A correction method, correction device and audio-video terminal for audio time stamp

A correction method and technology of a correction device are applied in the field of wireless communication, which can solve problems such as inability to eliminate, and achieve the effect of eliminating transmission delay and improving the effect of audio and video synchronization.

Active Publication Date: 2021-07-20
SHENZHEN INPOR CLOUD COMPUTING CO LTD
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  • Abstract
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Problems solved by technology

[0003] However, the above method cannot eliminate the time delay caused by the complex audio information processing when the audio and video terminal collects audio information

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  • A correction method, correction device and audio-video terminal for audio time stamp
  • A correction method, correction device and audio-video terminal for audio time stamp
  • A correction method, correction device and audio-video terminal for audio time stamp

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the protection scope of the present invention. In addition, although the functional modules are divided in the schematic diagram of the device, and the logical order is shown in the flowchart, in some cases, the division ...

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Abstract

The invention relates to the technical field of wireless communication, in particular to an audio time stamp correction method, a correction device and an audio and video terminal. The audio time stamp correction method, correction device, and audio-video terminal provided in this embodiment obtain the first time stamp by acquiring the same audio signal sent by the working microphone and the auxiliary microphone. Then, according to the audio signal waveforms corresponding to the working microphone and the auxiliary microphone, determine the time difference, and then determine the first transmission delay based on the time difference. Finally, the first time stamp is corrected according to the first transmission delay. In the embodiment of the present invention, an auxiliary microphone is set on the audio and video terminal, and the transmission delay is calculated through the audio signal waveform obtained by the auxiliary microphone and the working microphone, and then the first time stamp is corrected based on the transmission delay, so as to eliminate the The transmission delay of audio can improve the synchronization effect of audio and video.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an audio time stamp correction method, a correction device and an audio and video terminal. Background technique [0002] The network transmission of audio and video is the process of packaging audio and video information and transmitting it to another terminal device through the network. In the prior art, due to the network delay in the transmission process, there is usually a phenomenon that the audio and video are not synchronized during playback. Usually, the audio information and video information are packaged with time stamps at the sending end, and the audio and video information is transmitted to the receiving end through the network. The timestamps are matched, thereby eliminating the delay caused by network delays, so that the audio and video can be played synchronously. [0003] However, the above method cannot eliminate the time delay caused by complex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/422H04N21/43H04N21/8547
CPCH04N21/42203H04N21/4305H04N21/8547
Inventor 张弦周华辉侯刚王素云
Owner SHENZHEN INPOR CLOUD COMPUTING CO LTD
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