基于动态竞争的实时多媒体会议混音算法  

Real-time audio mixing algorithm based on dynamic competition used in multimedia conference

作　　者：王立炜[1] 廖延娜[2] 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121 [2]西安邮电大学理学院,陕西西安710121

出　　处：《西安邮电大学学报》2014年第5期51-55,共5页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省教育厅科学研究计划基金资助项目(12JK0559)

摘　　要：为了解决大规模会议中的混音噪声问题,提出语音短时累积能量的概念,并据此设计基于动态竞争模式的实时多媒体会议混音算法。该算法依据会议所有成员的语音短时累积能量,通过动态竞争、自我淘汰、强制淘汰三个过程,实时从会议所有成员中选择当前的发言者,并进行混音。仿真结果显示,该算法可解决大规模会议中混音质量与会议人数成反比的问题。In order to solve the problem of mixing noise in large scale multimedia conference,a concept of short-term cumulative energy of speech signal is put forward,and a real-time audio mixing algorithm based on dynamic competition is given in this paper.In this algorithm,three processes：dynamic competition,self-obsolescing and forcible obsolescing are gone through ac-cording to short-term cumulative energy of speech signal which come from each member of the conference.Current spokesmen are selected,and their speech signals are mixed as output.Simu-lation results show that this algorithm can solve the problem that the audio mixing quality has an inverse relationship with membership of large scale multimedia conference.

关 键 词：大规模多媒体会议 短时累积能量 动态竞争 混音 

分 类 号：TN912[电子电信—通信与信息系统]