WO2019033943A1 - Volume adjusting method and device, mobile terminal and storage medium - Google Patents

Abstract

A volume adjusting method and device, a mobile terminal and a storage medium. The method comprises: when it is detected that a terminal device plays back a sound source, acquiring audio information of the sound source; determining an audio amplitude corresponding to the audio information according to the audio information; and determining an amplitude adjustment coefficient and noise reduction information corresponding to the audio amplitude, and adjusting the audio amplitude according to the adjustment coefficient and the noise reduction information.

Description

Volume adjustment method, device, mobile terminal and storage medium

The present application claims the priority of the Chinese patent application entitled "Volume Adjustment Method, Apparatus, Terminal Equipment, and Storage Medium" on August 18, 2017, the application number is 201710711588.5, the entire contents of which are incorporated by reference. In the present disclosure.

Technical field

Embodiments of the present disclosure relate to the field of computer technologies, for example, to a volume adjustment method, apparatus, mobile terminal, and storage medium.

Background technique

With the increasing popularity of mobile terminals, more and more users use mobile terminals to perform various functions to meet their own needs, such as reading texts, watching videos, listening to music, and playing games using mobile terminals. However, when the mobile terminal is playing audio and video, the adjustment of the volume level is flawed and needs to be improved.

Summary of the invention

The disclosure provides a volume adjustment method, device, terminal device and storage medium, which improves the volume adjustment efficiency and reduces the power consumption of the terminal device.

Embodiments of the present disclosure provide a volume adjustment method, including:

Obtaining audio information of the sound source when detecting that the terminal device performs sound source playing;

Determining an audio amplitude corresponding to the audio information according to the audio information;

And determining an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information, and adjusting the audio amplitude according to the amplitude adjustment coefficient and the noise reduction information.

The embodiment of the present disclosure further provides a volume adjustment apparatus, including:

Obtaining a module, configured to acquire audio information of the sound source when detecting that the terminal device performs sound source playing;

An amplitude determining module, configured to determine an audio amplitude corresponding to the audio information according to the audio information;

An adjustment information determining module configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information;

The adjustment module is configured to adjust the audio amplitude according to the amplitude adjustment coefficient and the noise reduction information.

An embodiment of the present disclosure further provides a terminal device, including: a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor executing the computer program to implement an embodiment of the present disclosure The volume adjustment method described.

Embodiments of the present disclosure also provide a storage medium including terminal device executable instructions for performing a volume adjustment method according to an embodiment of the present disclosure when executed by a terminal device processor.

The technical solution provided by the embodiment of the present disclosure improves the volume adjustment efficiency and reduces the power consumption of the terminal device.

DRAWINGS

FIG. 1 is a flowchart of a volume adjustment method according to an embodiment of the present disclosure;

2 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

3 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

4 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

FIG. 5 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

FIG. 6 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

FIG. 7 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

FIG. 8 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure;

FIG. 9 is a structural block diagram of a volume adjustment apparatus according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.

Detailed ways

The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are intended to be construed In addition, for the convenience of description, only some but not all of the structures related to the present disclosure are shown in the drawings.

FIG. 1 is a flowchart of a volume adjustment method according to an embodiment of the present disclosure. This embodiment can be applied to the case where the volume is adjusted when the terminal device plays the sound source. The method can be implemented by the terminal device provided by the embodiment, and the volume adjustment device of the terminal device can be implemented by using software and/or hardware. As shown in FIG. 1, the volume adjustment method provided in this embodiment includes the following steps.

Step 101: Acquire audio information of the sound source when detecting that the terminal device performs sound source playback.

The terminal device can play the sound source through the installed third-party application or the audio and video playback software that comes with the system. In an embodiment, the playing of the sound source mainly includes the steps of acquiring, decoding, and outputting the sound source file. In an embodiment, the obtained sound source file may be a multicast stream received through a network, or may be an audio and video file stored locally by the terminal device. In an embodiment, after acquiring the sound source file, the sound source file is loaded into a memory buffer, and the sound source file loaded into the memory buffer is decoded. Before the decoding starts, if the sound source file contains video data at the same time, separation of the audio data and the video data is required, and the separated audio data is input to the audio decoder. In an embodiment, the audio decoder is mainly used for reading audio data in the memory buffer, obtaining a digital audio signal, and converting the digital audio signal into an analog audio signal, and the playing device of the terminal device performs the audio signal according to the analog audio signal. Audio Player. In an embodiment, when the sound source playing event is triggered, it is determined that the terminal device starts to play the sound source. In an embodiment, the trigger event may be that the play button displayed in the touch screen is detected to be pressed, or may be detected. When the playback device such as the speaker of the terminal device starts playing the sound, it is determined that the terminal device performs the sound source playback.

When the terminal device detects the sound source playing, the audio information of the sound source is acquired. In one embodiment, the digital audio signal decoded by the audio decoder may be sampled to determine audio information corresponding to the audio source. In another embodiment, the original file of the currently played sound source may also be acquired, and the audio information corresponding to the sound source is determined by parsing the original file. In another embodiment, taking the Android system as an example, the audio information of the sound source can be obtained through the android.media.MediaRecorder class or the android.media.AudioRecord class.

Step 102: Determine an audio amplitude corresponding to the audio information according to the audio information.

Amplitude refers to the maximum distance from the original position during the vibration of the object. The loudness of the sound heard by the human ear is related to the amplitude of the sound source. The louder the amplitude, the stronger the loudness. In one embodiment, the digital audio signal decoded by the audio decoder may be sampled to obtain amplitude information within a preset time period T. In an embodiment, the amplitude information may be composed of a plurality of amplitude values, and the amplitude curves of the sound sources played during the preset time period T may be correspondingly determined according to the obtained plurality of amplitude values. In another embodiment, taking the Android system as an example, the audio information of the audio source can be obtained by using the android.media.MediaRecorder class or the android.media.AudioRecord class to obtain the amplitude of the audio amplitude corresponding to the audio information. In another embodiment, when the audio information acquired in step 101 is the original file corresponding to the sound source, the amplitude of the audio amplitude corresponding to the audio information may be obtained by parsing the original file.

In one embodiment, when detecting the sound source playing, the amplitude is determined once every predetermined time (eg, 1 second (s), 3 s, or 10 s), or the amplitude of each frame of the audio information of the audio information is determined in real time. In an embodiment, the acquiring the audio information of the sound source includes: acquiring audio frame information of the sound source; determining an audio amplitude corresponding to the audio information according to the audio information, including: according to the audio frame information Determining an audio amplitude of each frame of the audio information. In an embodiment, when the sound source is detected, the sound source file is parsed to obtain an audio frame sequence, and the amplitude corresponding to each frame is determined according to each frame of the audio frame sequence.

Step 103: Determine an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information, and adjust an audio amplitude of the sound source according to the amplitude adjustment coefficient and the noise reduction information.

In one embodiment, the noise reduction information may be inverted output information of the noise information determined from the audio amplitude. In an embodiment, when the noise amplitude corresponding to the audio amplitude determined according to the audio amplitude is larger, the amplitude of the reverse output in the noise reduction information is correspondingly increased, and the noise amplitude corresponding to the audio amplitude determined according to the audio amplitude is relatively larger. In hours, the amplitude of the reverse output in the noise reduction information is also reduced accordingly. Therefore, the noise reduction information interval is reasonably determined by analyzing the audio amplitude, thereby completing the automatic noise reduction, and no need to artificially set the noise reduction level, and at the same time, since the noise reduction information is determined for the audio amplitude of the real-time input, the noise reduction effect is better.

In an embodiment, after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients; And adjusting the audio amplitude by the noise reduction information comprises: adjusting the audio amplitude according to the sub-amplitude adjustment coefficient and the noise reduction information.

In one embodiment, to increase the volume of the low-amplitude region of the sound source, a large amplitude adjustment coefficient is assigned to the low-amplitude audio amplitude, and a high-amplitude audio amplitude is correspondingly assigned a smaller amplitude adjustment coefficient. In one embodiment, the amplitude adjustment factor is assigned to an audio amplitude of less than -3 decibels (db) and greater than -10 db, and an amplitude adjustment factor of two is allocated to an audio amplitude of less than -10 db and greater than -50 db. At this time, during the sound source playing, if the amplitude adjustment coefficient of the previous audio amplitude is 1.2, and the amplitude of the adjustment to the adjacent next audio amplitude requires an amplitude adjustment coefficient of 2, the adjusted audio amplitude will be clearly heard. The problem is abrupt, which is caused by the jump of the amplitude adjustment factor.

