CN102724462B - Volume adjusting method and device - Google Patents
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- CN102724462B CN102724462B CN201210180007.7A CN201210180007A CN102724462B CN 102724462 B CN102724462 B CN 102724462B CN 201210180007 A CN201210180007 A CN 201210180007A CN 102724462 B CN102724462 B CN 102724462B
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Abstract
The invention is applicable to the field of television technologies, and provides a volume adjusting method and device. The method comprises the following steps of: when the situation that channels are changed or the contents of TV programs are changed is monitored, according to the volume output value of a current audio frequency subjected to audio decoding, calculating a current volume output reference value; according to a preset reference value of volume adjusting and the current volume output reference value, calculating a volume adjusting coefficient; and according to the volume adjusting coefficient, adjusting the volume output value of the current audio frequency subjected to audio decoding into an actual controlled volume output value. According to the invention, when the situation that the channels are changed or the contents of the TV programs are changed is monitored, the volume adjusting device can adjust the volume value automatically through the preset reference value of volume adjusting.
Description
Technical field
The invention belongs to TV technology, more particularly, to a kind of method adjusting volume, device.
Background technology
Pressure with DTV is carried out, using the frequency more and more higher of TV set-top box in family, but in user
When viewing DTV, for each television channel, it is required for readjusting a volume, especially cuts in TV programme
When changing, television sound volume is suddenly big or suddenly small, brings a lot of inconvenience to user.
At present, the method adjusting DTV volume, mainly adjusts master volume and secondary volume, and this mode was being adjusted
Cheng Zhong, can solve the problems, such as that during user's zapping, volume is inconsistent, but is playing same television channel, content of TV program
During replacing, when such as TV play and advertisement are changed, the sound of TV output still can be suddenly big or suddenly small, is unfavorable for using
TV programme are watched at family.
Content of the invention
Embodiments provide a kind of method adjusting volume, device it is intended to solve the regulation that prior art provides
The method of volume, during switching TV channel or content of TV program are changed, the sound of TV output still can be neglected
Big suddenly little, it is unfavorable for that user watches the problem of TV programme.
On the one hand, provide a kind of method adjusting volume, methods described includes：
When monitoring channel alteration or content of TV program change, according to the present video after audio decoder
Volume output valve, calculates current volume output reference value；
Basis reference value according to default volume adjusting and described current volume output reference value, calculate volume adjusting
Coefficient；
The volume output valve of the present video after audio decoder is adjusted to by reality according to described volume adjusting coefficient
Border controlled volume output valve.
On the other hand, provide a kind of device adjusting volume, described device includes：
Current volume acquiring unit, for when monitoring channel alteration or content of TV program change, according to process
Audio decoder chip carry out audio decoder after present video volume output valve, calculate current volume output reference value；
Adjustment factor acquiring unit, for the basis reference value according to default volume adjusting and described current volume output
Reference value, calculates volume adjusting coefficient；
Sound volume regulation unit, for carrying out audio decoder through audio decoder chip according to described volume adjusting coefficient
The volume output valve of present video afterwards is adjusted to actual controlled volume output valve.
In embodiments of the present invention, adjust volume device only need to basis reference value according to default volume adjusting from
Dynamic regulation volume value, you can allow user have comfortable acoustic environments.No matter and user's switching channels, or same
Channel changes content of TV program, and the device adjusting volume all can automatically adjust according to the basis reference value of default volume adjusting
Volume value, solves the problems, such as that sound is suddenly big or suddenly small when content of TV program replacing or switching TV channel.
Brief description
Fig. 1 is the flowchart of the method for regulation volume that the embodiment of the present invention one provides；
Fig. 2 is the flowchart of the method for regulation volume that the embodiment of the present invention two provides；
Fig. 3 is the flowchart of the method for regulation volume that the embodiment of the present invention three provides；
Fig. 4 is the structured flowchart of the device of regulation volume that the embodiment of the present invention four provides；
Fig. 5 is the structured flowchart of the device of regulation volume that the embodiment of the present invention five provides.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, user only needs to adjust once after audio decoder when watching TV programme
Audio frequency volume output valve, according to described volume value generate volume adjusting basis reference value OutputVol, afterwards, prison
When measuring switching channels or content of TV program replacing, the device adjusting volume just can pass through the reference base of this volume adjusting
Quasi- value automatic regulating volume value.
