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Audio/video synchronization detection method and system, and voice detection method and system

An audio and video synchronization, audio and video technology, applied in the field of communication, can solve the problem of low audio and video accuracy, and achieve the effect of accurate audio and video synchronization detection results and accurate start and end points

Active Publication Date: 2013-04-03
CHINA MOBILE GROUP DESIGN INST
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Problems solved by technology

[0007] The embodiment of the present invention provides an audio-video synchronization detection method and its system to solve the problem of low accuracy of existing audio-video synchronization detection

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  • Audio/video synchronization detection method and system, and voice detection method and system
  • Audio/video synchronization detection method and system, and voice detection method and system
  • Audio/video synchronization detection method and system, and voice detection method and system

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Embodiment Construction

[0044] Aiming at the above-mentioned problems existing in the prior art, the embodiment of the present invention provides an audio-video synchronization detection method and its system, which uses pattern recognition to perform audio-video synchronization detection, that is, the audio-video synchronization detection is performed at the sending end and the receiving end respectively. The file and the reference data of the audio and video are pattern-recognized, and the starting playback time of the audio frame and video frame matching the audio reference data and video reference data are respectively recorded, and the audio and video playback time difference between the sending end and the receiving end is obtained, and then passed Comparing the audio and video playback time difference between the sending end and the receiving end to calculate the delay difference, so as to obtain the audio and video synchronization when the audio and video files are played at the receiving end. ...

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Abstract

The invention discloses an audio / video synchronization detection method, an audio / video synchronization detection system, a voice detection method and a voice detection system. The audio / video synchronization detection method comprises the following steps of: determining the staring play time of an audio band matched with audio reference data and the staring play time of a video frame matched with video reference data in an audio / video file played at a target terminal; according to the staring play time of the audio band matched with the audio reference data and the staring play time of the video frame matched with the video reference data, determining audio / video play time difference when the audio / video file is played at the target terminal; acquiring audio / video play time difference when the audio / video file is played at a source terminal; and according to audio / video play time difference when the audio / video file is played at the source terminal and at the target terminal, determining an audio / video synchronization condition when the audio / video file is played at the target terminal. By the invention, accuracy of audio / video synchronization detection can be improved.

Description

technical field [0001] The invention relates to audio and video detection technology in the communication field, in particular to an audio and video synchronous detection method and system thereof, and a voice detection method and system thereof. Background technique [0002] In the video service of mobile communication, since the audio and video do not carry time information during the encoding process, it becomes quite difficult to obtain the synchronization information of the audio and video. [0003] If time information is added to the audio and video encoded audio and video packets in advance, then when the encoded audio and video files arrive at the receiving end through network transmission, by analyzing the audio and video files received by the receiving end, The time information carried in the audio data packet and the video data packet is analyzed, and then the synchronization of the audio and video is judged according to the analyzed time information. [0004] Bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/434H04N21/8547G10L25/03G10L25/57G10L25/90
Inventor 陈欣伟方力沈亮高屹常静侯优优阮征
Owner CHINA MOBILE GROUP DESIGN INST
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