In an embodiment, the dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients comprises: when detecting that an amplitude adjustment coefficient corresponding to different audio amplitudes satisfies a preset condition, dividing the amplitude adjustment coefficient into A preset number of sub-amplitude adjustment factors. In an embodiment, the sub-amplitude adjustment coefficients are obtained by linear or non-linear division of the amplitude adjustment coefficients. In an embodiment, the preset condition may be that the amplitude adjustment coefficients of the adjacent audio amplitudes are different, for example, the amplitude adjustment coefficient is changed from the amplitude adjustment coefficient 1 of the previous audio amplitude to the amplitude of the latter audio amplitude. The adjustment coefficient 2, or the amplitude adjustment coefficient is changed from 2 to 1.2, etc., at this time, a preset number of sub-amplitude adjustment coefficients can be added between the two amplitude adjustment coefficients corresponding to the adjacent two audio amplitudes. In an embodiment, when the amplitude adjustment coefficients of the determined adjacent audio amplitudes are 1.2 and 2, an additional 9 levels, that is, 1.28, 1.36, 1.42, ..., 1.92, may be added between 1.2 and 2. During the adjustment process, in the transition phase of the amplitude adjustment coefficient from 1.2 to 2, each n (for example, n is greater than 1 and less than or equal to 20) frame audio frames may be corresponding to one sub-amplitude adjustment coefficient, and the amplitude of each audio frame is sequentially performed. Adjustment. In an embodiment, when the amplitude adjustment coefficient is changed from 1.2 to 2, the sub-amplitude adjustment coefficient corresponding to the 1-20th audio frame at the beginning of the change is 1.28, and the sub-amplitude adjustment coefficient corresponding to the 21-40th frame audio frame is 1.36. ,And so on. In this embodiment, it is assumed that the first 100 frames of audio frames whose amplitude adjustment coefficient is 1.2 have been adjusted, and the amplitude adjustment coefficient 2 needs to be adjusted from the 101st frame. Then, if every 20 frames corresponds to the first-level sub-amplitude adjustment coefficient, 180 frames from the beginning of 101 frames, that is, to the 280th frame, the audio frame is completed with the sub-amplitude adjustment coefficient to adjust the transition period of the audio frame, and the amplitude adjustment coefficient 2 can be adjusted from the 281-frame audio frame to avoid obvious hearing acuity. problem.

In an embodiment, the process of adjusting the audio amplitude may be: parsing the audio file, modifying the data representing the amplitude information in the obtained audio data, and then performing the encapsulation after the modification, when buffering to the corresponding audio source. The audio amplitude corresponding to the file and the sound source file is correspondingly increased; or, in the decoding process of the sound source playing, the audio amplitude is obtained by analyzing the obtained digital audio signal, and the amplitude data is multiplied by the corresponding amplitude. Adjust the coefficient to change the amplitude and adjust the volume of the source.

Therefore, the volume of the sound source is adjusted without changing the original volume of the terminal device system, and the adjustment process may reduce the playback load before the sound source file does not enter the buffer, or may be in the buffer. The sound source content is adjusted to improve the adjustment efficiency, thereby improving the volume adjustment efficiency, reducing the power consumption of the terminal device, and adjusting the audio amplitude by using the noise reduction information to achieve automatic noise reduction, without artificially setting the noise reduction level, and simultaneously Since the noise reduction information is determined for the audio amplitude of the real-time input, the noise reduction effect is better.

FIG. 2 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. Referring to Fig. 2, the volume adjustment method provided in this embodiment includes the following steps.

Step 110: Acquire audio information of the sound source when detecting that the terminal device performs sound source playback.

Step 120: Determine, according to the audio information, a plurality of audio amplitudes corresponding to the audio information of the plurality of preset time segments in the audio information.

In an embodiment, the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time segments in the audio information, including:

Performing at least two samplings on the audio information for each of the preset time periods to obtain at least two audio amplitudes corresponding to each of the preset time periods; The average amplitude between the at least two audio amplitudes is determined as the audio amplitude corresponding to the audio information for each of the preset time periods.

For example, every 10s is a preset time period, and the digital audio signal decoded by the audio decoder can be sampled 5 times in the first 10s to obtain 5 audio amplitudes, and the average between 5 audio amplitudes is calculated. The amplitude, the average amplitude is taken as the first 10s corresponding audio amplitude, and the digital audio signal decoded by the audio decoder is sampled 5 times in the second 10s to obtain 5 audio amplitudes, and 5 audio amplitudes are calculated. The average amplitude between the two is used as the audio amplitude corresponding to the second 10s, thereby obtaining a plurality of audio amplitudes corresponding to the audio information of the plurality of preset time periods.

In an embodiment, the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time segments in the audio information, including:

The audio amplitude is determined once according to the audio information every predetermined period of time.

For example, every 10 s is a preset time period, and the digital audio signal decoded by the audio decoder can be sampled once every 10 s to obtain an audio amplitude, and the sampled audio amplitude is used as the audio corresponding to the audio information of the previous 10 s. amplitude.

In an embodiment, the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time segments in the audio information, including:

Determining, according to the audio information, an audio amplitude corresponding to each frame of the audio information, wherein each frame of the audio frame corresponds to one of the preset time periods.

In an embodiment, each frame of the audio information corresponds to a preset time period, for example, each 26s is a preset time period, and the audio amplitude corresponding to each frame of the audio information may be determined according to the audio information. Thereby, a plurality of audio amplitudes corresponding to the audio information of the plurality of preset time periods are respectively obtained.

Step 130: Determine an amplitude adjustment coefficient and noise reduction information corresponding to each audio amplitude.

In an embodiment, the determining a plurality of amplitude adjustment coefficients corresponding to the plurality of audio amplitudes one by one includes: determining, according to an amplitude magnitude of the plurality of audio amplitudes, one-to-one correspondence with the plurality of audio amplitudes Multiple amplitude adjustment factors.

For example, the plurality of audio amplitudes include an audio amplitude A, an audio amplitude B, and an audio amplitude C, and an amplitude adjustment coefficient 1 is allocated for an audio amplitude having an amplitude greater than -3 db or less than -50 db, which is an amplitude smaller than -10 db and greater than -50 db. The audio amplitude distribution amplitude adjustment coefficient 2 is an amplitude adjustment coefficient of 1.5 for an amplitude of an amplitude smaller than -3 db and greater than -10 db. If the audio amplitude A is greater than -3 db, the amplitude adjustment coefficient corresponding to the audio amplitude A is 1, if the audio When the amplitude B is smaller than -10 db and larger than -50 db, the amplitude adjustment coefficient corresponding to the audio amplitude B is 2.

Step 140: When the first amplitude adjustment coefficient corresponding to the first audio amplitude and the second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude are different, the first amplitude adjustment coefficient and the second amplitude adjustment coefficient A preset number of sub-amplitude adjustment coefficients are added between them.

In an embodiment, the preset number of sub-amplitude adjustment coefficients are sequentially incremented or sequentially decremented between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient.

In an embodiment, the preset number of sub-amplitude adjustment coefficients are obtained by equally spaced between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient.

In an embodiment, after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: adjusting the amplitude adjustment coefficient according to at least one of the following information: an impedance value of the playback device of the terminal device The noise value of the environment in which the terminal device is located.

When the first amplitude adjustment coefficient corresponding to the first audio amplitude and the second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude are different, the first amplitude adjustment coefficient and the second amplitude adjustment coefficient are Adding a preset number of sub-amplitude adjustment coefficients, including: an adjusted first amplitude adjustment coefficient corresponding to the first audio amplitude and an adjusted second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude When not the same, a preset number of sub-amplitude adjustment coefficients are added between the adjusted first amplitude adjustment coefficient and the adjusted second amplitude adjustment coefficient.

Step 150: Adjust a preset number of audio frames starting from a start frame in the audio information according to the preset number of sub-amplitude adjustment coefficients and noise reduction information corresponding to the second audio amplitude.

In an embodiment, the start frame is a first audio frame when the amplitude adjustment coefficient is changed from the first amplitude adjustment coefficient to the second amplitude adjustment coefficient.

