CN102281039B - Automatic adjusting method for volume of video-audio play list - Google Patents
Automatic adjusting method for volume of video-audio play list Download PDFInfo
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- CN102281039B CN102281039B CN201010200392.8A CN201010200392A CN102281039B CN 102281039 B CN102281039 B CN 102281039B CN 201010200392 A CN201010200392 A CN 201010200392A CN 102281039 B CN102281039 B CN 102281039B
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Abstract
The invention discloses an automatic adjusting method for the volume of a video-audio play list. The automatic adjusting method comprises the following steps of: (1) respectively calculating specified audio amplitudes of all video-audio files in a video-audio database; (2) obtaining the specified audio amplitudes of all video-audio files in certain video-audio play list; and (3) adjusting the volume of video and audio played subsequently according to the volume and the specified audio amplitude of certain specified video-audio. According to the automatic adjusting method for the volume of the video-audio play list, the volume of the video-audio play list is automatically adjusted by calculating the audio amplitudes, thereby enabling a user to enjoy in both audio and visual feeling.
Description
Technical field
The present invention relates to volume adjusting method, particularly a kind ofly calculated the method automatically regulating video and audio playlist volume by audio amplitude.
Background technology
Along with the development of audio-video network, video-audio program is the gesture of magnanimity growth, when the video-audio program of user on viewing video and audio website, has two kinds of modes: (1) a kind of mode solely watches or listen to certain video-audio program; (2) another kind of mode watches or listen to some video-audio program in bulk.These are watched or are listened in some video-audio program in bulk, because the audio amplitude of each video-audio program is different, therefore in actual play process, there will be the situation that the volume of each video-audio program of Continuous Play is different, bring on hearing experience to user uncomfortable.
Such as: a playlist comprises: A, B, the audio amplitude of C tri-video and audio file A is very little, the audio amplitude of B and C is very large, user is at broadcasting A, B, when C tri-files, can by the volume adjusting of player on S, for video and audio file A, volume S on this player sounds very comfortable, but when player is played to next video and audio file B automatically time, volume on player remains S, this time, player plays video and audio file B will be that volume becomes very high, therefore need automatically to regulate player in the volume playing video and audio file B.
Be in the invention of 200710075911 at application number, propose a kind of output volume automatic regulation method of media player, but what this invention proposed is be arranged in same value by the volume of player, and the video and audio playlist volume automatic regulating system that we propose, be the audio amplitude according to video and audio, specify different output volumes to player.Therefore its principle has the difference of essence.
In view of this, those skilled in the art, for the problems referred to above, provide a kind of video and audio playlist volume automatic regulating method.
Summary of the invention
The invention provides a kind of video and audio playlist volume automatic regulating method, overcome the difficulty of prior art, calculate to be reached through audio amplitude the object automatically regulating video and audio playlist volume.
The present invention adopts following technical scheme:
The invention provides a kind of video and audio playlist volume automatic regulating method, comprise the following steps:
(1) the appointment audio amplitude of all video and audio files in video/audio storehouse is calculated respectively;
(2) the appointment audio amplitude of all video and audio files in certain video and audio playlist is obtained;
(3) according to volume and the appointment audio amplitude of some video and audios of specifying, the volume of the video and audio of follow-up play is regulated.
Preferably, in described step (1), described video/audio storehouse comprises the set of video file or audio file.
Preferably, in described step (1), described appointment audio amplitude is within certain time period, the maximum of the amplitude set of representative voice height in the audio signal of video and audio.
Preferably, in described step (1), calculate described appointment audio amplitude and comprise the steps:
(11) the amplitude set of the audio signal of front N second of certain video and audio file is calculated;
(12) maximum of the amplitude set obtained is as the appointment audio amplitude of this video and audio.
Preferably, in described step (2), described video and audio playlist refers to the orderly set of the video and audio file being used to Continuous Play.
Preferably, in described step (3), if specify the volume of certain video and audio file as reference volume sj, the appointment audio amplitude of its correspondence is aj, and other volume regulates automatically according to this reference volume and appointment audio amplitude;
Adjustment formula is as follows: volume set when establishing si to be broadcasting i-th video and audio file, and the appointment audio amplitude of its correspondence is ai, then si=sj/aj*ai.
Preferably, in described step (3), also comprise:
When the volume that user specifies certain video and audio to play, the volume that the described video and audio of specifying using user is play is as reference volume;
When the volume that user does not specify certain video and audio to play, then with the volume of first of video and audio playlist played video and audio file for reference volume.
Owing to have employed above-mentioned technology, compared with prior art, tool of the present invention has the following advantages:
Video and audio playlist volume automatic regulating method of the present invention is calculated by audio amplitude and automatically regulates video and audio playlist volume, can bring the enjoyment on hearing experience to user.
The present invention is further illustrated below in conjunction with drawings and Examples.
Accompanying drawing explanation
Fig. 1 is the flow chart of video and audio playlist volume automatic regulating method of the present invention;
Fig. 2 is the player automatic regulating volume schematic diagram in embodiment;
Fig. 3 is the flow chart of the video and audio playlist volume automatic regulating method in embodiment.
Embodiment
Specific embodiments of the invention are introduced below by Fig. 1 to 3.
As shown in the figures 1 and 2, the invention provides a kind of video and audio playlist volume automatic regulating method, comprise the following steps:
(1) the appointment audio amplitude of all video and audio files in video/audio storehouse is calculated respectively;
(2) the appointment audio amplitude of all video and audio files in certain video and audio playlist is obtained;
(3) according to volume and the appointment audio amplitude of some video and audios of specifying, the volume of the video and audio of follow-up play is regulated.
