lower than this upper limit The value may cause inaudible specific voice information. At the same time, set a higher lower limit value. If the volume value is higher than this lower limit value, it may cause noise, distortion, etc. The noise volume value range includes values below this upper limit. The volume value range of the value and the volume value range higher than this lower limit (such as: less than 20 decibels or greater than or equal to 80 decibels, etc.), the setting of the noise volume value range upper limit and lower limit value can be based on big data statistics, Actual test, hardware loss, or user-defined data can be set.

Step C30, if the intermediate volume value belongs to the preset noise volume value range, generating a fourth volume gain for the intermediate volume value;

In the embodiment of the present application, specifically, if the intermediate volume value belongs to the preset noise volume value range, it means that the audio signal corresponding to the intermediate volume value is a noise signal, and the adjusted volume value or volume value range is preset. (such as: the lower limit of the human hearing threshold, the range that does not affect the acceptance of other sound information by the human ear and/or the preset appropriate volume value range, etc.), according to the intermediate volume value and the adjusted volume value or volume The ratio, difference or functional relationship of the value range (such as: upper limit value, lower limit value or intermediate value, etc.) is used as the fourth volume gain, wherein, the adjusted volume value or volume value range is based on big data statistics, The actual test, hardware loss, user-defined data or appropriate volume value range are pre-set. In an implementable manner, the validity of the noise signal can be further judged. If the noise signal is invalid signal, the adjusted volume value or volume value range is pre-set according to big data statistics, actual tests, hardware loss, or user-defined data (such as: the lower limit of the human hearing threshold and/or does not affect other sounds information is accepted by the human ear, etc.), if the noise is an effective signal, the ratio, difference or functional relationship between the intermediate volume value and the preset appropriate volume value or the preset appropriate volume value range is used as the fourth Volume gain, wherein the validity judgment method includes voice recognition and preset effective volume value range, etc.

Step C40, adjusting the intermediate volume value according to the fourth volume gain to obtain a third balanced volume value;

In this embodiment, specifically, according to the fourth volume gain, the intermediate volume value is adjusted to a preset adjusted volume value or volume value range (such as: the lower limit value of the human hearing threshold, which does not affect other The range that the sound information is accepted by the human ear and/or the preset appropriate volume value range, etc.) to obtain the third balanced volume value.

Step D50, if the intermediate volume value does not belong to the preset noise volume value range, then use the intermediate volume value as the first equalized volume value.

In this embodiment, specifically, if the intermediate volume value does not belong to the preset noise volume value range, it means that the audio signal corresponding to the intermediate volume value is not a noise signal, and the intermediate volume value is taken as the first An equalization volume value.

In this embodiment, although in the usage scenario of the talking doorbell, the volume of the sound in the same conversation is usually relatively stable, the uniform volume gain obtained by the average volume value of the sample audio signal is used to adjust all the volume of the entire audio signal. The initial volume value does not require volume gain calculation and special processing for the initial volume value of each frame, and the volume gain adjustment can be performed simply and quickly. However, due to the uncontrollability of the sound source and the external environment, the adjusted volume value may not belong to the Special circumstances of the preset noise volume value range, for example, a sudden increase in sound due to shock during a call, a sudden honking of a nearby vehicle during a call, or an unrelated communication between the person on the call and other people around him during the call, etc. , so after the adjustment is completed, perform noise volume detection and noise volume adjustment again to ensure that the first equalized volume value after volume equalization is in a more appropriate volume range, improving the accuracy of voice information transmission and receiving voice information people's hearing comfort.

Further, referring to FIG. 2 , based on the first embodiment of the present application, in another embodiment of the present application, for the same or similar content as the first embodiment above, reference may be made to the introduction above, and details will not be repeated hereafter. On this basis, the preset volume interval includes an effective volume interval and an appropriate volume interval,

In this embodiment, it should be noted that the appropriate volume range is a range of volume values that can more accurately convey the information expressed by the sound and is within the comfortable hearing range, which can be calculated according to large data statistics and actual tests. , hardware loss, or user-defined data to pre-set the appropriate volume value range, and the effective volume range is a volume value range outside the volume value range of the appropriate volume range.

The step of determining the volume gain corresponding to the average volume value according to the preset volume interval includes:

Step S41, if the preset volume range is the effective volume range, then determine a second volume gain corresponding to the average volume value according to the average volume value and the characteristic volume value belonging to the appropriate volume range;

In this embodiment, it should be noted that the characteristic volume value is within the volume value range of the appropriate volume interval, and is used to represent certain characteristic numerical values of the appropriate volume interval, for example: the upper limit value , lower limit, median or third value, etc.