In an embodiment, the preset number of audio frames includes: a first group of audio frames to an Mth group of audio frames; and the preset number of sub-amplitude adjustment coefficients includes: a first sub-increment or decrement An amplitude adjustment coefficient to a Nth sub-amplitude adjustment coefficient, wherein M and N are both positive integers greater than or equal to 1, and M is greater than or equal to N; the predetermined number of sub-amplitude adjustment coefficients and the first The noise reduction information corresponding to the two audio amplitudes adjusts a preset number of audio frames from the start frame in the audio information, including: using the first sub-amplitude adjustment coefficient and the second audio amplitude corresponding to The noise reduction information adjusts the first set of audio frames, and adjusts the second set of audio frames using the second sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude until the Nth sub-amplitude is used The adjustment coefficient and the noise reduction information corresponding to the second audio amplitude adjust the Nth group of audio frames.

For example, in step 120, the audio amplitude A corresponding to the audio information of the preset time period a, the audio amplitude B corresponding to the audio information of the preset time period b, and the audio amplitude C corresponding to the audio information of the preset time period c are obtained. In step 130, it is determined that the amplitude adjustment coefficient corresponding to the audio amplitude A is i and the noise reduction information is R, the amplitude adjustment coefficient corresponding to the audio amplitude B is j and the noise reduction information is S, and the amplitude adjustment coefficient corresponding to the audio amplitude B is k and the noise reduction information is T, first adjusting the audio amplitude of the audio frame from the first frame audio frame in the audio information using the amplitude adjustment coefficient i and the noise reduction information R until the preset time period b is reached At the beginning time, for example, the amplitude adjustment coefficient i and the noise reduction information R are used to adjust the 1-100th frame audio frame. If the amplitude adjustment coefficient j corresponding to the audio amplitude B is the same as the amplitude adjustment coefficient i corresponding to the audio amplitude A, Then continue to use the amplitude adjustment coefficient i (ie, the amplitude adjustment coefficient j), and use the noise reduction information S to adjust the audio amplitude of the audio frame from the 101st frame audio frame until the preset time period c is reached. For example, the amplitude adjustment coefficient i and the noise reduction information S are used to adjust the 101st to 300th frame audio frames. If the amplitude adjustment coefficient k corresponding to the audio amplitude C and the amplitude adjustment coefficient j corresponding to the audio amplitude B are different, For example, if k is less than j, 10 sub-amplitude adjustment coefficients are added between the amplitude adjustment coefficient j and the amplitude adjustment coefficient k, and the 10 sub-amplitude adjustment coefficients are respectively successively decreasing k1, k2, ..., k10, and then from the 301st frame At the beginning of the audio frame, each 10 frames of audio frames corresponds to a sub-amplitude adjustment coefficient, and the sub-amplitude adjustment coefficient k1 and the noise reduction information T are used to adjust the 301-310 frame audio frame, and the amplitude adjustment coefficient k2 and the noise reduction information T are used. The 311-320-frame audio frame is adjusted until the 391-400-frame audio frame is adjusted using the amplitude adjustment coefficient k10 and the noise reduction information T, and then the amplitude adjustment coefficient k and the noise reduction information are used from the 401-frame audio frame. T is adjusted.

Thereby, the volume of the sound source is adjusted without changing the original volume of the terminal device system, thereby improving the efficiency of the volume adjustment, reducing the power consumption of the terminal device, and using the sub-amplitude adjustment coefficient to the preset number. The audio frame is adjusted to avoid the sudden hearing problem caused by the jump of the amplitude adjustment coefficient and improve the user experience.

FIG. 3 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises: determining an amplitude adjustment coefficient corresponding to the audio amplitude according to an amplitude magnitude of the audio amplitude. As shown in FIG. 3, the volume adjustment method provided in this embodiment includes the following steps.

Step 310: Acquire audio information of the sound source when detecting that the terminal device performs sound source playing.

Step 320: Determine an audio amplitude corresponding to the audio information according to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 330: Determine an amplitude adjustment coefficient corresponding to the audio amplitude according to the amplitude of the audio amplitude.

In an embodiment, the average amplitude of the audio amplitude of the preset length may be determined by acquiring an audio amplitude of a preset length, and then determining an amplitude adjustment coefficient corresponding to the audio amplitude of the preset length according to the average amplitude. In an embodiment, the amplitude adjustment coefficient corresponding to the average amplitude may be determined by a pre-stored mapping table, as shown in Table 1:

Table 1

Average amplitude	Amplitude adjustment factor
Greater than -3db or less than -50db	1
Less than -10db and greater than -50db	2
Less than -3db and greater than -10db	1.5

As shown in Table 1, when the average amplitude is greater than -3 db or less than -50 db, the amplitude is not adjusted; when the amplitude is less than -3 db and greater than -10 db, the amplitude belongs to the high amplitude region, and the amplitude distribution coefficient is 1.5 for the amplitude. When the amplitude is less than -10 db and greater than -50 db, the amplitude belongs to the medium amplitude region, and the amplitude distribution coefficient is 2 for the amplitude to significantly increase the amplitude of the medium amplitude region. Step 340: The amplitude adjustment coefficient is divided into a preset number of sub-amplitude adjustment coefficients, and the audio amplitude is adjusted according to the sub-amplitude adjustment coefficient and the noise reduction information.

It can be seen from the above that by assigning different amplitude adjustment coefficients to the amplitudes of the audio of different amplitudes, the noise is reduced and the amplitude of the noise is reduced, and on the basis of this, the difference of the adjacent audio amplitudes is further After the amplitude adjustment coefficient is subdivided, the preset number of audio frames in the audio amplitude is adjusted step by step, which can make the sound size reasonable and the sense of hearing smooth during the sound source playing.

FIG. 4 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises: determining an amplitude adjustment coefficient corresponding to the audio amplitude according to an amplitude magnitude of the audio amplitude and volume information of the terminal device. In an embodiment, the volume information includes volume value information, volume increase information, or volume reduction information. As shown in FIG. 4, the volume adjustment method provided in this embodiment includes the following steps.

Step 301: Acquire audio information of the sound source when detecting that the terminal device performs sound source playing.

Step 302: Determine an audio amplitude corresponding to the audio information according to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 303: Determine an amplitude adjustment coefficient corresponding to the audio amplitude according to the amplitude magnitude of the audio amplitude and the volume information of the terminal device.

In an embodiment, the acquired volume information may be one or more of current volume value information, volume increase information, and volume decrease information of the terminal device. Determining, according to the volume information, an amplitude adjustment coefficient corresponding to the audio amplitude may be determined according to one or more of current volume value information, volume increase information, and volume decrease information in the volume information.

In an embodiment, the terminal device is divided into 18 adjustable levels from mute to maximum volume, and each level corresponds to a volume value. When the terminal device plays the sound source, the volume can be obtained by the volume management component of the system (getvolume). The method obtains the current volume value of the terminal device; when the user increases or decreases the volume through the adjustment button or the touch screen of the terminal device, it is determined whether the volume of the current terminal device is increased or decreased. In one embodiment, the amplitude adjustment factor corresponding to the audio amplitude is determined based on the current volume value, as shown in Table 2:

Table 2

Volume value	Amplitude adjustment factor
5	0.5
10	1.5
15	2

In another embodiment, the amplitude adjustment coefficient corresponding to the audio amplitude is determined according to the current volume increase information or volume reduction information, as shown in Table 3:

table 3

In another embodiment, the amplitude adjustment coefficient may be jointly determined according to the volume increase information or the volume reduction information in conjunction with the volume value of the terminal to achieve adjustment of the audio amplitude.

In an embodiment, a plurality of amplitude adjustment coefficients may be determined according to volume information of the terminal device, for example, determining a first amplitude adjustment coefficient, a second amplitude adjustment coefficient, and a third amplitude adjustment coefficient according to volume information of the terminal device, where An amplitude adjustment coefficient is smaller than the second amplitude adjustment coefficient, and the second amplitude adjustment coefficient is smaller than the third amplitude adjustment coefficient, and then according to the amplitude of the audio amplitude, which of the three amplitude adjustment coefficients is corresponding to each audio amplitude, for example, And an audio amplitude that is greater than the first preset threshold or less than the third preset threshold, the first amplitude adjustment coefficient is allocated, and the second amplitude adjustment coefficient is allocated to the audio amplitude that is less than or equal to the first preset threshold and greater than the second preset threshold. And a third amplitude adjustment coefficient is allocated to the audio amplitude that is less than or equal to the second preset threshold and greater than the third preset threshold, where the first preset threshold is greater than the second preset threshold, and the second preset threshold is greater than the third preset threshold And if the amplitude of the amplitude of the audio amplitude is less than the third preset threshold, determining the audio amplitude corresponding to A first amplitude adjustment factor is an amplitude adjustment coefficient.

