CN102255607B - Method for adjusting output volume and system thereof - Google Patents
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- CN102255607B CN102255607B CN201010175514.2A CN201010175514A CN102255607B CN 102255607 B CN102255607 B CN 102255607B CN 201010175514 A CN201010175514 A CN 201010175514A CN 102255607 B CN102255607 B CN 102255607B
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Abstract
The invention discloses a method for adjusting output volume. The method comprises the following steps: when default output volume can not satisfy a media file output volume requirement, through detecting the output volume of the media file when playing the media file, determining time of carrying out output volume compensation adjustment; carrying out the compensation adjustment to realize self adjusting of the output volume. The invention also discloses a system for adjusting output volume. A determination unit in the system is used for determining time of carrying out output volume compensation adjustment through detecting media file output volume when playing the media file. A compensation adjustment unit in the system is used for realizing self adjusting of the output volume through carrying out the compensation adjustment. According to the method and the system of the present invention, self adjusting of the output volume is realized, and reduction of user experience feeling is avoided.
Description
Technical field
The present invention relates to output volume adjusting technology, relate in particular to the method and system that a kind of output volume to media file while playing media file automatically adjusts.
Background technology
The broadcasting of media file is very general in various multimedia application occasions.Diversity due to media file source, therefore, volume as the media file of source file is all inconsistent conventionally, and in very large range there is fluctuation, although thereby cause user to set in advance suitable output volume for one of them media file, but while changing another one playback of media files into, may there is the inappropriate situation of output volume, too small or the excessive situation of output volume during such as broadcasting media file, if this just needs user to run into the inappropriate situation of the output volume setting in advance, all to re-start for different media files the adjusting of output volume at every turn.Even sometimes user has arrived maximum by the output volume adjusting of media file, but still cannot obtain suitable output volume.Below the solution for output volume adjusting in prior art is introduced.
Here, before introducing the existing solution of various output volume adjusting, the correlation technique conventionally adopting when first output volume is regulated under simple introduction.
One: during adjusting output volume, can relate to merely the only adjusting to hardware output volume; Also can, except relating to the adjusting to hardware output volume, also need in conjunction with the adjusting to software output volume.Wherein, for the adjusting of hardware output volume, so-called hardware output volume refers to: the output volume of the media play hardware adopting while playing media file.Media play hardware is audio output apparatus normally, such as the output volume of the sound card equipment of user's personal computer (PC) machine.Can be by regulating the output volume of sound card equipment to control the size of media file output volume during adjusting.Other audio output apparatus outside non-sound card also can provide the adjusting interface of output volume equally, and the adjustment interface by this output equipment during adjusting carries out manual adjustment, or carries out regulating and controlling by program.For the adjusting of software output volume, so-called software output volume refers to: the output volume of the media play software adopting while playing media file.That is to say, can be by the output volume that the volume adjusting of media play software is obtained before voice data being sent to the output of media play hardware while adopting media play software to play media file.During adjusting, be to realize by the algoritic module in media play software.
When the adjusting of hardware output volume and the adjusting of software output volume combine, final output volume when the adjusting of software output volume equally also can have influence on playback of media files, its reason is: now, size for the final output volume of playback of media files, by the adjusting of software output volume and the coefficient result of adjusting of hardware output volume, voice data first passes through the governing loop of software output volume, and then through the governing loop of hardware output volume, finally obtain the final output volume of media file.
Two: for the Principles of Regulation of output volume, the size of output volume (yet crying gain), be to be determined by voice data amplitude size (or amplitude of waveform), but the two is not linear relation, but the relation of logarithm.The Principles of Regulation of output volume are multiplied by a coefficient to voice data exactly, and the value by this coefficient decides amplifies output volume or dwindles output volume.This coefficient is conventionally also referred to as gain coefficient.