Specifically, the preset volume interval includes an effective volume interval and an appropriate volume interval, and if the preset volume interval is the effective volume interval, according to the average volume value and the characteristic volume value of the appropriate volume interval Difference, ratio, sum value or functional relationship, etc., to determine the second volume gain corresponding to the average volume value, for example: the difference between the average volume value and the upper limit value of the appropriate volume range, the average volume value The ratio of the median value of the appropriate volume range or the half of the sum of the average volume value and the lower limit of the appropriate volume value, etc.

Preferably, the step of determining the second volume gain corresponding to the average volume value according to the average volume value and the characteristic volume values belonging to the appropriate volume range includes:

Step S411, obtaining the median value of the appropriate volume range as the characteristic volume value;

In this embodiment, it should be noted that the median value of the appropriate volume range is a value obtained by dividing the sum of the upper limit value of the appropriate volume range plus the lower limit value of the appropriate volume range by 2.

Specifically, the median value of the appropriate volume interval is calculated according to the upper limit value and the lower limit value of the appropriate volume interval, and the median value is used as the characteristic volume value, wherein, since the appropriate volume interval is previously Therefore, the median value of the appropriate volume interval can also be predetermined according to the preset volume value range of the appropriate volume interval.

Step S412: Determine a second volume gain corresponding to the average volume value according to the ratio of the average volume value to the median value.

In this embodiment, specifically, the ratio of the average volume value to the median value is used as the multiple relationship between the volume after gain adjustment and the volume before gain adjustment, and the specific ratio obtained by converting the ratio or the ratio The volume value is used as the second volume gain corresponding to the average volume value.

In this embodiment, in the method of determining the volume gain by using the average volume value of the sample audio signal to represent the overall volume value of the entire audio signal, the median value of the appropriate volume range is used as the standard, which can ensure the equalized volume to the greatest extent. The first balanced volume value is in an appropriate volume range, which improves the accuracy of voice information transmission and the auditory comfort of the person receiving the voice information.

Step S42, if the preset volume range is an appropriate volume range, then determine a third volume gain corresponding to the average volume value.

In this embodiment, specifically, if the preset volume interval is an appropriate volume interval, it means that the average volume value itself is an appropriate volume value, and there is no need to adjust the volume gain, then the average volume value is determined. value corresponding to the third volume gain, the third volume gain is a constant gain, which is used to keep the volume value before and after the gain adjustment unchanged.

In this embodiment, through the setting of volume intervals, different gain adjustments are realized for volume values belonging to different volume intervals. It is not necessary to perform unnecessary gain adjustments for volume values that are appropriate in size. The value is adaptively adjusted according to the difference between its volume value and the appropriate volume range, thereby solving the technical problem of unbalanced volume value of the output audio caused by the volume value of the fixed gain due to the difference in the volume value of the sound source, and realizing the control of all audio signals in the entire audio segment. Automatic equalization of the initial volume value.

An embodiment of the present application provides a volume equalization device for a talking doorbell, and the volume equalizing device for a talking doorbell includes:

A volume gain determination module, configured to generate a volume gain corresponding to an average volume value according to the preset volume interval;

Optionally, the sample audio signal acquisition module is also used for:

judging whether the average volume value belongs to the preset noise volume value range;

If the average volume value does not belong to the preset noise volume value range, the step of: determining the preset volume interval to which the average volume value belongs;

If the average volume value belongs to the preset noise volume value range, then use the sample audio signal as a noise audio signal, and return to the execution step: obtain the sample audio signal and the average volume of the sample audio signal from the audio signal value.

Optionally, the sample audio signal acquisition module is also used for:

Acquiring the noise initial volume value of the noise audio signal;

generating a first volume gain of the initial volume value of the noise;

The initial noise volume value is adjusted according to the first volume gain to obtain a second balanced volume value corresponding to the noise audio signal.

Optionally, the volume gain determination module is also used for:

If the preset volume interval is an effective volume interval, determining a second volume gain corresponding to the average volume value according to the average volume value and the characteristic volume value belonging to the appropriate volume interval;

If the preset volume range is an appropriate volume range, then determine a third volume gain corresponding to the average volume value.

Optionally, the volume gain determination module is also used for:

Obtaining the median value of the appropriate volume interval as the characteristic volume value;

A second volume gain corresponding to the average volume value is determined according to a ratio of the average volume value to the median value.

