%0 Journal Article
%T A Multipoint Real-Time Speech Mixing and Scheduling Algorithm Based on Packet Networks<br>基于分组网络的多点实时语音混合及调度算法
%A YANG Shu tang
%A YU Sheng sheng
%A ZHOU Jing li
%A <br>杨树堂
%A 余胜生
%A 周敬利
%J 软件学报
%D 2001
%I 
%X Smooth and fluent speech communication is one of the main aims of current high performance video conferencing system. For this purpose, a multipoint real-time speech mixing and scheduling algorithm based on packet network is put forward and then realized. The scheduling algorithm, which contains several strategies, such as queue model analysis, synchronous control of multipoint speech streams, data pre fetching, timely refreshing buffers and so on, effectively guarantees continuity of the mixed speech in a limited complexity, and its mixing method has proved to proved to ensure naturalness and intelligibility of the mixed speech quality. The realization of this algorithm has led to a fact that the video conferencing system has better hearing perceptibility than those available oversea H.232 products, such as Netmeeting, based on the same H.323 specification.
%K packet network
%K multipoint communication
%K speech mixing
%K scheduling algorithm<br>分组网络
%K 多点通信
%K 语音混合
%K 调度算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=474510EB31BE72C8&yid=14E7EF987E4155E6&vid=59906B3B2830C2C5&iid=9CF7A0430CBB2DFD&sid=E645E14F118D0796&eid=8EA44A8F6C7F424F&journal_id=1000-9825&journal_name=软件学报&referenced_num=12&reference_num=9