Existing solution one: possess the function of output volume adjusting, but only relate to the adjusting to hardware output volume.This scheme is: set in advance an acquiescence output volume, if this acquiescence output volume is improper when playing media file, user can, by regulating the output volume such as PC sound card equipment, realize the function of output volume adjusting.The shortcoming of this scheme is: due to the adjusting only relating to hardware output volume, therefore, originally with regard to very little media file, just helpless if there is the situation that hardware volume adjusting can not be met the demands to maximum for output volume, not adjusting not thorough.And if while having a plurality of different media files that output volume excursion is large to play simultaneously, in the time of may be for playback of media files, user needs to carry out manual adjustment one time.In a word, what not only regulate is not thorough, and cannot realize the automatic adjusting of output volume.
Existing solution two: with respect to existing solution one, except relating to the adjusting to hardware output volume, also increased the adjusting to software output volume, can make the adjustable range of output volume larger.This scheme is: set in advance respectively a default software output volume and an acquiescence hardware output volume, according to the acquiescence output volume of these two settings, respectively software output volume and hardware output volume are regulated.When playing media file, if the setting of the acquiescence output volume of these two settings is unreasonable, user can further regulate by manual adjustment software volume and hardware volume.The shortcoming of this scheme is: although increased the link to software output volume adjusting with respect to existing solution one, but still can not realize the automatic adjusting of output volume, if improper user intervention the manual adjustment of needing equally of acquiescence output volume arranging.
Existing solution three: this scheme is mainly the automatic gain control of using for reference in video conferencing system, be: the output volume that constantly detects media file, if depart from the target output volume setting in advance, tune up automatically or turn down the output volume of this media file.The shortcoming of this scheme is: although can realize the automatic adjusting of output volume, but this automatic adjusting can cause the output volume variation tendency of same media file and this media file output volume variation tendency originally inconsistent, mainly because the gain coefficient not regulating is in the same time inconsistent, for same media file, such as larger at the output volume of 1 second～3 seconds this media file scripts, and exceeded the target output volume setting in advance, output volume can be turned down automatically; And smaller at the output volume of 3 seconds～5 seconds this media file scripts, and do not reach the target output volume setting in advance, output volume can be tuned up automatically; The rest may be inferred, must cause output volume and this media file output volume variation tendency originally of whole media file reality after automatic adjusting inconsistent, output volume part is large or part is little, cause distortion, use householder to see acoustically to feel its output volume of same media file to neglect large or suddenly little, thereby greatly reduce user's experience sense.
In sum, all there is shortcoming separately in each existing solution above, at present in the urgent need to a kind of solution to output volume adjusting, can take into account automatic adjusting and user's experience sense of output volume, between the two, do a good balance, that is to say, can realize the automatic adjusting of output volume, can avoid again the reduction of user's experience sense.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system that output volume is regulated, and can realize the automatic adjusting of output volume, can avoid again the reduction of user's experience sense.
For achieving the above object, technical scheme of the present invention is achieved in that
The method that output volume is regulated, the method comprises:
The output volume of acquiescence can not meet in the situation that media file output volume requires, and when carries out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file;
By carrying out described compensated regulation, realize the automatic adjusting of output volume.
Wherein, the output volume of described acquiescence comprises:
According to the historical recommendation of output volume, the default software output volume setting in advance respectively and acquiescence hardware output volume.
While wherein, same media file being carried out to described compensated regulation, adopt the gain coefficient V of unique compensated regulation
c.
Wherein, described by detecting when playing media file before when the output volume judgement of media file carry out the compensated regulation of output volume, the method also comprises:
Calculate the yield value G of the current output volume of described media file
c.
Wherein, described compensated regulation of when carrying out output volume by detect the output volume judgement of media file when playing media file comprises:
Needed detection duration length T when whether the duration that judgement detects is less than output volume detection;
If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume;
If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume.