In an embodiment, determining an amplitude adjustment coefficient corresponding to the audio amplitude may be: assigning a first amplitude adjustment coefficient to an audio amplitude greater than a first preset threshold or less than a third preset threshold, being less than or equal to the first a second amplitude adjustment coefficient is allocated to the audio amplitude of the preset threshold and greater than the second preset threshold, and the third amplitude adjustment coefficient is allocated to the audio amplitude that is less than or equal to the second preset threshold and greater than the third preset threshold, where The first amplitude adjustment coefficient is smaller than the second amplitude adjustment coefficient, and the second amplitude adjustment coefficient is smaller than the third amplitude adjustment coefficient. In an embodiment, the first preset threshold may be -3db, the second preset threshold may be -10db, and the third preset threshold may be -50db, correspondingly, the first amplitude adjustment coefficient is 1 (ie, no The adjustment is made), the second amplitude adjustment coefficient is 1.4, and the third amplitude adjustment coefficient is 1.8. In an embodiment, amplitude adjustment is not performed for an audio amplitude having an excessively large amplitude (for example, greater than -3 db) or an amplitude being too small (for example, less than -50 db), thereby avoiding breakage caused by excessive amplitude adjustment. The problem of noise enhancement caused by the increase of too small noise is avoided, and the volume adjustment method is further optimized.

Step 304: Divide the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients, and adjust the audio amplitude according to the sub-amplitude adjustment coefficient and the noise reduction information. FIG. 5 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises: determining an amplitude adjustment coefficient corresponding to the audio amplitude according to a maximum amplitude and an average amplitude of the audio information. As shown in FIG. 5, the volume adjustment method provided in this embodiment includes the following steps.

Step 401: Acquire audio information of the sound source when detecting that the terminal device performs sound source playback.

Step 402: Determine an audio amplitude corresponding to the audio information according to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 403: Determine an amplitude adjustment coefficient corresponding to the audio amplitude according to the maximum amplitude and the average amplitude of the audio information.

In an embodiment, the digital audio signal decoded by the audio decoder is sampled to obtain the amplitude information in the preset time period T, wherein the amplitude information is composed of multiple amplitude values, and multiple amplitude values can be determined. The maximum amplitude in and the average amplitude of multiple amplitudes. In another embodiment, when detecting the sound source playing, the preset length of the audio information may be acquired, and the maximum amplitude and the average amplitude of the acquired preset length audio information are taken as the maximum amplitude and the average amplitude of the audio information, or in real time. Determining the audio amplitude of each frame of audio information of the audio information, determining the maximum amplitude of the audio amplitude of the multi-frame audio frame and the average amplitude of the audio amplitude of the multi-frame audio frame, thereby determining the maximum amplitude and average amplitude of the audio information. And determining the amplitude adjustment coefficient based on the maximum amplitude and the average amplitude of the audio information.

In an embodiment, the determining, according to the maximum amplitude and the average amplitude of the audio information, an amplitude adjustment coefficient corresponding to the audio amplitude, if the difference between the maximum amplitude and the average amplitude satisfies a preset condition, An amplitude adjustment coefficient corresponding to the audio amplitude is determined based on the maximum amplitude and the average amplitude. For example, when the difference between the maximum amplitude and the average amplitude is greater than a preset threshold (eg, 2 db), an amplitude adjustment coefficient corresponding to the audio amplitude is determined according to the maximum amplitude and the average amplitude, if the difference is not greater than a pre- If the threshold is set, the volume adjustment will not be performed. In an embodiment, when the difference between the maximum amplitude and the average amplitude is large (for example, 0.2 db), in order to avoid a loud volume when playing a sound source with a large amplitude, a smaller amplitude adjustment coefficient (such as 0.7) is determined. Thus, the higher amplitude is adjusted to lower the volume.

Step 404: Adjust an audio amplitude of the sound source according to the amplitude adjustment coefficient and the noise reduction information.

Thereby, the audio amplitude of the sound source can be adjusted according to the finally determined amplitude adjustment coefficient and noise reduction information.

The solution provided by the embodiment determines that the amplitude adjustment coefficient corresponding to the audio amplitude is determined according to the maximum amplitude and the average amplitude of the audio information, so that the volume of the sound source with a large amplitude is prevented from being played, and the sound source is improved.

FIG. 6 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises: determining an amplitude adjustment coefficient corresponding to the audio amplitude according to a maximum amplitude, an average amplitude of the audio information, and volume information of the terminal device, The volume information includes volume value information, volume increase information, or volume decrease information. Referring to FIG. 6, the volume adjustment method provided in this embodiment includes the following steps.

Step 501: Acquire audio information of the audio source when detecting that the terminal device performs sound source playback.

Step 502: Determine, according to the audio information, an audio amplitude corresponding to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 503: Determine an amplitude adjustment coefficient corresponding to the audio amplitude according to the maximum amplitude, the average amplitude of the audio information, and the volume information of the terminal device.

In an embodiment, on the basis of obtaining the maximum amplitude and the average amplitude of the audio information, the volume information of the terminal device may also be acquired, and then the audio is determined according to the maximum amplitude, the average amplitude of the audio information, and the volume information of the terminal device. The amplitude adjustment factor corresponding to the amplitude.

In one embodiment, the determining, according to the maximum amplitude of the audio information, the average amplitude, and the volume information of the terminal device, the amplitude adjustment coefficient corresponding to the audio amplitude comprises: if the difference between the maximum amplitude and the average amplitude When the value satisfies the preset condition, the amplitude adjustment coefficient is determined according to the maximum amplitude, the average amplitude, and the volume value. In one embodiment, when the difference between the maximum amplitude and the average amplitude is large (e.g., 0.2 db), to avoid a louder volume when playing to a larger amplitude source, the higher amplitude is adjusted to lower the volume. In an embodiment, if the difference between the maximum amplitude and the average amplitude does not satisfy the preset condition, that is, the phase difference is not large, the audio amplitude of the sound source is not adjusted.

In one embodiment, if the difference between the maximum amplitude and the average amplitude satisfies a preset condition, the amplitude adjustment coefficient may be determined according to the difference between the maximum amplitude and the average amplitude and the volume value. And adjusting, according to the amplitude adjustment coefficient, an audio amplitude of the sound source that is greater than a preset amplitude threshold. In an embodiment, the relationship between the amplitude adjustment coefficients is determined according to the difference between the maximum amplitude and the average amplitude and the current volume value of the terminal device, as shown in Table 4:

Table 4

Amplitude difference	Volume value	Amplitude adjustment factor
Greater than 0.4db	8	0.3
Greater than 0.3db and less than 0.4db	10	0.7
Greater than 0.2db and less than 0.3db	15	0.9

In an embodiment, the preset amplitude threshold may be -2 db, that is, the amplitude of the amplitude greater than the preset amplitude threshold is multiplied by the corresponding amplitude adjustment coefficient to perform amplitude attenuation to reduce the volume. Thereby, the reasonable attenuation of the amplitude portion in the sound source is realized to avoid the sudden sense of hearing, and the sound source playing effect is improved.

Step 504: Adjust an audio amplitude of the sound source according to the amplitude adjustment coefficient and the noise reduction information.

It can be seen from the above that when it is detected that the difference between the maximum amplitude and the average amplitude in the audio information satisfies the preset condition, the amplitude adjustment coefficient is allocated according to the magnitude of the difference and the current volume of the terminal device, thereby improving the playback effect of the sound source. At the same time, the amplitude adjustment coefficient adjusts the amplitude of the sound source that satisfies the condition, improves the volume adjustment efficiency, and avoids the problem that the adjustment effect caused by the synchronous adjustment of the unrelated amplitude in the sound source is poor.

FIG. 7 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: adjusting the amplitude adjustment coefficient according to an impedance value of the terminal device, and correspondingly, adjusting the amplitude The dividing the coefficient into a preset number of sub-amplitude adjustment coefficients comprises: dividing the adjusted amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients. As shown in FIG. 7, the volume adjustment provided by this embodiment includes the following steps.

Step 601: Acquire audio information of the sound source when detecting that the terminal device performs sound source playing.

Step 602: Determine an audio amplitude corresponding to the audio information according to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 603: Determine an amplitude adjustment coefficient corresponding to the audio amplitude, and adjust the amplitude adjustment coefficient according to an impedance value of a playback device of the terminal device.

