CN103716568A - Television volume adjustment method and system - Google Patents
Television volume adjustment method and system Download PDFInfo
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- CN103716568A CN103716568A CN201310755711.5A CN201310755711A CN103716568A CN 103716568 A CN103716568 A CN 103716568A CN 201310755711 A CN201310755711 A CN 201310755711A CN 103716568 A CN103716568 A CN 103716568A
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Abstract
The invention discloses a television volume adjustment method and system. The television volume adjustment system comprises a processing unit, an audio decoder, an arithmetic unit and an audio output coder/decoder. Whether a volume adjustment program is performed or not is selected by judging formats of audio coding data. In the volume adjustment program, the audio coding data are decoded into audio data of a pulse coding modulation format, then gain processing is performed on sampling values of a plurality of sampling points of the audio data of the pulse coding modulation format through the arithmetic unit, the volume of the audio data of the pulse coding modulation format after gaining adjustment is made to reach a target volume, and therefore the audio coding data of different formats can have volume output effects at similar levels or the same level.
Description
Technical field
The application relates to field of television, is specifically related to a kind of television sound volume method of adjustment and system.
Background technology
In recent years, along with the high speed development of growth in the living standard and entertainment communication media, use video equipment to watch film or TV programme to become modern and obtain one of mode of new knowledge or fresh information, a kind of mode that also can be used for as amusement and recreation.Therefore, audio-visual quality when televising program or film comes into one's own day by day with impression, particularly for tonequality, volume, the requirement of the adjusting variation function of stereophonic effect and multiple audio etc. is more and more higher, so develop multiple high quality audio encoding data format, Dolby Digital (Dolby digital) form for example, Digital Theater System (Digital theater system, DTS) form or Advanced Audio Coding (Advanced audio coding, AAC) coded audio data of form, in order to high-quality to be provided, undistorted and allow people be personally on the scene voice output effect.
Yet because the generating mode of the coded audio data of different-format is different, the volume value that therefore itself can present is also not quite similar, while causing these coded audio datas to be play on video equipment, the inconsistent phenomenon of generation volume output effect.For example, the volume value that the coded audio data of Dolby Digital form or Digital Theater System form can present is less than the volume value of the coded audio data of Advanced Audio Coding form.Therefore, when video equipment is when playing the less coded audio data of these original sound volume values, owing to being limited to, original sound volume value is too little, cause user when the user interface by video equipment is carried out volume adjustment, even the volume value of video equipment is transferred to maximum, also cannot obtain the volume of expection, and have a strong impact on voice output effect, even allow user abandon the film of this audio coding form of watch.Or, when user is switched between different programs or film, also easy because the audio coding form that these programs or film adopt is different, and cause the volume problem fluctuated of video equipment, thus significantly reduce the quality of viewing and admiring of program or film.
Summary of the invention
The application's technical problem to be solved is to provide a kind of television sound volume method of adjustment and system, the volume value that is decoded as the voice data of pulse code modulation format and the voice data of algorithm unit paired pulses coding modulation format by voice data carries out gain process, and then make the volume output of rear end can reach target volume value, thereby solved the output volume problem not of uniform size of the coded audio data of different-format.
In order to address the above problem, the application has disclosed a kind of television sound volume method of adjustment, comprising: audio reception coded data; And judge whether to adjust volume value according to the form of coded audio data; If so, carry out volume adjustment programme; If not, cancel volume adjustment, wherein volume adjustment programme comprises: the voice data that voice data is decoded as to pulse code modulation format; Obtain the sampled value of a plurality of sampled points of the voice data of pulse code modulation format, and according to sampled value, calculate the original sound volume value of the voice data of pulse code modulation format; According to target volume value and original sound volume value gain coefficient; By gain coefficient, the sampled value of a plurality of sampled points is carried out to gain process, obtain the voice data of the pulse code modulation format after gain is adjusted; The coded audio data of the audio data coding of the pulse code modulation format after gain is adjusted for gaining after adjusting; And the coded audio data after output gain adjustment.