Wherein, the automatic adjusting that realizes output volume by carrying out described compensated regulation comprises:
According in the situation that the duration of described detection be more than or equal to for the first time the G that described T calculates
ccalculate V
c;
According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
The system that output volume is regulated, this system comprises: judging unit and compensated regulation unit; Wherein,
When judging unit, for carrying out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file;
Compensated regulation unit, for realizing the automatic adjusting of output volume by carrying out described compensated regulation.
Wherein, described judging unit, is further used for calculating the G of described media file
cin situation, carry out described judgement.
Wherein, described judging unit, while being further used for carrying out described judgement, needed detection duration length T when whether the duration that judgement detects is less than output volume detection; If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume; If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume.
Wherein, described compensated regulation unit, is further used for basis in the situation that the duration of described detection is more than or equal to the G that described T calculates for the first time
ccalculate V
c; According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
The output volume of the present invention acquiescence can not meet in the situation that media file output volume requires, and when carries out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file; By carrying out described compensated regulation, realize the automatic adjusting of output volume.
Adopt the present invention, by detect the output volume judgement of media file when playing media file, when carry out the compensated regulation of output volume; By carrying out described compensated regulation, realize the automatic adjusting of output volume, can realize the automatic adjusting of output volume, can avoid again the reduction of user's experience sense.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of the inventive method embodiment;
Fig. 2 is the composition structural representation of system embodiment of the present invention.
Embodiment
Basic thought of the present invention is: the output volume of acquiescence can not meet in the situation that media file output volume requires, and when carries out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file; By carrying out described compensated regulation, realize the automatic adjusting of output volume.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
The method that output volume is regulated, the method mainly comprises following content:
One, the output volume of acquiescence can not meet in the situation that media file output volume requires, and when carries out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file.
Two, by carrying out described compensated regulation, realize the automatic adjusting of output volume.
Here it is to be noted: the gain coefficient V that adopts unique compensated regulation when same media file is carried out to described compensated regulation
c.
For above first aspect content, the output volume of described acquiescence comprises: according to the historical recommendation of output volume, and the default software output volume setting in advance respectively and acquiescence hardware output volume.
For above second aspect content, described by detecting when playing media file before when the output volume judgement of media file carry out the compensated regulation of output volume, the method also comprises: the yield value G that calculates the current output volume of described media file
c.
Here, described compensated regulation of when carrying out output volume by detect the output volume judgement of media file when playing media file comprises: needed detection duration length T when whether the duration that judgement detects is less than output volume detection; If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume; If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume.
Here, the automatic adjusting that realizes output volume by carrying out described compensated regulation comprises: according in the situation that the duration of described detection be more than or equal to for the first time the G that described T calculates
ccalculate V
c; According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
Here, the output volume of the described acquiescence relating in above first aspect content, can support user after arranging, to upgrade setting again.If carrying out of relating in above second aspect content upgrades the output volume that is provided with described acquiescence after described compensated regulation, the method also comprises: the output volume that rear acquiescence is set according to renewal carries out calculating and the adjusting of software, hardware output volume adjusting.
In sum, for above first aspect content, benefit of the present invention is: because the output volume of described acquiescence comprises: described default software output volume and described acquiescence hardware output volume, can support to arrange default software output volume and acquiescence hardware output volume simultaneously, therefore in the time of, most playback of media files can being made, all there is desirable output volume.
For above second aspect content, benefit of the present invention is: one,, owing to arranging default software output volume and acquiescence hardware output volume except supporting simultaneously, also increased output volume and when compensated the judgement of adjusting and calculate V
cto compensate the automatic governing loop of adjusting, therefore, output volume problem less than normal still after effectively solving that software and hardware is common and regulating; Two, because described automatic governing loop is automatically to complete by described judgement and the algorithm that carries out described compensated regulation, therefore without user's manual intervention; It is to complete in the very short time of playing at the beginning at media file that output volume during three, due to described judgement detects, and therefore, can determine stable V
c, guarantee that in whole playback of media files process, output volume is stable, there will not be output volume in prior art to have suddenly big or suddenly small problem.