In one embodiment, the impedance value of the playback device (eg, speaker) installed in the terminal device may be detected by the power amplifier chip, or the impedance of the playback device may be physically detected. In an embodiment, the greater the impedance value, the greater the adjustment to the amplitude adjustment factor. In an embodiment, assuming that the nominal impedance value of the playback device is x, and the impedance value obtained by the detection is 1.2x, the amplitude adjustment coefficient is multiplied by 1.2 according to the determined amplitude adjustment coefficient. Adjusted amplitude adjustment factor.

Step 604: The adjusted amplitude adjustment coefficient is divided into a preset number of sub-amplitude adjustment coefficients, and the audio amplitude is adjusted according to the sub-amplitude adjustment coefficient and the noise reduction information.

It can be seen from the above that in the process of adjusting the amplitude of the sound source, the impedance value of the playback device is introduced as one of the parameters for determining the amplitude adjustment coefficient, thereby avoiding the increase of the impedance value of the playback device with the increase of the playing time, and thus the normal playing. The volume of the process has an impact problem, so that the adjusted volume is better in accordance with the user's needs, further improving the volume adjustment effect.

FIG. 8 is a flowchart of a volume adjustment method according to another embodiment of the present disclosure. In an embodiment, after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: adjusting the amplitude adjustment coefficient according to a noise value of an environment in which the terminal device is located; correspondingly, the amplitude is The dividing the adjustment coefficient into the preset number of sub-amplitude adjustment coefficients comprises: dividing the adjusted amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients. As shown in FIG. 8, the volume adjustment method provided in this embodiment includes the following steps.

Step 701: Acquire audio information of the sound source when detecting that the terminal device performs sound source playing.

Step 702: Determine an audio amplitude corresponding to the audio information according to the audio information, and determine noise reduction information corresponding to the audio amplitude.

Step 703: Determine an amplitude adjustment coefficient corresponding to the audio amplitude, and adjust the amplitude adjustment coefficient according to a noise value of an environment where the terminal device is located.

In one embodiment, the noise of the current environment can be collected by the microphone installed by the terminal device to determine a corresponding noise value. In one implementation, the greater the noise value, the greater the adjustment to the amplitude adjustment factor. In an embodiment, assuming that the noise value of the terminal device in a quiet environment is y, and the determined noise value is 1.5 y when the terminal device is in an outdoor or noisy environment, the corresponding amplitude adjustment coefficient is determined. The amplitude adjustment coefficient is multiplied by 1.5 as the adjusted amplitude adjustment coefficient. In an embodiment, the amplitude adjustment coefficient of the sound source may also be determined jointly according to the impedance value, the noise value, and the magnitude of the audio amplitude.

Step 704: The adjusted amplitude adjustment coefficient is divided into a preset number of sub-amplitude adjustment coefficients, and the audio amplitude is adjusted according to the sub-amplitude adjustment coefficient and the noise reduction information.

It can be seen from the above that in the process of adjusting the amplitude of the sound source, the influence of noise on the volume of the terminal device is considered, and the determined noise value is taken as one of the parameters for determining the amplitude adjustment coefficient, so that the adjusted volume is more in line with the user's demand. Further improved the volume adjustment effect.

FIG. 9 is a structural block diagram of a volume adjustment apparatus according to an embodiment of the present disclosure. The device is configured to perform the volume adjustment method provided by the foregoing embodiment, and has a function module and a beneficial effect corresponding to the execution method. As shown in FIG. 9, the apparatus includes an acquisition module 10, an amplitude determination module 20, an adjustment information determination module 30, and an adjustment module 40.

The obtaining module 10 is configured to acquire audio information of the sound source when detecting that the terminal device performs sound source playing.

The terminal device can play the sound source through the installed third-party application or the audio and video playback software that comes with the system. In an embodiment, the playing of the sound source mainly includes the steps of acquiring, decoding, and outputting the sound source file. In an embodiment, the obtained sound source file may be a multicast stream received through a network, or may be an audio and video file stored locally by the terminal device. In an embodiment, after acquiring the sound source file, the sound source file is loaded into a memory buffer, and the sound source file loaded into the memory buffer is decoded. Before the decoding starts, if the sound source file contains video data at the same time, separation of the audio data and the video data is required, and the separated audio data is input to the audio decoder. In an embodiment, the audio decoder is mainly used for reading audio data in the memory buffer, obtaining a digital audio signal, and converting the digital audio signal into an analog audio signal, and the playing device of the terminal device performs the audio signal according to the analog audio signal. Audio Player. In one embodiment, when it is detected that the sound source play event is triggered, it is determined that the terminal device starts playing the sound source. In an embodiment, the triggering event may be that the playing button displayed in the touch screen is detected to be pressed, or may be determined to determine that the terminal device performs sound source playing when the playing device of the terminal device detects that the sound starts playing.

When the terminal device detects the sound source playing, the audio information of the sound source is acquired. In one embodiment, the digital audio signal decoded by the audio decoder may be sampled to determine audio information corresponding to the audio source. In another embodiment, the original file of the currently played sound source may also be acquired, and the audio information corresponding to the sound source is determined by parsing the original file. In another embodiment, taking the Android system as an example, the audio information of the audio source can be obtained through the android.media.MediaRecorder class or the android.media.AudioRecord class.

The amplitude determining module 20 is configured to determine an audio amplitude corresponding to the audio information according to the audio information.

Amplitude refers to the maximum distance from the original position during the vibration of the object. The loudness of the sound heard by the human ear is related to the amplitude of the sound source. The louder the amplitude, the stronger the loudness. In one embodiment, the digital audio signal decoded by the audio decoder may be sampled to obtain amplitude information within a preset time period T. In an embodiment, the amplitude information may be composed of a plurality of amplitude values, and the amplitude curves of the sound sources played during the preset time period T may be correspondingly determined according to the obtained plurality of amplitude values. In another embodiment, taking the Android system as an example, the audio information of the sound source can be obtained by the android.media.MediaRecorder class or the android.media.AudioRecord class to obtain the corresponding amplitude. In another embodiment, when the acquired audio information is the original file corresponding to the sound source, the original file may be parsed to obtain a corresponding amplitude size.

In one embodiment, when detecting the sound source playing, the amplitude is determined once every preset time (eg, 1 s, 3 s, or 10 s), or the amplitude of each frame of the audio information of the audio information is determined in real time. In an embodiment, the acquiring module 10 is configured to: when detecting that the terminal device performs sound source playing, acquire audio frame information of the sound source; the amplitude determining module 20 is configured to: according to the audio frame information Determining an audio amplitude of each frame of the audio information. In an embodiment, when the sound source is detected, the sound source file is parsed to obtain an audio frame sequence, and the amplitude corresponding to each frame is determined according to each frame of the audio frame sequence.

The adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient and noise reduction information corresponding to the audio amplitude.

In one embodiment, the noise reduction information may be inverted output information of the noise information determined from the audio amplitude. In an embodiment, when the noise amplitude corresponding to the audio amplitude determined according to the audio amplitude is larger, the amplitude of the reverse output in the noise reduction information is correspondingly increased, and the noise amplitude corresponding to the audio amplitude determined according to the audio amplitude is relatively larger. In hours, the amplitude of the reverse output in the noise reduction information is also reduced accordingly, thereby realizing the reasonable determination of the noise reduction information interval by analyzing the audio amplitude, thereby completing the automatic noise reduction, without artificially setting the noise reduction level, and at the same time, The audio amplitude of the real-time input determines the noise reduction information, and the noise reduction effect is better.

The adjustment module 40 is configured to adjust the audio amplitude of the sound source according to the adjustment coefficient and the noise reduction information.

In an embodiment, the adjustment information determining module 30 is further configured to: after determining the amplitude adjustment coefficient corresponding to the audio amplitude, dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients; The module 40 is configured to adjust the audio amplitude according to the sub-amplitude adjustment coefficient and the noise reduction information.