Optionally, the volume range determination module is also used for:

judging whether the average volume value is within a preset appropriate volume value range;

If the average volume value is within a preset range of appropriate volume values, then the average volume value belongs to an appropriate volume range;

If the average volume value is not within the preset appropriate volume value range, the average volume value belongs to an effective volume interval.

Optionally, the volume equalization module is also used for:

adjusting the initial volume value according to the volume gain to obtain an intermediate volume value;

Detecting whether the intermediate volume value belongs to a preset noise volume value range;

If the intermediate volume value belongs to the preset noise volume value range, generating a fourth volume gain for the intermediate volume value;

adjusting the intermediate volume value according to the fourth volume gain to obtain a third balanced volume value;

If the intermediate volume value does not belong to the preset noise volume value range, the intermediate volume value is used as the first balanced volume value.

An embodiment of the present application provides a volume equalization device for a talking doorbell. The volume equalizing device for a talking doorbell includes a processor and a volume of the talking doorbell that is stored in the processor and can run on the processor. An equalization program, wherein, when the volume equalization program of the talking doorbell is executed by the processor, the method for volume equalization of the talking doorbell in the first embodiment is realized.

Referring to FIG. 2 , the volume equalization device of the talking doorbell of the present application may include: a processor 1001 such as a CPU, a speaker 1004 , a user interface 1003 , a memory 1005 , a microphone 1006 , and a communication bus 1002 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001 . The speaker 1004 is used to play sound signals. The microphone 1006 is used to receive signals from the speaker and voice signals triggered by the user.

Optionally, the terminal may also include a camera, an RF (Radio Frequency, radio frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, sensors such as light sensors, motion sensors and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor may turn off the display screen and/or backlight. As a kind of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the posture of mobile terminals (such as horizontal and vertical screen switching, Related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tap), etc.; of course, the mobile terminal can also be equipped with other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. No longer.

The volume equalization device of the talking doorbell provided by the present application adopts the volume equalization method of the talking doorbell in the first embodiment above, and solves the technical problem of unbalanced audio volume after gain adjustment in the prior art. Compared with the prior art, the beneficial effect of the volume equalization device of the talking doorbell provided by the embodiment of the present application is the same as that of the volume equalizing method of the talking doorbell provided in the first embodiment above, and the volume equalization of the talking doorbell Other technical features in the device are the same as those disclosed by the method in the previous embodiment, and will not be repeated here.

Those skilled in the art can understand that the terminal structure shown in FIG. 1 does not constitute a limitation on the terminal, and may include more or less components than those shown in the figure, or combine some components, or arrange different components.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

This embodiment provides a computer-readable storage medium, which has computer-readable program instructions stored thereon, and the computer-readable program instructions are used to implement the volume equalization method for a talking doorbell in the first embodiment above.

The computer-readable storage medium provided in the embodiment of the present application may be, for example, a USB flash drive, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, system or device. Program code embodied on a computer readable storage medium may be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

The above-mentioned computer-readable storage medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

The above-mentioned computer-readable storage medium carries one or more programs, and when the above-mentioned one or more programs are executed by the electronic device, the electronic device: acquires the audio signal and the initial volume value of the audio signal; from the audio signal Acquiring a sample audio signal and an average volume value of the sample audio signal; determining a preset volume interval to which the average volume value belongs; determining a volume gain corresponding to the average volume value according to the preset volume interval; according to the The volume gain adjusts the initial volume value to obtain a first balanced volume value corresponding to the audio signal.

Computer program code for carrying out the operations of the present disclosure can be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as through an Internet service provider). Internet connection).

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that contains one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified functions or operations , or may be implemented by a combination of dedicated hardware and computer instructions.

The modules involved in the embodiments described in the present disclosure may be implemented by software or by hardware. Wherein, the name of the module does not constitute a limitation of the unit itself under certain circumstances.

The computer-readable storage medium provided by the present application stores computer-readable program instructions for implementing the volume equalization method of the above-mentioned talking doorbell, which solves the technical problem of unbalanced audio volume after gain adjustment in the prior art. Compared with the prior art, the beneficial effect of the computer-readable storage medium provided by the embodiment of the present application is the same as the beneficial effect of the volume equalization method for the talking doorbell provided by the first embodiment above, and will not be repeated here.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structures or equivalent process transformations made by using the description of the application and the accompanying drawings are directly or indirectly used in other related technical fields. , are all included in the patent processing scope of the present application in the same way.