The system that output volume is regulated, this system comprises: judging unit and compensated regulation unit.Wherein, when judging unit is for carrying out the compensated regulation of output volume by detect the output volume judgement of media file when playing media file.Compensated regulation unit is for realizing the automatic adjusting of output volume by carrying out described compensated regulation.
Here, judging unit is further used for calculating the G of described media file
cin situation, carry out described judgement.
Here, when judging unit is further used for carrying out described judgement, needed detection duration length T when whether the duration that judgement detects is less than output volume detection; If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume; If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume.
Here, compensated regulation unit is further used for basis in the situation that the duration of described detection is more than or equal to the G that described T calculates for the first time
ccalculate V
c; According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
Here, this system can also comprise Master Control Unit, and Master Control Unit manages whole system for being responsible for, and provides system to outside interface.
Here, this system can also comprise software output volume adjusting unit and hardware output volume adjusting unit.Wherein, software output volume adjusting unit is for compensating after adjusting in compensated regulation unit, according to V
scarry out the calculating of software output volume adjusting and regulate.Hardware output volume adjusting unit is for compensating after adjusting in compensated regulation unit, according to V
hcarry out the calculating of hardware output volume adjusting and regulate.
Below to the present invention's elaboration of giving an example.
Embodiment of the method: the optimum embodiment that the present embodiment is the inventive method, being the present invention combines the adjusting of the adjusting of hardware output volume and software output volume still can not meet in the situation that output volume requires, by detection, judge when compensate adjusting, the example automatically regulating to realize output volume.
The present embodiment has been in the situation that known default software output volume that employing sets in advance respectively and acquiescence hardware output volume can not meet output volume and requires, and as shown in Figure 1, realizes the flow process that output volume regulates automatically and comprises the following steps:
Here, the concrete processing procedure of this step is: at the G that calculates the media file of current broadcasting
cin situation, needed detection duration length T when whether the duration that first judgement detects is less than output volume detection, if so, continues to detect the output volume of media file, and calculates the G upgrading
c, now do not need to carry out the compensated regulation of output volume, this detection and G
ccalculating upgrade be continued until described detection duration for the first time the situation of >=T just finish; Otherwise, do not continue to detect the output volume of media file, do not calculate the G of renewal yet
c, now need to carry out the compensated regulation of output volume, proceed to execution step 12.
That is to say: in during the duration of described detection < T, can constantly detect the output volume of media file, and calculate the G upgrading
c; Otherwise, after the duration of described detection >=T, just no longer continue to detect, therefore the G that calculates in the situation of >=T for the first time of the duration of described detection
cbe exactly final yield value, no longer need afterwards to continue to detect, also no longer need to calculate the G upgrading
c; Now just need to carry out the compensated regulation of output volume.
Here, the concrete processing procedure of this step is: according in the situation that the duration of described detection >=T calculates for the first time G
c, the gain coefficient V of calculating compensated regulation
c; According to V
ccarry out the compensated regulation of output volume.
Here it is to be noted: V
calso can be called penalty coefficient, V
conly need to calculate once, do not need again to calculate later.Calculate V
ctime main according in the situation that the duration of described detection >=T calculates for the first time G
c, can also be further combined with the gain coefficient V of default software output volume adjusting
s, the gain coefficient V of acquiescence hardware output volume adjusting
h, and the yield value G of target output volume
dcalculate.
Here it is to be noted: although the present embodiment is in the situation that known that default software output volume that employing sets in advance respectively and acquiescence hardware output volume can not meet output volume and require the output volume of taking compensated regulation to realize automatically to regulate, the algorithm that while being actually by above compensated regulation, when this judgement regulates and the calculating of Vc realize the automatic adjusting of output volume, but according to the order of output volume output system, after compensated regulation, still need the output of software volume adjusting and the output of hardware volume adjusting.