Below in conjunction with specific embodiment, the realization of the present invention is described in detail：
Embodiment one
Fig. 1 show the embodiment of the present invention one provide the method for regulation volume realize flow process, the method can be applied
In the device adjusting volume, wherein, the device of this regulation volume can be built in DTV it is also possible to be built in permissible
Carry out in the audio/video player of audio frequency broadcasting, the present invention to illustrate taking DTV as a example, and details are as follows：
In step S101, when monitoring channel alteration or content of TV program change, according to through audio decoder
The volume output valve of present video afterwards, calculates current volume output reference value OutputVol '.
In the present embodiment, the device monitoring user of volume whether switching channels or whether carried out TV programme are adjusted
Content alteration, if it is, according to the volume output valve of the present video after audio decoder, calculate current volume output
Reference value OutputVol '.Wherein, each sampling period set in advance calculates the once present video after audio decoder
Volume output valve Vol ', double counting M time, M be default number of times, be natural number, calculate M output valve Vol ' average
Value, described meansigma methodss are exported meansigma methodss OutputVol as the volume of current source of sound '.Sampling period wherein set in advance
Can be 100 milliseconds to 800 milliseconds, M is 3 to 10.
With M for 5, the sampling period set in advance to illustrate here for as a example 500 milliseconds：The device adjusting volume is every
Second calculate volume output valve Vol of the once present video after audio decoder ', calculate 5 times, respectively obtain 5 output
Value Vol1 ', Vol2 ', Vol3 ', Vol4 ' and Vol5 ', then obtain meansigma methodss OutputVol of 5 output valves again '=（Vol1’
+Vol2’+Vol3’+Vol4’+Vol5’）/ 5, OutputVol ' as current volume output reference value and is stored, in advance now
The sampling time setting was as 2.5 seconds.
Specifically, the device adjusting volume can be from the bag mark of TV programme stream（Packet Iddentifier, PID）
Middle acquisition digital TV TS information, contains some information following：
（1）, digital television decoder Program Association Table just can be found by the PID in TS packet header（Program
Association Table, PAT）, that is, PID number be 0x0000 table；
（2）PAT provides each program that current TS is comprised each corresponding Program Map Table（Program
Map Table, PMT）PID；
（3）PMT indicates its video flowing corresponding to described program, audio stream, reference time information（Program
Clock Reference, PCR）PID；
We are taking video as a example, since there being the PID of video place TS bag, that just filters out PID etc. in current TS stream
In the bag of this pid value, the bag sequential that these filter out is it is possible to therefrom restore video flowing.
According to above-mentioned method, we just can respectively obtain each assembly of a program.Have video-frequency basic flow,
Audio stream, reference clock, DTV just can be decoded to program, selects to switch program according to user.
Whether the device adjusting volume can change come the current programme content of interpretation according to the information inside PMT, be
TV programme or advertisement；The channel point being selected according to user, searches corresponding TS code stream pid information, is found according to pid information
PAT, finds PMT inside PAT, and PMT indicates its video flowing corresponding to described program, audio stream, the PID of PCR, root
Just can monitor whether user is changing channel according to these information.Can certainly the channel switch that sends of monitoring user operation
Whether control instruction detection user changes channel, is not restricted here.
In step s 102, defeated with described current volume according to basis reference value OutputVol of default volume adjusting
Go out reference value OutputVol ', calculate volume adjusting coefficient Voladjust.
In the present embodiment, the formula of calculating volume adjusting coefficient Voladjust is：Voladjust=（OutputVol/
OutputVol’）.Wherein, basis reference value OutputVol of default volume adjusting is after user carries out volume adjustment, and just
The basis reference value that often during viewing TV programme, the volume value conveniently of the ratio according to equipment output calculates.
The calculating of described basis reference value OutputVol corresponds to above-mentioned current volume output reference value OutputVol ' meter
Calculation process, specially：
Each sampling period set in advance calculates once output valve Vol of the voice data after audio decoder, weight
Again calculate n times, N be default number of times, be natural number, calculate the meansigma methodss of n times output valve Vol, using described meansigma methodss as
Basis reference value OutputVol of volume adjusting.Here can preset the sampling time for 1 to 3 second.As with the sampling time being
2.5 seconds, N was illustrating as a example 5, now the default sampling period be 500 milliseconds.Adjust 500 milliseconds of the device of volume
Calculate output valve Vol of the once voice data after audio decoder, calculate 5 times, respectively obtain 5 output valves Vol1,
Vol2, Vol3, Vol4 and Vol5, then obtain meansigma methodss OutputVol=of 5 output valves again（Vol1+Vol2+Vol3+
Vol4+Vol5）/ 5, OutputVol as the basis reference value of volume adjusting and is stored.
