多方电话会议系统中混音溢出问题的一种改进算法  

An Improved Algorithm for Overflow of Audio Mixing in Multi-Party Video Conferencing System

作　　者：张微[1] 毛敏[1] 

机构地区：[1]华东师范大学电子系,上海200062

出　　处：《电子器件》2007年第1期294-296,共3页Chinese Journal of Electron Devices

摘　　要：音频模块在电话会议系统中起着举足轻重的作用,怎样解决混音后带来的溢出问题又是音频模块中的核心.针对这一问题介绍了一种新型的混音算法,该算法依据音频数据的变化来相应的调整衰减因子,很好的解决了混音中因为溢出而带来的噪声,而且变化也更加平滑.实验结果表明,该算法在溢出相当严重的情况下也能有较高的混音质量.Audio frequency module is very important in the video conferencing system, how to solve the problem of overflow after mixing is the kernel of the audio frequency module. This paper introduces a new audio mixing algorithm. This algorithm adjusts the attenuation gene based on the variety of audio data, restrains the noise and the transformation becomes more smoothness. The result shows that this algorithm can ensure upper quality even if the overflow is very grievous.

关 键 词：电话会议 混音算法 衰减因子 溢出 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]