In sum: adopt embodiment of the method for the present invention, while starting to play media file, carry out the detection of output volume, in the process of output volume that detects media file, carry out when need the judgement of compensated regulation, to guarantee, only obtaining final G
cv when time just compensates adjusting
ccalculating, and output volume adjusting to suitable level.For same media file, can guarantee to use same V like this
cthis media file is compensated to adjusting, the automatic adjusting of whole media file being unified, each gain coefficient not regulating is in the same time consistent, thereby avoided the output volume variation tendency of the same media file that the gain coefficient that do not regulate in the same time in prior art is inconsistent caused and this media file output volume variation tendency originally inconsistent, thereby the problem that user's experience sense is reduced.Adopt embodiment of the method for the present invention, can not only greatly improve user's experience sense, and be the automatic regulation scheme that a kind of combination software, the output of hardware volume regulate, do not need user to carry out manual intervention, except avoiding in prior art because homology media file fluctuations in volume scope is not larger, while playing different media files, all to carry out the problem of manual adjustment, can also avoid media file volume too small, broadcast sound volume is adjusted to still very little problem of max volume.
System embodiment: the optimum embodiment that the present embodiment is system of the present invention, being the present invention combines the adjusting of the adjusting of hardware output volume and software output volume still can not meet in the situation that output volume requires, by detection, judge when compensate adjusting, the example automatically regulating to realize output volume.
This system can be used as the automatic adjusting that system that automatic volume regulates and software for playback of media files integrate output volume while realizing playback of media files.As shown in Figure 2, this system comprises: Master Control Unit, judging unit, compensated regulation unit, software output volume adjusting unit and hardware output volume adjusting unit.
Wherein, Master Control Unit manages whole system for being responsible for, and provides system to outside interface.
Judging unit is used at the G that calculates the media file of current broadcasting
cin situation, the compensated regulation that when needs to carry out output volume by detect the output volume judgement of media file when playing media file, be: in during the duration < T detecting, can constantly detect the output volume of media file, and calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume, this detection and G
ccalculating upgrade be continued until described detection duration for the first time the situation of >=T just finish; Otherwise, after the duration of described detection >=T, just no longer continue to detect, therefore the G that calculates in the situation of >=T for the first time of the duration of described detection
cbe exactly final yield value, no longer need afterwards to continue to detect, also no longer need to calculate the G upgrading
c; Now just need to carry out the compensated regulation of output volume.
Compensated regulation unit is in the situation that known that default software output volume that employing sets in advance respectively and acquiescence hardware output volume can not meet output volume and require, when duration that judgment result is that described detection of judging unit is for the first time in the situation of >=T, the compensated regulation of carrying out output volume, is: according in the situation that the duration of described detection >=T calculates for the first time G
c, the gain coefficient V of calculating compensated regulation
c; According to V
ccarry out the compensated regulation of output volume.
Software output volume adjusting unit is used for according to V
scarry out the calculating of software output volume adjusting and regulate.
Hardware output volume adjusting unit is used for according to V
hcarry out the calculating of hardware output volume adjusting and regulate.
In sum, adopt system embodiment of the present invention, similar with the effect of the inventive method embodiment, the core of the two is all: by adopting the default software output volume that sets in advance respectively and the adjusting of acquiescence hardware output volume, meet the output volume requirement of most playback of media files; In the situation that known that default software output volume that employing sets in advance respectively and acquiescence hardware output volume can not meet output volume and require, the judgement of duration when media file volume is detected, judge and when compensate adjusting, realize the above-mentioned situation that the adjusting of default settings cannot meet, such as the very little situation of output volume.The whole adjustment process of the present invention completes automatically, has avoided the trouble of the frequent manual adjustment output volume of user, and the automatic adjusting that adopts unified gain coefficient to carry out to whole media file, can greatly improve user's experience sense.
