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Video and multichannel audio synchronous broadcasting method

An audio synchronization, audio and video synchronization technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as the limitation of the number of audio channels, and achieve the effect of improving user experience

Active Publication Date: 2014-10-01
COMMUNICATION UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional audio and video playback mode, audio and video content is processed in the same device, so the synchronization control of audio and video playback is also based on the same processor (local), but the number of audio channels is limited

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  • Video and multichannel audio synchronous broadcasting method
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  • Video and multichannel audio synchronous broadcasting method

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Embodiment Construction

[0029] Below, the present invention will be described in detail in conjunction with the accompanying drawings and specific embodiments.

[0030] The method for synchronous broadcasting of video and multi-channel audio provided by the present invention is used in DMS dynamic sound system, wherein, as figure 1 As shown, the DMS dynamic sound system includes an audio server, a video server and a DMS controller, and the audio server and the video server can also be combined into one server, that is, an audio and video server. For synchronous control of audio and video content, preferably, the server is a PC server. The audio and video content that needs to be played out synchronously has strict consistency in time, that is, the playout time of the video is equal to the corresponding audio playout time.

[0031] Such as Figure 6 As shown, the method for synchronous broadcasting of video and multi-channel audio provided by the present invention specifically includes the following...

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Abstract

The invention discloses a video and multichannel audio synchronous broadcasting method. The video and multichannel audio synchronous broadcasting method is used for a dynamic matrix system (DMS). The method comprises the steps of respectively extracting an audio time information identifier t1 and a video time information identifier t2 through a broadcasting side and comparing the recovered audio time information identifier t1 with the video time information identifier t2 to obtain an audio-video synchronous control adjustment parameter deltat; transmitting the audio-video synchronous control adjustment parameter deltat to an audio-video broadcasting server, wherein the audio-video broadcasting server adjusts the video content broadcasting speed according to the audio-video synchronous control adjustment parameter deltat and achieves audio-video synchronous broadcasting. The video and multichannel audio synchronous broadcasting method can achieve synchronous broadcasting of videos and multichannel audios in the DMS and improve user experience.

Description

technical field [0001] The invention relates to the technical fields of communication principles and digital signal processing, in particular to a method for synchronously playing video and multi-channel audio. Background technique [0002] The dynamic three-dimensional audio and video effect created by the DMS (Dynamic Matrix Sound) dynamic sound system is the latest breakthrough in the combination of three-dimensional video and multi-channel surround sound. In the traditional audio and video playback mode, the audio and video content is processed in the same device, so the synchronous control of audio and video playback is also based on the same processor (local), but the number of audio channels is limited. In terms of audio processing, the DMS dynamic sound system proposes a multi-channel sound field system based on limited audio sources, which breaks through the limitation of the number of audio channels. Therefore, video content can be played simultaneously with audio ...

Claims

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Application Information

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IPC IPC(8): H04N21/242H04N21/43H04N21/434
Inventor 马赛张勤胥文彬叶龙
Owner COMMUNICATION UNIVERSITY OF CHINA