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Method for eliminating video echo and computer storage medium

A technology of echo cancellation and video, which is applied to color TV parts, TV system parts, TVs, etc. It can solve the problem of increasing the download package size of video applications and achieve the effect of eliminating video echo

Active Publication Date: 2021-08-13
BEIJING YIZHEN XUESI EDUCATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will greatly increase the size of the download package of the video application program of the terminal device

Method used

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  • Method for eliminating video echo and computer storage medium
  • Method for eliminating video echo and computer storage medium
  • Method for eliminating video echo and computer storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 2 , shows a flow chart of the steps of the video echo elimination method according to Embodiment 1 of the present invention.

[0021] Specifically, the video echo elimination method provided by the embodiment of the present invention is applied to a system player for video playback of a terminal device, and includes the following steps:

[0022] In step S101, the audio track object of the video file to be played in the system player is obtained.

[0023] In this embodiment, the system player may be understood as a native player of the operating system of the terminal device for playing video. For example, when the operating system of the terminal device is an iOS system, the system player may be an AVPlayer player. The audio track can be understood as a track defining audio properties, for example, audio timbre, timbre library, number of channels, input / output ports, volume, and so on. The audio track object can be understood as a code object formed ...

Embodiment 2

[0047] An embodiment of the present invention also provides a computer storage medium, the computer storage medium stores a readable program, the readable program is applied to a system player for video playback of a terminal device, and the readable program includes: An instruction for obtaining the audio track object of the video file to be played in the system player; for performing a mixing operation on the audio track associated with the audio track object of the video file to obtain the corresponding audio track of the video file Instructions for audio playback data; for determining audio reference data for video echo cancellation processing of the video file according to the audio playback data corresponding to the audio track of the video file; for using the audio reference data and performing video echo cancellation processing on the audio collection data obtained by the audio collection device in the terminal device, so as to eliminate the instruction of the audio pla...

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PUM

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Abstract

Embodiments of the present invention provide a video echo elimination method and a computer storage medium, which are applied to a system player for video playback of a terminal device. Wherein, the method includes: acquiring the audio track object of the video file to be played in the system player; performing a sound mixing operation on the audio track associated with the audio track object of the video file to obtain the audio track object of the video file Audio playback data corresponding to the track; according to the audio playback data corresponding to the audio track of the video file, determine the audio reference data used for the video echo cancellation processing of the video file; use the audio reference data, to the terminal device The audio collection data obtained by the audio collection device is subjected to video echo cancellation processing, so as to eliminate the audio playback data in the audio collection data. Through the embodiment of the present invention, the video echo can be easily eliminated without affecting the size of the download package of the video application program.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of audio processing, and in particular, to a video echo cancellation method and a computer storage medium. Background technique [0002] In the online education scenario, the lecturer often uses video as a teaching demonstration in the courseware. When the video is played, the lecturer will explain the content related to the video. If the lecturer uses the system player of the terminal device to play the video directly, and the lecturer does not wear headphones, the microphone of the terminal device will collect the lecturer's explanation and the sound of the video played by the speaker of the terminal device, and will collect the collected sound signal Carry out encoded transmission and send to the terminal equipment held by the students. In this way, the students can hear two voices, one is the voice of the video played by the lecturer, and the other is the voice of explanation accom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/265G10L21/0208
CPCG10L21/0208G10L2021/02082H04N5/265
Inventor 谢炜航
Owner BEIJING YIZHEN XUESI EDUCATION TECH CO LTD