In step s 103, will be defeated for the volume of the present video after audio decoder according to described volume adjusting coefficient
Go out value and be adjusted to actual controlled volume output valve.
In the present embodiment, described actual controlled volume output valve is according to the volume of the present video after audio decoder
Output valve and described volume adjusting coefficient, are calculated by actual audio amplitude function, and described actual audio amplitude function is：
Vol " '=Vol " * Voladjust, wherein Vol " is the volume output valve of the present video after audio decoder,
Voladjust is volume adjusting coefficient, Vol " ' it is actual volume output valve.
The present embodiment, the device adjusting volume only needs to automatically adjust sound according to the basis reference value of default volume adjusting
Value, you can allow user have comfortable acoustic environments.No matter and user's switching channels, or changing in same channel
Content of TV program, adjust volume device all can according to the basis reference value automatic regulating volume value of default volume adjusting,
Solve the problems, such as that sound is suddenly big or suddenly small when content of TV program replacing or switching TV channel.
Embodiment two
Fig. 2 show the embodiment of the present invention two provide the method for regulation volume realize flow process, details are as follows：
In step s 201, after monitoring user's adjustment volume, and when normally watching TV programme, obtain equipment actual
Output volume value, generates basis reference value OutputVol of volume adjusting, and stores according to described reality output volume value.Institute
State equipment reality output volume value, refer to the drive signal amplitude value of speaker；Can also raise one's voice for the detection of volume sensor
The signal value that the volume of device output produces.
In equipment, when such as TV dispatches from the factory, described basis reference value OutputVol is provided with default value in a device, when with
When watching TV programme and after have adjusted volume, equipment generates volume adjusting further according to described standby reality output volume value at family
Basis reference value OutputVol.
In the present embodiment, after the device adjusting volume adjusts volume according to user, using following method next life audios
Basis reference value OutputVol that amount is adjusted.
The volume output of present video includes master volume and fine setting volume, first calculates the sampling period of setting（As 500 millis
Second）The average output value of interior described fine setting volume and maximum output value, then calculate described average output value and maximum output value
Between ratio, and using described ratio as volume adjusting basis reference value OutputVol.For example as follows：Work as regulation
The device of volume sets after the volume of audio frequency broadcasting according to the volume value of user input, is currently exported after audio decoder
Voice data according to Digital Signal Processing（Digital Signal Processing, DSP）Volume specification setting in system
For 0 and 1,0 is minimum volume, represents do not have voice output, and 1 is max volume.Such as, by volume output valve according to 24bit's
Digital information processing system calculates, maximum 1, and corresponding dsp system value of calculation is 0X7FFFFF（Highest order is sign bit）, take
1 second（Or the less time）The voice data after audio decoder, the volume calculating in this 1 second averagely exports
Value and the ratio of maximum 0X7FFFFF, this value is the basis reference value of volume adjusting, i.e. the standard ginseng of user's optimum volume
Number.
In step S202, when monitoring channel alteration or content of TV program change, according to through audio decoder
The volume output valve of present video afterwards, calculates current volume output reference value OutputVol '.
In the present embodiment, this current volume output reference value OutputVol ' process with the basis reference of the present embodiment
The technical method of value OutputVol is consistent, but sampling periods are different.Monitor user channel change or content of TV program
After change, the volume output of present video includes master volume and fine setting volume, first calculates in the sampling period set in advance（As
500 milliseconds）The average output value of described fine setting volume and maximum output value, then calculate described average output value and maximum output
Ratio between value, and using described ratio as described current volume output reference value.
In step S203, defeated with described current volume according to basis reference value OutputVol of default volume adjusting
Go out reference value OutputVol ', calculate volume adjusting coefficient Voladjust.
In step S204, will be defeated for the volume of the present video after audio decoder according to described volume adjusting coefficient
Go out value and be adjusted to actual controlled volume output valve.
In the present embodiment, step S102-S103 in step S203-S204 executes content and above-described embodiment one
Implementation procedure is similar to, and details are referring to the description of above-described embodiment one.
