摘要
在视频会议中,音频处理是基本的也是实时性要求最高的要素,而音频混音是音频处理中不可或缺的部分,也是音频处理中的一个难点。目前大部分视频会议系统都没有很好地解决这个难题,而且很多混音的研究工作都偏重于混音算法,而忽视了混音方案的研究。针对这个问题提出了集中式和分布式2种混音方案,并介绍混音中的一些关键技术,最后提供了一种按贡献加权算法来消除混音溢出问题。实验证明这种算法能有效地解决混音溢出问题。
In video conference,audio processing is basic and requires the highest real -time criterion, and audio mixing is an important function of audio processing,it＇s also a difficulty which is unsolved satisfactorily in many video conference systems presently,moreover,much stress is laid on audio mixing and audio mixing scheme is neglected illogically. According to this problem,two audio mixing schemes and some crucial technology in audio mixing are presented in this paper. In the end,a contributing - weighted algorithm is given to solve the overflow of audio mixing, the rationality of this algorithm is tested by the experiments,
出处
《现代电子技术》
2006年第20期85-87,90,共4页
Modern Electronics Technique
关键词
视频会议
混音
MCU
加权算法
video conference
audio mixing
MCU
weighted algorithm