The application has also disclosed a kind of television sound volume adjustment System, comprises processing unit, audio decoder, algorithm unit and audio frequency output codec.Processing unit is in order to audio reception coded data, and judges whether to adjust volume value according to the form of coded audio data.Audio decoder is coupled to processing unit, in order to receive audio/video coding data, and coded audio data is decoded as to the voice data of pulse code modulation (PCM) form.Algorithm unit is coupled to audio decoder, in order to calculate original sound volume value and the gain coefficient of the voice data of pulse code modulation format, and by gain coefficient, the sampled value of a plurality of sampled points is carried out to gain process, to obtain the voice data of the pulse code modulation format after gain is adjusted.Audio frequency output codec is coupled to algorithm unit, in order to the coded audio data for gaining after adjusting by the audio data coding of the pulse code modulation format after adjusting that gains, and the coded audio data after output gain adjustment.
Compared with prior art, the application can obtain and comprise following technique effect:
The application's television sound volume method of adjustment and system, first identify the form of coded audio data by processing unit, can be only for the volume value of the coded audio data of some form, adjust, thereby save volume adjustment programme.In addition, by audio decoder, coded audio data is decoded as to the voice data of pulse code modulation format, and the sampled value of a plurality of sampled points of the voice data by algorithm unit paired pulses coding modulation format is carried out gain process, the volume value of the voice data of the pulse code modulation format after allowing gain adjust reaches target volume value, thereby in the volume output of rear end, can reach the volume output effect close or identical with the coded audio data of extended formatting, allow the output volume of coded audio data of different-format there is consistency, and can be because of the difference of form, produce the excessive or too small problem of volume.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, forms the application's a part, and the application's schematic description and description is used for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the block schematic diagram of the television sound volume adjustment System of the embodiment of the present application.
Fig. 2 is the television sound volume method of adjustment flow chart of the embodiment of the present application.
Fig. 3 is the flow chart of the volume adjustment programme of the embodiment of the present application.
Embodiment
To coordinate drawings and Examples to describe the application's execution mode in detail below, by this application's implementation procedure how application technology means solve technical problem and reach technology effect can be fully understood and be implemented according to this.
As used some vocabulary in the middle of specification and claim, censure specific components.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the difference in function is used as the criterion of distinguishing with assembly.If " comprising " mentioned in the middle of specification and claim is in the whole text an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in receivable error range, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.In addition " couple ", or " electric connection " word comprises directly any and electric property coupling means indirectly at this.Therefore, if describe a first device in literary composition, be coupled to one second device, represent that described first device can directly be electrically coupled to described the second device, or be indirectly electrically coupled to described the second device by other devices or the means that couple.Specification subsequent descriptions is for implementing the application's better embodiment, and right described description is to illustrate that the application's rule is object, not in order to limit the application's scope.The application's protection range is when being as the criterion depending on the claims person of defining.
Also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, commodity or the system that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, commodity or system.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, commodity or the system that comprises described key element and also have other identical element.
the application's application scenarios
When by TV watching Online Video, when the audio data format of watched film is Dolby Digital form or Digital Theater System form, because the volume of film source itself is less, though cause that television sound volume opens greatly also cannot reach again expection volume time, applicable the application's scheme.