The present embodiment, user only needs in viewing TV programme, and after have adjusted volume, system is optimal user setup
Under auditory effect state, obtain the volume value of equipment output, generate the basis reference of volume adjusting according to described equipment output valve
Value OutputVol.Afterwards, when monitoring channel alteration or content of TV program change, the device adjusting volume is just permissible
By the basis reference value automatic regulating volume value of this volume adjusting, you can allow user have comfortable acoustic environments to solve
Content of TV program change or when switching TV channel the suddenly big or suddenly small problem of sound it is most important that, user is only
Need to adjust a volume value when watching TV programme, eliminating prior art needs repeatedly to input volume value to adjust volume
Trouble, greatly improve the experience effect of user.
Embodiment three
Fig. 3 show the embodiment of the present invention three provide the method for regulation volume realize flow process, details are as follows：
In step S301, when monitoring that user is when watching TV programme, obtain equipment reality output volume value, root
Generate basis reference value OutputVol of volume adjusting according to described reality output volume value, and store.
In step s 302, the volume output valve according to the present video after audio decoder, calculates current volume
Output reference value OutputVol '.
In step S303, when monitoring channel alteration or content of TV program change, detection current volume output
Reference value, and judge described current volume output reference value and the ratio of the basis reference value of default volume adjusting whether pre-
If threshold range, if not in default threshold range, execution step S304, otherwise exit.In this step, described
Detection current volume output reference value, it is also possible to setting detection cycle, carries out repeated detection to current volume output reference value, with
Improve accuracy in detection.
In embodiments of the present invention, when monitoring that switching channels or content of TV program are changed, detection current volume is defeated
Go out reference value, and judge that whether the ratio of described current volume output reference value and the basis reference value of default volume adjusting exist
Default threshold range, if not in default threshold range, execution step S303, otherwise exits.In the present embodiment,
The scope of described threshold values is 0.8～1.2.
In step s 304, defeated with described current volume according to basis reference value OutputVol of default volume adjusting
Go out reference value OutputVol ', calculate volume adjusting coefficient Voladjust.
In step S305, will be defeated for the volume of the present video after audio decoder according to described volume adjusting coefficient
Go out value and be adjusted to actual controlled volume output valve.
In the present embodiment, step S102-S103 in the execution of step S304-S305 and above-described embodiment one or reality
The implementation procedure applying step S203-S204 in example two is similar to, and, referring to the description of above-described embodiment one, here is no longer superfluous for details
State.
In the present embodiment, when monitoring channel alteration or content of TV program change, detection current volume output base
Quasi- value, if described current volume output reference value OutputVol ' basis reference value with default volume adjusting
The ratio of OutputVol not in default threshold range then it represents that current volume is unsuitable for user, then according to calculating
Volume adjusting coefficient, the output volume of present video is adjusted.In addition, in above-mentioned steps, do not affecting audio sample
On the premise of, system temporarily can not export sound with controlling loudspeaker, or from childhood to big gradual change output sound, to prevent
Mutation output before volume controlled interferes to user.
Example IV
Fig. 4 shows the concrete structure block diagram of the device of regulation volume that the embodiment of the present invention three provides, for the ease of saying
Bright, illustrate only the part related to the embodiment of the present invention.In the present embodiment, the device of this adjustment volume can be built in
The unit of the software unit in TV, hardware cell or software and hardware combining or be built in audio/video player
The unit of software unit, hardware cell or software and hardware combining, the device of this regulation volume includes：Current volume acquiring unit
41st, adjustment factor acquiring unit 42 and sound volume regulation unit 43.
Wherein, current volume acquiring unit 41, for when monitor channel alteration or content of TV program change when, root
According to the volume output valve carrying out the present video after audio decoder through audio decoder chip, calculate current volume output reference
Value；
Adjustment factor acquiring unit 42, defeated with described current volume for the basis reference value according to default volume adjusting
Go out reference value, calculate volume adjusting coefficient；
Sound volume regulation unit 43, for carrying out audio frequency solution through audio decoder chip according to described volume adjusting coefficient
The volume output valve of the present video after code is adjusted to actual controlled volume output valve.
The device adjusting volume provided in an embodiment of the present invention can be applied in aforementioned corresponding embodiment of the method one, in detail
Feelings, referring to the description of above-described embodiment one, will not be described here.
