西安邮电大学学报
西安郵電大學學報
서안유전대학학보
Journal of Xi'an University of Posts and Telecommunications
2014年
5期
51-55
,共5页
大规模多媒体会议%短时累积能量%动态竞争%混音
大規模多媒體會議%短時纍積能量%動態競爭%混音
대규모다매체회의%단시루적능량%동태경쟁%혼음
Large-scale multimedia conference%short-term cumulative energy%dynamic competi-tion%audio mixing
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。
為瞭解決大規模會議中的混音譟聲問題，提齣語音短時纍積能量的概唸，併據此設計基于動態競爭模式的實時多媒體會議混音算法。該算法依據會議所有成員的語音短時纍積能量，通過動態競爭、自我淘汰、彊製淘汰三箇過程，實時從會議所有成員中選擇噹前的髮言者，併進行混音。倣真結果顯示，該算法可解決大規模會議中混音質量與會議人數成反比的問題。
위료해결대규모회의중적혼음조성문제，제출어음단시루적능량적개념，병거차설계기우동태경쟁모식적실시다매체회의혼음산법。해산법의거회의소유성원적어음단시루적능량，통과동태경쟁、자아도태、강제도태삼개과정，실시종회의소유성원중선택당전적발언자，병진행혼음。방진결과현시，해산법가해결대규모회의중혼음질량여회의인수성반비적문제。
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.