embodiment describes
As shown in Figure 1, be the block schematic diagram of the television sound volume adjustment System of the embodiment of the present application.The disclosed television sound volume adjustment System 10 of the embodiment of the present application, comprises processing unit 110, audio decoder 120, algorithm unit 130 and audio frequency output codec 140.Processing unit 110 is coupled to audio-video signal source, in order to receive audio/video coding data, and is video data encoder and coded audio data by audio/video coding data separating; Or receive only coded audio data.Simultaneously, processing unit 110 is also in order to identify the form of coded audio data, such as Dolby Digital form, Digital Theater System form (DTS) or Advanced Audio Coding (AAC) form etc., and judge whether its volume value to adjust according to the form of coded audio data.Audio decoder 120 is coupled to processing unit 110, in order to receive audio/video coding data, and coded audio data is decoded as to the voice data of pulse code modulation (Pulse-code modulation, PCM) form.Algorithm unit 130 is coupled to audio decoder 120, in order to calculate original sound volume value and the gain coefficient of the voice data of pulse code modulation format, and by gain coefficient, the sampled value of a plurality of sampled points is carried out to gain process, thereby obtain the voice data of the pulse code modulation format after gain is adjusted.Audio frequency output codec (Codec) 140 is coupled to algorithm unit 130, in order to the coded audio data for gaining after adjusting by the audio data coding of the pulse code modulation format after adjusting that gains, and the coded audio data after output gain adjustment.
By certain methods embodiment, the application's television sound volume adjustment System is described further for the method that realizes television sound volume adjustment below.As shown in Figure 2, the television sound volume method of adjustment flow chart for the embodiment of the present application, comprising:
Step S100, audio reception coded data; And
Step S200, judges whether to adjust volume value according to the form of coded audio data;
Step S210, if not, cancels volume adjustment; And
Step S220, if so, carries out volume adjustment programme.
Please refer to Fig. 1 and Fig. 2, in the present embodiment, by processing unit 110, from audio-video signal source audio reception coded data, then identify the form of coded audio data, and judge whether according to this to adjust volume value.The object of carrying out this step is, the wave volume of exporting by the coded audio data of different-format varies in size, for example, if max volume is 0 decibel (dB), the volume value of the coded audio data of Advanced Audio Coding (AAC) form can reach-23 decibels (dB), therefore, for can only reaching the coded audio data of the Dolby Digital form of-31 decibels or Digital Theater System (DTS) form, there is enough output sound values, and do not needed again its volume to be adjusted.Otherwise, because the volume value of the coded audio data of Dolby Digital form or Digital Theater System (DTS) form itself is less, may, in the volume output program of rear end, cannot reach the volume value of expection, and must first its volume value be amplified, just can meet user demand.
Therefore, form by above-mentioned steps S200 encode audio data is first done knowledge, if belong to the form that volume value has reached broadcasting demand, does not need it to carry out volume adjustment (step S210), thus, can save the handling procedure of coded audio data.Otherwise if belong to Dolby Digital form or Digital Theater System (DTS) form etc., the coded audio data that former volume value is less, carries out volume adjustment programme (step S220) to it.Being understandable that, in this application, can be also after the form of judgement coded audio data, no matter the form of coded audio data why, all carry out follow-up volume adjustment programme, then, in volume adjustment programme, volume value is regulated or maintain former volume value.
As shown in Figure 3, above-mentioned volume adjustment programme comprises:
Step S221, is decoded as voice data the voice data of pulse code modulation format;
Step S222, obtains the sampled value of a plurality of sampled points of the voice data of pulse code modulation format, and according to sampled value, calculates the original sound volume value of the voice data of pulse code modulation format;
Step S223, according to target volume value and original sound volume value gain coefficient;
Step S224, carries out gain process by gain coefficient to the sampled value of a plurality of sampled points, obtains the voice data of the pulse code modulation format after gain is adjusted;
Step S225, the coded audio data of the audio data coding of the pulse code modulation format after gain is adjusted for gaining after adjusting; And
Step S226, the coded audio data after output gain is adjusted.
Please refer to Fig. 1 to Fig. 3, after the form of identification coded audio data, processing unit 110 is sent to audio decoder 120 by coded audio data, by audio decoder 120 encode audio decoding data programs, allow coded audio data be decoded as the voice data (step S221) of pulse code modulation (PCM) form.Then, voice data by algorithm unit 130 paired pulses coding modulation format is sampled, for example, with 16bit binary representation sampled point, thereby obtain the sampled value of a plurality of sampled points of the voice data of pulse code modulation format, then according to these sampled values, calculate the original sound volume value (step S222) of the voice data of pulse code modulation format.