Embodiment five
Fig. 5 shows the concrete structure block diagram of the device of regulation volume that the embodiment of the present invention four provides, for the ease of saying
Bright, illustrate only the part related to the embodiment of the present invention.In the present embodiment, the device of this adjustment volume can be built in
The unit of the software unit in TV, hardware cell or software and hardware combining or be built in and can carry out audio frequency broadcasting
Audio/video player in software unit, hardware cell or software and hardware combining unit, the device of this regulation volume includes：
Basis reference value signal generating unit 51, current volume acquiring unit 52, volume monitoring unit 53, volume judging unit 54, regulation system
Number acquiring unit 55 and sound volume regulation unit 56.
Wherein, basis reference value signal generating unit 51, for when monitor user adjustment volume after, and normally watch TV Festival
During mesh, obtain equipment reality output volume value, generate the basis reference value of volume adjusting according to described actual volume output valve
OutputVol, and store；
Current volume acquiring unit 52, for when monitoring channel alteration or content of TV program change, according to warp
Cross the volume output valve of the present video after audio decoder chip carries out audio decoder, calculate current volume output reference value；
Volume monitoring unit 53, for detecting current volume output reference value, such as setting detection cycle, defeated to current volume
Go out reference value to be detected；
Volume judging unit 54, for when monitoring channel alteration or content of TV program change, judging described working as
The ratio of the basis reference value of front volume output reference value and default volume adjusting whether in default threshold range, if not
In default threshold range, then sound volume regulation unit 56 execution volume adjusting, carries out audio frequency according to through audio decoder chip
The volume output valve of decoded present video, calculates current volume output reference value；
Adjustment factor acquiring unit 55, defeated with described current volume for the basis reference value according to default volume adjusting
Go out reference value, calculate volume adjusting coefficient；
Audio decoder chip is carried out audio frequency solution for controlling according to described volume adjusting coefficient by sound volume regulation unit 56
The volume output valve of the present video after code is adjusted to actual controlled volume output valve.
The device adjusting volume provided in an embodiment of the present invention can be applied in aforementioned corresponding embodiment of the method two and three
In, details, referring to the description of above-described embodiment two and three, will not be described here.
It should be noted that in said system embodiment, included unit simply carries out drawing according to function logic
Point, but it is not limited to above-mentioned division, as long as being capable of corresponding function；In addition, each functional unit is concrete
Title also only to facilitate mutual distinguish, is not limited to protection scope of the present invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in the various embodiments described above method
The program that can be by complete come the hardware to instruct correlation, and corresponding program can be stored in an embodied on computer readable storage and be situated between
In matter, described storage medium, such as ROM/RAM, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of method adjusting volume is it is characterised in that methods described includes：
After monitoring user's adjustment volume, obtain equipment reality output volume value, generated according to described reality output volume value
The basis reference value of volume adjusting, and store；
When monitor channel alteration or play same television channel but content of TV program change when, according to through audio frequency
The volume output valve of decoded present video, calculates current volume output reference value；
Basis reference value according to described volume adjusting and described current volume output reference value, calculate volume adjusting coefficient；
According to described volume adjusting coefficient, the volume output valve of the present video after audio decoder is adjusted to reality to be subject to
Control volume output valve；
Wherein, described basis reference value and the calculating of described current volume output reference value are specially：
The volume output of audio frequency includes master volume and fine setting volume, calculates described fine setting volume in the sampling period set in advance
Average output value and maximum output value；
Calculate the ratio between described average output value and maximum output value, and using described ratio as described basis reference
Value or current volume output reference value.
2. the method for claim 1 is it is characterised in that the volume adjusting coefficient described in described basis will be through audio frequency solution
Before the volume output valve of the present video after code is adjusted to actual controlled volume output valve step, also include：
Controlling loudspeaker does not temporarily export sound, or from childhood to big gradual change output sound.
3. the method for claim 1 is it is characterised in that in the described sound according to the present video after audio decoder
Amount output valve, after calculating current volume output reference value step, methods described also includes：
Detection current volume output reference value, judges the basis reference of described current volume output reference value and described volume adjusting
Whether the ratio of value, in default threshold range, if not in default threshold range, continues executing with according to default sound
The basis reference value that amount is adjusted and described current volume output reference value, the step calculating volume adjusting coefficient, otherwise exit.
4. the method for claim 1 is it is characterised in that the computing formula of described volume adjusting coefficient is：Voladjust
=(OutputVol/OutputVol '), wherein Voladjust are volume adjusting coefficient, and OutputVol is basis reference value,
OutputVol ' is current volume output reference value.