Claims

A volume equalization method of a talking doorbell, characterized in that the volume equalization method of the talking doorbell comprises:

Obtain an audio signal and an initial volume value of the audio signal;

obtaining a sample audio signal and an average volume value of the sample audio signal from the audio signal;

determining a preset volume interval to which the average volume value belongs;

determining a volume gain corresponding to the average volume value according to the preset volume interval;

The initial volume value is adjusted according to the volume gain to obtain a first balanced volume value corresponding to the audio signal.
The volume equalization method of the talking doorbell according to claim 1, wherein after the step of obtaining the sample audio signal and the average volume value of the sample audio signal from the audio signal, further comprising:

judging whether the average volume value belongs to the preset noise volume value range;

If the average volume value does not belong to the preset noise volume value range, the step of: determining the preset volume interval to which the average volume value belongs;

If the average volume value belongs to the preset noise volume value range, then use the sample audio signal as a noise audio signal, and return to the execution step: obtain the sample audio signal and the average volume of the sample audio signal from the audio signal value.
The volume equalization method of a talking doorbell according to claim 2, wherein, after the step of using the sample audio signal as a noise audio signal, further comprising:

Acquiring the noise initial volume value of the noise audio signal;

generating a first volume gain of the initial volume value of the noise;

The initial noise volume value is adjusted according to the first volume gain to obtain a second balanced volume value corresponding to the noise audio signal.
The volume equalization method of a talking doorbell according to claim 1, wherein the preset volume interval includes an effective volume interval and an appropriate volume interval, and the step of determining the preset volume interval to which the average volume value belongs include:

judging whether the average volume value is within a preset appropriate volume value range;

If the average volume value is within the preset appropriate volume value range, then the average volume value belongs to the appropriate volume range;

If the average volume value is not within the preset appropriate volume value range, the average volume value belongs to the effective volume range.
The volume equalization method of a talking doorbell according to claim 4, wherein the step of determining the volume gain corresponding to the average volume value according to the preset volume interval comprises:

If the preset volume interval is the effective volume interval, determining a second volume gain corresponding to the average volume value according to the average volume value and the characteristic volume value belonging to the appropriate volume interval;

If the preset volume interval is the appropriate volume interval, then determine a third volume gain corresponding to the average volume value.
The volume equalization method for a talking doorbell according to claim 5, wherein the second volume corresponding to the average volume value is determined according to the average volume value and the characteristic volume value belonging to the appropriate volume interval Gain steps include:

Obtaining the median value of the appropriate volume interval as the characteristic volume value;

A second volume gain corresponding to the average volume value is determined according to a ratio of the average volume value to the median value.
The volume equalization method of a talking doorbell according to claim 1, wherein the step of adjusting the initial volume value according to the volume gain to obtain the first equalized volume value corresponding to the audio signal comprises:

adjusting the initial volume value according to the volume gain to obtain an intermediate volume value;

Detecting whether the intermediate volume value belongs to a preset noise volume value range;

If the intermediate volume value belongs to the preset noise volume value range, generating a fourth volume gain for the intermediate volume value;

adjusting the intermediate volume value according to the fourth volume gain to obtain a third balanced volume value;

If the intermediate volume value does not belong to the preset noise volume value range, the intermediate volume value is used as the first balanced volume value.
A volume equalizing device for a talking doorbell, characterized in that the volume equalizing device for a talking doorbell comprises:

An audio signal acquisition module, configured to acquire an audio signal and an initial volume value of the audio signal;

A sample audio signal acquisition module, configured to acquire a sample audio signal and an average volume value of the sample audio signal from the audio signal;

A volume interval determination module, configured to determine the preset volume interval to which the average volume value belongs;

A volume gain determination module, configured to determine the volume gain corresponding to the average volume value according to the preset volume interval;

A volume equalization module, configured to adjust the initial volume value according to the volume gain to obtain a first equalized volume value corresponding to the audio signal.
A volume equalizing device for a talking doorbell, characterized in that the volume equalizing device for a talking doorbell includes a processor and a volume equalizing device for a talking doorbell that is stored in the processor and can run on the processor. program, wherein, when the volume equalization program of the talking doorbell is executed by the processor, the steps of the volume equalization method for the talking doorbell as described in any one of claims 1 to 7 are realized.
A readable storage medium, characterized in that, the readable storage medium stores a program for realizing the volume equalization method of the talking doorbell, and the program for realizing the volume equalization method of the talking doorbell is executed by a processor to realize the following: The steps of the volume equalization method of the talking doorbell described in any one of claims 1 to 7.