In one embodiment, to increase the volume of the low-amplitude region of the sound source, a large amplitude adjustment coefficient is assigned to the low-amplitude audio amplitude, and a high-amplitude audio amplitude is correspondingly assigned a smaller amplitude adjustment coefficient. In one embodiment, the amplitude adjustment coefficient is 1.2 for audio amplitudes less than -3 db and greater than -10 db, and the amplitude adjustment coefficient is 2 for audio amplitudes less than -10 db and greater than -50 db. At this time, during the sound source playing, if the amplitude of the previous audio amplitude is adjusted by 1.2, and the transition to the next next audio amplitude requires an amplitude adjustment coefficient of 2, the adjusted audio amplitude will have a distinct sense of hearing. The abrupt problem, which is caused by the jump of the amplitude adjustment factor. In an embodiment, the dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients comprises: when detecting that an amplitude adjustment coefficient corresponding to different audio amplitudes satisfies a preset condition, dividing the amplitude adjustment coefficient into A preset number of sub-amplitude adjustment factors. In an embodiment, the sub-amplitude adjustment coefficients are obtained by linear or non-linear division of the amplitude adjustment coefficients. In an embodiment, the preset condition may be that the amplitude adjustment coefficients of the adjacent audio amplitudes are different, for example, the amplitude adjustment coefficient is changed from the amplitude adjustment coefficient 1 of the previous audio amplitude to the amplitude of the latter audio amplitude. The adjustment coefficient 2, or the amplitude adjustment coefficient is changed from 2 to 1.2, etc., at this time, a preset number of sub-amplitude adjustment coefficients can be added between the two amplitude adjustment coefficients corresponding to the adjacent two audio amplitudes. In an embodiment, when the amplitude adjustment coefficients of the determined adjacent audio amplitudes are 1.2 and 2, an additional 9 levels, that is, 1.28, 1.36, 1.42, ..., 1.92, may be added between 1.2 and 2. In the adjustment process, in the transition phase of the amplitude adjustment coefficient 1.2 to 2, each n (for example, n is greater than 1 and less than or equal to 20) frame audio frames may be corresponding to one sub-amplitude adjustment coefficient, and the amplitude of each audio frame is sequentially adjusted. . In an embodiment, when the amplitude adjustment coefficient is changed from 1.2 to 2, the sub-amplitude adjustment coefficient corresponding to the 1-20th audio frame at the beginning of the change is 1.28, and the sub-amplitude adjustment coefficient corresponding to the 21-40th frame audio frame is 1.36. ,And so on.

In an embodiment, the process of adjusting the audio amplitude may be: parsing the audio file, modifying the data representing the amplitude information in the obtained audio data, and then performing the encapsulation after the modification, when buffering to the corresponding audio source. When the file is played, the audio amplitude is correspondingly increased; or, in the decoding process of the sound source playing, the audio amplitude is obtained by analyzing the obtained digital audio signal, and the amplitude data is multiplied by the corresponding amplitude adjustment coefficient. To change the amplitude, adjust the volume of the source. Therefore, the volume of the sound source is adjusted without changing the original volume of the terminal device system, and the adjustment process may reduce the playback load before the sound source file does not enter the buffer, or may be in the buffer. The sound source content is adjusted to improve the adjustment efficiency.

The technical solution provided by the embodiment improves the volume adjustment efficiency, reduces the power consumption of the mobile terminal, and automatically adjusts the audio amplitude by using the noise reduction information, and does not need to manually set the noise reduction level, and at the same time, The audio amplitude of the real-time input determines the noise reduction information, and the noise reduction effect is better.

In an embodiment, the adjustment information determining module 30 is further configured to:

After determining the amplitude adjustment coefficient corresponding to the audio amplitude, the amplitude adjustment coefficient is divided into a preset number of sub-amplitude adjustment coefficients.

The adjustment module 40 is configured to:

The audio amplitude is adjusted according to the sub-amplitude adjustment coefficient and the noise reduction information.

In an embodiment, the adjustment information determining module 30 is configured to divide the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients by:

When detecting that the amplitude adjustment coefficient corresponding to different audio amplitudes satisfies a preset condition, dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients, wherein the sub-amplitude adjustment coefficient is linear according to the amplitude adjustment coefficient or Nonlinear division is obtained.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude by:

An amplitude adjustment coefficient corresponding to the audio amplitude is determined according to the amplitude magnitude of the audio amplitude.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude by:

An amplitude adjustment coefficient corresponding to the audio amplitude is determined according to a maximum amplitude and an average amplitude of the audio information.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude as follows:

And determining, according to the maximum amplitude, the average amplitude of the audio information, and the volume information of the terminal device, an amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume decrease information.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude as follows:

And determining, according to the amplitude magnitude of the audio amplitude and the volume information of the terminal device, an amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume reduction information.

In an embodiment, the adjustment information determining module 30 is further configured to:

After determining the amplitude adjustment coefficient corresponding to the audio amplitude, adjusting the amplitude adjustment coefficient according to the impedance value of the playback device of the terminal device and/or the noise value of the environment in which the terminal device is located;

The adjustment information determining module 30 is configured to divide the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients by dividing the adjusted amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients.

Please refer to FIG. 9 , which is a structural block diagram of a volume adjustment apparatus according to another embodiment of the present disclosure. The device is configured to perform the volume adjustment method provided by the foregoing embodiment, and has a function module and a beneficial effect corresponding to the execution method. As shown in FIG. 9, the apparatus includes an acquisition module 10, an amplitude determination module 20, an adjustment information determination module 30, and an adjustment module 40.

In an embodiment, the obtaining module 10 is configured to acquire audio information of the sound source when the terminal device detects the sound source playing, and the amplitude determining module 20 is configured to determine the audio corresponding to the audio information according to the audio information. An amplitude adjustment adjustment module 30 is configured to determine an amplitude adjustment coefficient and noise reduction information corresponding to the audio amplitude; and an adjustment module 40 configured to adjust an audio amplitude of the sound source according to the adjustment coefficient and the noise reduction information Make adjustments.

In an embodiment, the amplitude determining module 20 is configured to determine, according to the audio information, a plurality of audio amplitudes respectively corresponding to audio information of the plurality of preset time segments in the audio information; the adjustment information determining module 30 Is configured to: determine an amplitude adjustment coefficient and noise reduction information corresponding to each of the audio amplitudes; the adjustment module 40 is configured to: the first amplitude adjustment coefficient corresponding to the first audio amplitude and the adjacent second audio amplitude When a corresponding second amplitude adjustment coefficient is different, a preset number of sub-amplitude adjustment coefficients are added between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient, wherein the preset number of sub-amplitude adjustments The coefficient is sequentially incremented or sequentially decreased between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient; and the noise reduction information corresponding to the preset number of sub-amplitude adjustment coefficients and the second audio amplitude Adjusting a preset number of audio frames from a start frame in the audio information, wherein the start frame is an amplitude adjustment coefficient adjusted by the first amplitude Variation coefficients when the first audio frame to the second amplitude adjusting coefficient.

In an embodiment, the amplitude determining module 20 is configured to: perform at least two sampling of the audio information in each of the preset time periods to obtain at least two corresponding to each of the preset time periods. Audio amplitude; determining an average amplitude between the at least two audio amplitudes corresponding to each of the preset time periods as an audio amplitude corresponding to audio information of each of the preset time periods.

In an embodiment, the amplitude determining module 20 is configured to determine an audio amplitude according to the audio information every the preset time period.

In an embodiment, the amplitude determining module 20 is configured to: determine an audio amplitude corresponding to each frame of the audio information of the audio information according to the audio information, where each frame of the audio frame corresponds to one Preset time period.

In an embodiment, the preset number of audio frames includes: a first group of audio frames to an Mth group of audio frames; and the preset number of sub-amplitude adjustment coefficients includes: a first sub-increment or decrement The amplitude adjustment coefficient to the Nth sub-amplitude adjustment coefficient, wherein M and N are both positive integers greater than or equal to 1, and M is greater than or equal to N; the adjustment module is configured to be implemented according to the preset number as follows a sub-amplitude adjustment coefficient and a noise reduction information corresponding to the second audio amplitude to adjust a preset number of audio frames from a start frame in the audio information: using the first sub-amplitude adjustment coefficient and Adjusting the first set of audio frames by using the noise reduction information corresponding to the second audio amplitude, and adjusting the second set of audio frames by using the second sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude, until And adjusting the Nth group of audio frames by using the Nth sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude.

In an embodiment, the adjustment information determining module 30 is configured to determine, according to the manner, a plurality of amplitude adjustment coefficients that are in one-to-one correspondence with the plurality of audio amplitudes: determining and determining according to the amplitude magnitude of the plurality of audio amplitudes A plurality of amplitude adjustment coefficients corresponding to the plurality of audio amplitudes in one-to-one correspondence.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude by determining: corresponding to the audio amplitude according to a maximum amplitude and an average amplitude of the audio information. Amplitude adjustment factor.

