A method for synchronous broadcasting of video and multi-channel audio
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: 2017-07-11
COMMUNICATION UNIVERSITY OF CHINA
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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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[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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The invention discloses a method for synchronous broadcasting of video and multi-channel audio, and the method is used in a DMS dynamic sound system. The present invention respectively extracts the audio time information identifier t at the playback end 1 and the video time information identifier t 2 , and identify the recovered audio time information t 1 and the video time information identifier t 2 Compare to obtain the audio-video synchronization control adjustment parameter Δt; transmit the audio-video synchronization control adjustment parameter Δt to the audio-video playout server, and the audio-video playback server adjusts the video frequency according to the audio-video synchronization control adjustment parameter Δt The playback progress of the content, to realize the synchronous playback of audio and video. The invention can realize synchronous broadcasting of video and multi-channel audio in the DMS dynamic sound system, and improves 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 ...
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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