Simultaneously, algorithm unit 130 is according to target volume value and original sound volume value gain coefficient (step S223), if for example target volume value is-23 decibels, and original sound volume value only reaches-31 decibels, volume gap between the two reaches 8 decibels, and algorithm unit 130 i.e. the size of gain coefficient accordingly.Wherein, algorithm unit 130 passes through formula: F (decibel)=10*log (X
2/ (maximum decimal number)
2), if its maximum decimal number is 65536 when audio sample figure place is 16bit, and the decibels that expection regulates is 8 decibels, therefore can draw by above-mentioned formula the size of gain coefficient X.Then, algorithm unit 130 carries out gain process by gain coefficient to the sampled value of a plurality of sampled points, for example all sampled values all multiplied each other with gain coefficient and obtain the sampled value after gain is adjusted, make former volume value be promoted to target volume value, thereby make the volume value of the voice data of the pulse code modulation format after gain is adjusted reach target volume value (step S224).In addition, what deserves to be explained is, in above-mentioned steps, if the former volume value that institute's algorithm unit 130 calculates has reached target volume value, the gain coefficient that now calculated is 1, allow the sampled value of a plurality of sampled points of voice data of pulse code modulation format carry out after gain process, still maintain the former extreme value of adopting, make the voice data of pulse code modulation format maintain former volume value and enter follow-up handling procedure, and not to its adjustment that gains, to avoid, when the volume of rear end is exported, producing the excessive problem of volume.
Afterwards, by audio frequency, exporting codec (Codec) 140 is the coded audio data (step S225) after gain is adjusted by the audio data coding of the pulse code modulation format after gain adjustment; And the coded audio data after gain is adjusted exports the built-in loud speaker of TV 20 150 to or exports external power amplifier (AVR) 30 to by optical fiber and carrys out output sound (step S226).
Based on above-mentioned steps, allow TV after receiving the coded audio data of different-format, can be in the voice output of rear end, make the coded audio data of various forms there is identical or akin volume, that is to say, when the user interface by TV is adjusted volume, can produce the volume value of same levels, thereby the situation that while avoiding the coded audio data of different-format to play, volume differs occurs on TV.
Above-mentioned explanation has illustrated and has described some preferred embodiments of the application, but as previously mentioned, be to be understood that the application is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in invention contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the spirit and scope that the change that those skilled in the art carry out and variation do not depart from the application, all should be in the protection range of the application's claims.
Claims (5)
1. a television sound volume method of adjustment, is characterized in that, comprising:
Audio reception coded data; And
According to the form of described coded audio data, judge whether to adjust volume value;
If not, cancel the adjustment programme of described volume value;
If so, carry out volume adjustment programme, described volume adjustment programme comprises:
Described voice data is decoded as to the voice data of pulse code modulation format;
Obtain the sampled value of a plurality of sampled points of the voice data of described pulse code modulation format, and according to described sampled value, calculate the original sound volume value of the voice data of described pulse code modulation format;
According to target volume value and described original sound volume value gain coefficient;
By described gain coefficient, the sampled value of described a plurality of sampled points is carried out to gain process, obtain the voice data of the pulse code modulation format after gain is adjusted;
The coded audio data of the audio data coding of the pulse code modulation format after described gain is adjusted for gaining after adjusting; And
Export the coded audio data after described gain is adjusted.
2. television sound volume method of adjustment as claimed in claim 1, it is characterized in that, according to the form of described coded audio data, judging whether to adjust in the operation of volume, if the form of described coded audio data is Dolby Digital form or Digital Theater System form, carry out described volume adjustment programme.
3. television sound volume method of adjustment as claimed in claim 1, it is characterized in that, according to the form of described coded audio data, judging whether to adjust in the operation of volume, if the form of described coded audio data is Advanced Audio Coding form, directly exporting described coded audio data.