Here it is to be noted: such scheme of the present invention can be applied in user's various terminals, such as mobile phone, on portable shadow/sound amusement equipment, the PC such as personal digital assistant (PDA), PSP and MP3.As long as exist for comprising the software of the playback of media files of shadow/sound in this terminal, all, in protection scope of the present invention, do not repeat.
Here, the symbol relating to is herein gathered and is described as follows:
Symbol can be described in process and use in flow process below, is defined as follows:
V
s: the gain coefficient of default software output volume adjusting;
V
h: the gain coefficient of acquiescence hardware output volume adjusting;
V
c: the gain coefficient of compensated regulation;
G
d: the yield value of target output volume, the db of unit;
G
c: the yield value of current output volume, the db of unit;
T: needed detection duration length when output volume detects.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (6)
1. method output volume being regulated, is characterized in that, the method comprises:
The output volume of acquiescence can not meet in the situation that media file output volume requires, and calculates the yield value G of the current output volume of described media file
c;
Needed detection duration length T when whether the duration that judgement detects is less than output volume detection; If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume; If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume;
By carrying out described compensated regulation, realize the automatic adjusting of output volume.
2. method according to claim 1, is characterized in that, the output volume of described acquiescence comprises:
According to the historical recommendation of output volume, the default software output volume setting in advance respectively and acquiescence hardware output volume.
3. method according to claim 1 and 2, is characterized in that, adopts the gain coefficient V of unique compensated regulation when same media file is carried out to described compensated regulation
c.
4. method according to claim 1, is characterized in that, the automatic adjusting that realizes output volume by carrying out described compensated regulation comprises:
According in the situation that the duration of described detection be more than or equal to for the first time the G that described T calculates
cgain coefficient V
c;
According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
5. system output volume being regulated, is characterized in that, this system comprises: judging unit and compensated regulation unit; Wherein,
Judging unit, can not meet in the situation that media file output volume requires the yield value G of the current output volume of computing medium file for the output volume of giving tacit consent to
c, needed detection duration length T when whether the duration that judgement detects is less than output volume detection; If the duration of described detection is less than described T, continue to detect the output volume of media file, calculate the G upgrading
c, now do not need to carry out the compensated regulation of output volume; If the duration of described detection is more than or equal to described T, do not continue to detect the output volume of media file, do not calculate the G of renewal
c, now need to carry out the compensated regulation of output volume;
Compensated regulation unit, for realizing the automatic adjusting of output volume by carrying out described compensated regulation.
6. system according to claim 5, is characterized in that, described compensated regulation unit is further used for basis in the situation that the duration of described detection is more than or equal to the G that described T calculates for the first time
cgain coefficient V
c; According to described V
ccarry out described compensated regulation, realize the automatic adjusting of output volume.
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| CN103684303B (en) * | 2012-09-12 | 2018-09-04 | 腾讯科技（深圳）有限公司 | A kind of method for controlling volume, device and terminal |
| CN104363510B (en) * | 2014-10-29 | 2019-04-30 | 深圳市金立通信设备有限公司 | A kind of playback terminal |
| CN105554636B (en) * | 2014-10-31 | 2018-12-11 | 惠州市德赛西威汽车电子股份有限公司 | Low bottom is made an uproar the method for adjusting volume in a kind of vehicle audio navigation system |
| CN105323633A (en) * | 2015-11-03 | 2016-02-10 | Tcl集团股份有限公司 | Automatic adjusting method and system for volume of television |
| CN106911979B (en) * | 2017-03-03 | 2019-09-17 | 歌尔股份有限公司 | Volume adjusting method, device and earphone for earphone |
| CN111508520A (en) * | 2020-04-01 | 2020-08-07 | 成都德芯数字科技股份有限公司 | Audio gain control method and device, broadcasting terminal and storage medium |
| CN113835668A (en) * | 2020-06-08 | 2021-12-24 | 成都鼎桥通信技术有限公司 | Terminal volume adjusting method and mobile terminal |
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