5. the method for claim 1 is it is characterised in that the volume adjusting coefficient described in described basis will be through audio frequency solution
The volume output valve of the present video after code is adjusted in actual controlled volume output valve step, described actual controlled volume output
It is worth the volume output valve according to the present video after audio decoder and described volume adjusting coefficient, by actual audio width
Degree function calculates, and described actual audio amplitude function is：
Vol " '=Vol " * Voladjust, wherein Vol " is the volume output valve of the present video after audio decoder,
Voladjust is volume adjusting coefficient, Vol " ' it is actual controlled volume output valve.
6. a kind of device of the regulation volume using method as claimed in claim 1 is it is characterised in that described device includes：
Basis reference value signal generating unit, for, after monitoring user's adjustment volume, obtaining equipment reality output volume value, according to
Described reality output volume value generates the basis reference value of volume adjusting, and stores；
Current volume acquiring unit, monitors channel alteration or in the same television channel of broadcasting but in TV programme for working as
When holding change, according to the volume output valve carrying out the present video after audio decoder through audio decoder chip, calculate current
Volume output reference value；
Adjustment factor acquiring unit, for the basis reference value according to described volume adjusting and described current volume output reference
Value, calculates volume adjusting coefficient；
Sound volume regulation unit, for carrying out after audio decoder through audio decoder chip according to described volume adjusting coefficient
The volume output valve of present video is adjusted to actual controlled volume output valve；
Wherein, the calculating of the described basis reference value in described basis reference value signal generating unit is specially：
The volume output of audio frequency includes master volume and fine setting volume, calculates described fine setting volume in the sampling period set in advance
Average output value and maximum output value；
Calculate the ratio between described average output value and maximum output value, and using described ratio as described basis reference
Value；
The calculating of the described current volume output reference value in described current volume acquiring unit is specially：
The volume output of audio frequency includes master volume and fine setting volume, calculates described fine setting volume in the sampling period set in advance
Average output value and maximum output value；
Calculate the ratio between described average output value and maximum output value, and described ratio is defeated as described current volume
Go out reference value.
7. device as claimed in claim 6 is it is characterised in that described device also includes：
Volume monitoring unit, for detecting current volume output reference value；
Volume judging unit, for judging described current volume output reference value and the basis reference value of default volume adjusting
Ratio whether in default threshold range, if not in default threshold range, to sound volume regulation unit output volume control
Information processed, sound volume regulation unit executes volume adjustment, output-controlled volume according to described volume control information.
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| CN103905672B (en) * | 2012-12-28 | 2016-08-03 | 鸿富锦精密工业（深圳）有限公司 | Volume adjusting method and system |
| CN104052949B (en) * | 2013-03-14 | 2019-03-29 | 联想(北京)有限公司 | Volume adjusting method, device and electronic equipment |
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| CN105681876A (en) * | 2015-12-30 | 2016-06-15 | 惠州市伟乐科技股份有限公司 | Audio loudness uniformity control method and system of radio and television broadcasting system |
| CN105810204A (en) * | 2016-03-16 | 2016-07-27 | 深圳市智骏数据科技有限公司 | Audio level detecting and adjusting method and device |
| CN106210879A (en) * | 2016-08-16 | 2016-12-07 | 微鲸科技有限公司 | intelligent volume control system and intelligent volume control method |
| CN106293606A (en) * | 2016-08-16 | 2017-01-04 | 微鲸科技有限公司 | Sound-volume control system and method for controlling volume |
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| CN114845140B (en) * | 2021-01-31 | 2024-04-12 | 华为技术有限公司 | Volume adjusting method and large-screen electronic equipment |
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| KR100561440B1 (en) * | 2004-07-24 | 2006-03-17 | 삼성전자주식회사 | Apparatus and method for compensating audio volume automatically in response to the change of channel |
| US7995775B2 (en) * | 2006-07-14 | 2011-08-09 | Broadcom Corporation | Automatic volume control for audio signals |
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| CN1206985A (en) * | 1997-06-11 | 1999-02-03 | Lg电子株式会社 | Method and device for automatic compensating sound volume |
| CN1980054A (en) * | 2005-11-30 | 2007-06-13 | 鸿富锦精密工业（深圳）有限公司 | Audio-frequency processing device and sound-volume management method |
| CN101489070A (en) * | 2009-02-17 | 2009-07-22 | 华为技术有限公司 | Television volume regulating method, apparatus and system |
| CN102355562A (en) * | 2011-09-16 | 2012-02-15 | 青岛海信移动通信技术股份有限公司 | Volume control method and equipment |
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