4. a television sound volume adjustment System, is characterized in that, comprising:
Processing unit, in order to audio reception coded data, and judges whether to adjust volume value according to the form of described coded audio data;
Audio decoder, is coupled to described processing unit, in order to receive described audio/video coding data, and described coded audio data is decoded as to the voice data of pulse code modulation format;
Algorithm unit, be coupled to described audio decoder, in order to calculate original sound volume value and the gain coefficient of the voice data of described pulse code modulation format, and by described gain coefficient, the sampled value of described a plurality of sampled points is carried out to gain process, to obtain the voice data of the pulse code modulation format after gain is adjusted; And
Audio frequency output codec, is coupled to described algorithm unit, in order to the coded audio data for gaining after adjusting by the audio data coding of the pulse code modulation format after described gain adjustment, and exports the coded audio data after described gain is adjusted.
5. television sound volume adjustment System as claimed in claim 4, is characterized in that,
The form of described coded audio data is Dolby Digital form, Digital Theater System form or Advanced Audio Coding form.
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| CN201310755711.5A CN103716568A (en) | 2013-12-27 | 2013-12-27 | Television volume adjustment method and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227998A (en) * | 2014-06-30 | 2016-01-06 | 惠州市伟乐科技股份有限公司 | The method and apparatus of balance Multi-audio-frequency volume |
| CN105592231A (en) * | 2016-02-25 | 2016-05-18 | 青岛海信电器股份有限公司 | Signal processing method, signal processing device, and signal processing equipment |
| CN106412689A (en) * | 2016-10-28 | 2017-02-15 | 北京数码视讯科技股份有限公司 | Audio volume adjusting method and apparatus |
| CN109889890A (en) * | 2019-03-15 | 2019-06-14 | 青岛海信电器股份有限公司 | The treating method and apparatus of audio data |
| CN105578272B (en) * | 2015-12-17 | 2019-06-18 | 青岛海信电器股份有限公司 | A kind of audio gain Automatic adjustment method and device |
| 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 |
| CN111813367A (en) * | 2020-07-22 | 2020-10-23 | 广州繁星互娱信息科技有限公司 | Method, device and equipment for adjusting volume and storage medium |
| CN111813367B (en) * | 2020-07-22 | 2024-07-12 | 广州繁星互娱信息科技有限公司 | Method, device, equipment and storage medium for adjusting volume |
-
2013
- 2013-12-27 CN CN201310755711.5A patent/CN103716568A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227998A (en) * | 2014-06-30 | 2016-01-06 | 惠州市伟乐科技股份有限公司 | The method and apparatus of balance Multi-audio-frequency volume |
| CN105578272B (en) * | 2015-12-17 | 2019-06-18 | 青岛海信电器股份有限公司 | A kind of audio gain Automatic adjustment method and device |
| CN105592231A (en) * | 2016-02-25 | 2016-05-18 | 青岛海信电器股份有限公司 | Signal processing method, signal processing device, and signal processing equipment |
| CN105592231B (en) * | 2016-02-25 | 2019-03-29 | 青岛海信电器股份有限公司 | A kind of processing method of signal, device and equipment |
| CN106412689A (en) * | 2016-10-28 | 2017-02-15 | 北京数码视讯科技股份有限公司 | Audio volume adjusting method and apparatus |
| CN109889890A (en) * | 2019-03-15 | 2019-06-14 | 青岛海信电器股份有限公司 | The treating method and apparatus of audio data |
| 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 |
| CN111813367A (en) * | 2020-07-22 | 2020-10-23 | 广州繁星互娱信息科技有限公司 | Method, device and equipment for adjusting volume and storage medium |
| CN111813367B (en) * | 2020-07-22 | 2024-07-12 | 广州繁星互娱信息科技有限公司 | Method, device, equipment and storage medium for adjusting volume |
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Application publication date: 20140409 |