In an embodiment, the adjustment information determining module 30 is configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude by determining a sum according to a maximum amplitude, an average amplitude of the audio information, and volume information of the terminal device. The amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume decrease information.

In an embodiment, the adjustment information determining module 30 is further configured to: adjust the amplitude adjustment coefficient according to at least one of the following information: an impedance value of the playback device of the terminal device and an environment where the terminal device is located a noise value; the adjustment module 40 is configured to increase a preset number of sub-amplitude adjustment coefficients by: adjusting the first amplitude adjustment coefficient corresponding to the first audio amplitude and the adjacent second When the adjusted second amplitude adjustment coefficients corresponding to the audio amplitudes are different, a preset number of sub-amplitude adjustment coefficients are added between the adjusted first amplitude adjustment coefficient and the adjusted second amplitude adjustment coefficient.

The present embodiment provides a terminal device based on the foregoing multiple embodiments. FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 10, the terminal device 200 includes: a memory 201. A central processing unit (CPU) 202, a peripheral interface 203, a radio frequency (RF) circuit 205, an audio circuit 206, a speaker 211, a power management chip 208, and an input/output (I/O) subsystem 209 Touch screen 212, other input/control devices 210, and external port 204 are communicated via one or more communication buses or signal lines 207.

The terminal device 200 illustrated in FIG. 10 is merely an example of a terminal device, and the terminal device 200 may have more or fewer components than those illustrated in FIG. 10, and two or more components may be combined, or Can have different component configurations. The various components shown in FIG. 10 may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The terminal device 200 provided in this embodiment is described in detail below. The terminal device 200 takes a smart phone as an example.

The memory 201 can be accessed by the CPU 202 and the peripheral interface 203, etc., and the memory 201 can include a high speed random access memory, and can also include a nonvolatile memory such as one or more magnetic disk storage devices, flash memory devices. Or other volatile solid-state storage devices.

Peripheral interface 203, which can connect the input and output peripherals of the device to CPU 202 and memory 201.

I/O subsystem 209, which can connect input peripherals and output peripherals on the device, such as touch screen 212 and other input/control devices 210, to peripheral interface 203. The I/O subsystem 209 can include a display controller 2091 and one or more input controllers 2092 that are configured to control other input/control devices 210. Wherein, one or more input controllers 2092 receive electrical signals from other input/control devices 210 or transmit electrical signals to other input/control devices 210, and other input/control devices 210 may include physical buttons (pressing buttons or rocker buttons, etc.) ), dial, slide switch, joystick or click on the wheel. In an embodiment, the input controller 2092 can be coupled to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.

The touch screen 212 is an input interface and an output interface between the user terminal and the user, and displays the visual output to the user. The visual output may include graphics, text, icons, videos, and the like.

Display controller 2091 in I/O subsystem 209 receives electrical signals from touch screen 212 or transmits electrical signals to touch screen 212. The touch screen 212 detects the contact on the touch screen 212, and the display controller 2091 converts the detected contact into an interaction with the user interface object displayed on the touch screen 212, that is, realizes human-computer interaction, and the user interface object displayed on the touch screen 212 may be Run the game's icons or icons that are networked to the appropriate network. In an embodiment, the terminal device 200 may further include a light mouse, which is a touch sensitive surface that does not display a visual output, or an extension of a touch sensitive surface formed by the touch screen.

The RF circuit 205 is configured to establish communication between the mobile phone and the wireless network (ie, the network side) to implement data reception and transmission between the mobile phone and the wireless network. For example, sending and receiving short messages and emails. In an embodiment, the RF circuit 205 receives and transmits an RF signal, also referred to as an electromagnetic signal, and the RF circuit 205 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network And other devices to communicate. The RF circuit 205 may include known circuitry for performing these functions, including but not limited to an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, Coder-CODEter (CODEC) chipset and Subscriber Identity Module (SIM) and so on.

The audio circuit 206 is arranged to receive audio data from the peripheral interface 203, convert the audio data into an electrical signal, and transmit the electrical signal to the speaker 211.

The speaker 211 is arranged to restore the voice signal received by the mobile phone from the wireless network through the RF circuit 205 to sound and play the sound to the user.

The power management chip 208 is configured to provide power and power management for the hardware connected to the CPU 202, the I/O subsystem, and the peripheral interface.

The volume adjustment device and the terminal device of the terminal device provided in the foregoing embodiments may perform the volume adjustment method of the terminal device provided by any embodiment of the present disclosure, and have corresponding function modules and beneficial effects for performing the method. For the technical details that are not described in detail in the above embodiments, reference may be made to the volume adjustment method of the terminal device provided by any embodiment of the present disclosure.

Embodiments of the present disclosure also provide a storage medium including terminal device executable instructions for performing a volume adjustment method when executed by a terminal device processor, the method comprising:

Obtaining audio information of the audio source when detecting the sound source playing by the terminal device; determining an audio amplitude corresponding to the audio information according to the audio information; determining an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information, according to The amplitude adjustment coefficient and the noise reduction information adjust the audio amplitude.

In an embodiment, after the determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients; The adjusting, by the noise reduction information, the audio amplitude comprises: adjusting the audio amplitude according to the sub-amplitude adjustment coefficient and the noise reduction information.

In an embodiment, the dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients comprises:

When detecting that the amplitude adjustment coefficient corresponding to different audio amplitudes satisfies a preset condition, dividing the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients, wherein the sub-amplitude adjustment coefficient is linear or non-linear according to the amplitude adjustment coefficient Linear division is obtained.

In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises:

An amplitude adjustment coefficient corresponding to the audio amplitude is determined according to the amplitude magnitude of the audio amplitude.

In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises:

An amplitude adjustment coefficient corresponding to the audio amplitude is determined according to a maximum amplitude and an average amplitude of the audio information.

In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises:

And determining, according to the maximum amplitude, the average amplitude of the audio information, and the volume information of the terminal device, an amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume decrease information.

In an embodiment, the determining an amplitude adjustment coefficient corresponding to the audio amplitude comprises:

And determining, according to the amplitude magnitude of the audio amplitude and the volume information of the terminal device, an amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume reduction information.

In an embodiment, after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further includes: performing the amplitude adjustment coefficient according to an impedance value of the playback device of the terminal device and/or a noise value of an environment in which the terminal device is located The adjusting the amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients comprises: dividing the adjusted amplitude adjustment coefficient into a preset number of sub-amplitude adjustment coefficients.

Storage media - any of a variety of types of memory devices or storage devices. The term "storage medium" is intended to include: a mounting medium such as a Compact Disc Read-Only Memory (CD-ROM), a floppy disk or a tape device; a computer system memory or a random access memory such as a dynamic random Random Random Access Memory (DRAM), Double Data Rate Random Access Memory (DDR RAM), Static Random Access Memory (SRAM), Extended Data Output Random Extended Data Output Random Access Memory (EDO RAM), Rambus RAM, etc.; non-volatile memory such as flash memory, magnetic media (such as hard disk or optical storage); registers or other similar types of memory Components, etc. The storage medium may also include other types of memory or a combination thereof. Additionally, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system, the second computer system being coupled to the first computer system via a network, such as the Internet. The second computer system can provide program instructions to the first computer for execution. The term "storage medium" can include two or more storage media that can reside in different locations (eg, in different computer systems connected through a network). A storage medium may store program instructions (eg, embodied as a computer program) executable by one or more processors.

A storage medium containing computer executable instructions, the computer executable instructions of which are not limited to the volume adjustment method as described above, and may also perform correlation in the volume adjustment method provided by any embodiment of the present disclosure. operating.

The above are only the embodiments of the present disclosure and the technical principles applied thereto.