In described step (1), described video/audio storehouse comprises the set of video file or audio file, and described appointment audio amplitude is within certain time period, the maximum of the amplitude set of representative voice height in the audio signal of video and audio.
Calculate described appointment audio amplitude to comprise the steps:
(11) the amplitude set of the audio signal of front N second of certain video and audio file is calculated;
(12) maximum of the amplitude set obtained is as the appointment audio amplitude of this video and audio.
In described step (2), described video and audio playlist refers to the orderly set of the video and audio file being used to Continuous Play.
In described step (3), if specify the volume of certain video and audio file as reference volume sj, the appointment audio amplitude of its correspondence is aj, and other volume regulates automatically according to this reference volume and appointment audio amplitude;
Adjustment formula is as follows: volume set when establishing si to be broadcasting i-th video and audio file, and the appointment audio amplitude of its correspondence is ai, then si=sj/aj*ai.
When the volume that user specifies certain video and audio to play, the volume that the described video and audio of specifying using user is play is as reference volume;
When the volume that user does not specify certain video and audio to play, then with the volume of first of video and audio playlist played video and audio file for reference volume.
As shown in figures 2 and 3, the embodiment of video and audio playlist volume automatic regulating method of the present invention is as follows:
1) the amplitude set of the audio signal of front N second of all video and audio files in video/audio storehouse is calculated;
2) using the maximum of amplitude set that obtains " appointment audio amplitude " as corresponding video and audio;
3) user plays certain video and audio playlist;
4) volume of certain video and audio file is designated as reference volume sj, and the appointment audio amplitude of its correspondence is aj;
Other volume regulates automatically according to this reference volume and appointment audio amplitude, regulates formula as follows:
Volume set when if si is broadcasting i-th video and audio file, the appointment audio amplitude of its correspondence is ai, then
si＝sj/aj*ai；
5) other volume regulates automatically according to this reference volume and appointment audio amplitude.
In summary, video and audio playlist volume automatic regulating method of the present invention is calculated by audio amplitude and automatically regulates video and audio playlist volume, can bring the enjoyment on hearing experience to user.
Above-described embodiment is only for illustration of technological thought of the present invention and feature, its object is to enable those skilled in the art understand content of the present invention and implement according to this, only can not limit the scope of the claims of the present invention with the present embodiment, namely all equal changes of doing according to disclosed spirit or modification, still drop in the scope of the claims of the present invention.
Claims (2)
1. a video and audio playlist volume automatic regulating method, is characterized in that: comprise the following steps:
(1) the appointment audio amplitude of all video and audio files in video/audio storehouse is calculated respectively; Described video/audio storehouse comprises the set of video file or audio file; Described appointment audio amplitude is within certain time period, the maximum of the amplitude set of representative voice height in the audio signal of video and audio;
Calculate described appointment audio amplitude to comprise the steps:
(11) the amplitude set of the audio signal of front N second of certain video and audio file is calculated;
(12) maximum of the amplitude set obtained is as the appointment audio amplitude of this video and audio;
(2) the appointment audio amplitude of all video and audio files in certain video and audio playlist is obtained; Described video and audio playlist refers to the orderly set of the video and audio file being used to Continuous Play;
(3) according to volume and the appointment audio amplitude of some video and audios of specifying, the volume of the video and audio of follow-up play is regulated; If specify the volume of certain video and audio file as reference volume sj, the appointment audio amplitude of its correspondence is aj, and other volume regulates automatically according to this reference volume and appointment audio amplitude;
Adjustment formula is as follows: volume set when establishing si to be broadcasting i-th video and audio file, and the appointment audio amplitude of its correspondence is ai, then si=sj/aj*ai.
2. video and audio playlist volume automatic regulating method as claimed in claim 1, is characterized in that: in described step (3), also comprise:
When the volume that user specifies certain video and audio to play, the volume that the described video and audio of specifying using user is play is as reference volume;
When the volume that user does not specify certain video and audio to play, then with the volume of first of video and audio playlist played video and audio file for reference volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200392.8A CN102281039B (en) | 2010-06-12 | 2010-06-12 | Automatic adjusting method for volume of video-audio play list |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200392.8A CN102281039B (en) | 2010-06-12 | 2010-06-12 | Automatic adjusting method for volume of video-audio play list |
Publications (2)
| Publication Number | Publication Date |
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| CN102281039A CN102281039A (en) | 2011-12-14 |
| CN102281039B true CN102281039B (en) | 2015-05-20 |
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| CN201010200392.8A Expired - Fee Related CN102281039B (en) | 2010-06-12 | 2010-06-12 | Automatic adjusting method for volume of video-audio play list |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110010154B (en) * | 2019-03-26 | 2021-04-09 | 北京雷石天地电子技术有限公司 | Volume balancing method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468389C (en) * | 2005-06-24 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Play list generation system and method |
| CN1929298B (en) * | 2005-09-07 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Audio frequency processing system and method |
| CN101267189A (en) * | 2008-04-16 | 2008-09-17 | 深圳华为通信技术有限公司 | Automatic volume adjusting device, method and mobile terminal |
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Effective date of registration: 20200518 Address after: 310052 room 508, floor 5, building 4, No. 699, Wangshang Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Alibaba (China) Co.,Ltd. Address before: 200003 Shanghai Xuhui District Xietu Road No. 1238 Building No. 6, X2 Creative Park Patentee before: SHANGHAI TUDOU NETWORK TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20150520 Termination date: 20210612 |