Claims (20)

1. A volume adjustment method includes:

   Obtaining audio information of the sound source when detecting that the terminal device performs sound source playing;

   Determining an audio amplitude corresponding to the audio information according to the audio information;

   And determining an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information, and adjusting an audio amplitude of the sound source according to the amplitude adjustment coefficient and the noise reduction information.
2. The method of claim 1 wherein

   Determining the audio amplitude corresponding to the audio information according to the audio information, comprising: determining, according to the audio information, a plurality of audio amplitudes respectively corresponding to audio information of the plurality of preset time segments in the audio information;

   Determining the amplitude adjustment coefficient and the noise reduction information corresponding to the audio amplitude, comprising: determining an amplitude adjustment coefficient and noise reduction information corresponding to each of the audio amplitudes;

   And adjusting the audio amplitude of the sound source according to the amplitude adjustment coefficient and the noise reduction information, comprising: a first amplitude adjustment coefficient corresponding to the first audio amplitude and a second corresponding to the adjacent second audio amplitude When the amplitude adjustment coefficients are different, a preset number of sub-amplitude adjustment coefficients are added between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient, wherein the preset number of sub-amplitude adjustment coefficients are in the The first amplitude adjustment coefficient and the second amplitude adjustment coefficient are sequentially incremented or sequentially decremented; and, according to the preset number of sub-amplitude adjustment coefficients and the second audio amplitude corresponding to the noise reduction information pair a preset number of audio frames starting from a start frame in the audio information, wherein the start frame is when the amplitude adjustment coefficient is changed from the first amplitude adjustment coefficient to the second amplitude adjustment coefficient The first audio frame.
3. The method according to claim 2, wherein the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time periods in the audio information comprises:

   Performing at least two samplings on the audio information in each of the preset time periods to obtain at least two audio amplitudes corresponding to each of the preset time periods;

   And determining an average amplitude between the at least two audio amplitudes corresponding to each of the preset time periods as an audio amplitude corresponding to audio information of each of the preset time periods.
4. The method according to claim 2, wherein the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time periods in the audio information comprises:

   The audio amplitude is determined once according to the audio information every predetermined period of time.
5. The method according to claim 2, wherein the determining, according to the audio information, the plurality of audio amplitudes corresponding to the audio information of the plurality of preset time periods in the audio information comprises:

   Determining, according to the audio information, an audio amplitude corresponding to each frame of the audio information, wherein each frame of the audio frame corresponds to one of the preset time periods.
6. The method according to any one of claims 2 to 5, wherein the preset number of audio frames comprises: a first group of audio frames to an Mth group of audio frames; the preset number of sub-amplitude adjustment coefficients, The method includes: a first sub-amplitude adjustment coefficient sequentially increasing or decreasing to a N-th sub-amplitude adjustment coefficient, wherein M and N are both positive integers greater than or equal to 1, and M is greater than or equal to N;

   And adjusting the preset number of audio frames from the start frame in the audio information according to the preset number of sub-amplitude adjustment coefficients and the noise reduction information corresponding to the second audio amplitude, including:

   Adjusting the first set of audio frames by using the first sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude, using a second sub-amplitude adjustment coefficient and a noise reduction corresponding to the second audio amplitude The information is adjusted for the second set of audio frames until the Nth set of audio frames are adjusted using the Nth sub-amplitude adjustment factor and the noise reduction information corresponding to the second audio amplitude.
7. The method of any one of claims 2-6, wherein the determining a plurality of amplitude adjustment coefficients that correspond one-to-one with the plurality of audio amplitudes comprises:

   And determining a plurality of amplitude adjustment coefficients that are in one-to-one correspondence with the plurality of audio amplitudes according to the amplitude magnitudes of the plurality of audio amplitudes.
8. The method of claim 1 wherein said determining an amplitude adjustment factor corresponding to said audio amplitude comprises:

   An amplitude adjustment coefficient corresponding to the audio amplitude is determined according to a maximum amplitude and an average amplitude of the audio information.
9. The method of claim 1 wherein said determining an amplitude adjustment factor corresponding to said audio amplitude comprises:

   And determining, according to the maximum amplitude, the average amplitude of the audio information, and the volume information of the terminal device, an amplitude adjustment coefficient corresponding to the audio amplitude, wherein the volume information includes volume value information, volume increase information, or volume decrease information.
10. The method according to any one of claims 1 to 9, wherein after determining the amplitude adjustment coefficient corresponding to the audio amplitude, the method further comprises:

    Adjusting the amplitude adjustment coefficient according to at least one of the following information: an impedance value of the playback device of the terminal device and a noise value of an environment in which the terminal device is located;

    When the first amplitude adjustment coefficient corresponding to the first audio amplitude and the second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude are different, the first amplitude adjustment coefficient and the second amplitude adjustment coefficient are Add a preset number of sub-amplitude adjustment factors, including:

    Adjusting the first amplitude adjustment coefficient when the adjusted first amplitude adjustment coefficient corresponding to the first audio amplitude and the adjusted second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude are different A preset number of sub-amplitude adjustment coefficients are added between the adjusted second amplitude adjustment coefficient.
11. A volume adjustment device includes:

    Obtaining a module, configured to acquire audio information of the sound source when detecting that the terminal device performs sound source playing;

    An amplitude determining module, configured to determine an audio amplitude corresponding to the audio information according to the audio information;

    An adjustment information determining module configured to determine an amplitude adjustment coefficient corresponding to the audio amplitude and noise reduction information;

    The adjustment module is configured to adjust an audio amplitude of the sound source according to the adjustment coefficient and the noise reduction information.
12. The apparatus according to claim 11, wherein the amplitude determining module is configured to determine, according to the audio information, a plurality of audio amplitudes respectively corresponding to audio information of a plurality of preset time periods in the audio information;

    The adjustment information determining module is configured to: determine an amplitude adjustment coefficient and noise reduction information corresponding to each of the audio amplitudes;

    The adjusting module is configured to: when the first amplitude adjustment coefficient corresponding to the first audio amplitude and the second amplitude adjustment coefficient corresponding to the adjacent second audio amplitude are different, the first amplitude adjustment coefficient and the Adding a preset number of sub-amplitude adjustment coefficients between the second amplitude adjustment coefficients, wherein the preset number of sub-amplitude adjustment coefficients are sequentially incremented between the first amplitude adjustment coefficient and the second amplitude adjustment coefficient Or sequentially decreasing; and, according to the preset number of sub-amplitude adjustment coefficients and the noise reduction information corresponding to the second audio amplitude, performing a preset number of audio frames starting from a start frame in the audio information. The adjustment, wherein the start frame is a first audio frame when an amplitude adjustment coefficient is changed from the first amplitude adjustment coefficient to the second amplitude adjustment coefficient.
13. The apparatus of claim 12 wherein said amplitude determining module is configured to:

    Performing at least two samplings on the audio information in each of the preset time periods to obtain at least two audio amplitudes corresponding to each of the preset time periods;

    And determining an average amplitude between the at least two audio amplitudes corresponding to each of the preset time periods as an audio amplitude corresponding to audio information of each of the preset time periods.
14. The apparatus according to claim 12, wherein said amplitude determining module is configured to determine an audio amplitude based on said audio information every said predetermined period of time.
15. The apparatus according to claim 12, wherein said amplitude determining module is configured to: determine an audio amplitude corresponding to each frame of the audio frame of said audio information in accordance with said audio information, wherein said each frame of said audio frame Corresponding to one of the preset time periods.
16. The apparatus according to any one of claims 12-15, wherein the preset number of audio frames comprises: a first group of audio frames to an Mth group of audio frames; the preset number of sub-amplitude adjustment coefficients, The method includes: a first sub-amplitude adjustment coefficient sequentially increasing or decreasing to a N-th sub-amplitude adjustment coefficient, wherein M and N are both positive integers greater than or equal to 1, and M is greater than or equal to N;

    The adjustment module is configured to implement, according to the preset number of sub-amplitude adjustment coefficients and noise reduction information corresponding to the second audio amplitude, a preset number from a start frame in the audio information. Adjusting the audio frame by using the first sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude to adjust the first set of audio frames, using the second sub-amplitude adjustment coefficient and the second The noise reduction information corresponding to the audio amplitude adjusts the second group of audio frames until the Nth group of audio frames are adjusted using the Nth sub-amplitude adjustment coefficient and the noise reduction information corresponding to the second audio amplitude.
17. The apparatus according to any one of claims 12-16, wherein the adjustment information determining module is configured to: determine a plurality of one-to-one correspondences with the plurality of audio amplitudes according to an amplitude magnitude of the plurality of audio amplitudes Amplitude adjustment factor.
18. The apparatus according to claim 11, wherein said adjustment information determining module is configured to determine an amplitude adjustment coefficient corresponding to said audio amplitude by: determining and said according to a maximum amplitude and an average amplitude of said audio information The amplitude adjustment factor corresponding to the audio amplitude.
19. A mobile terminal comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer program to implement the method of any one of claims 1-10 The volume adjustment method.
20. A storage medium comprising executable instructions of a mobile terminal, the mobile terminal executable instructions, when executed by a mobile terminal processor, for performing the volume adjustment method of any of claims 1-10.

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