基于多媒体实时业务音频优先算法的研究  

Study on Audio Priority Algorithm Based on Real-time Multimedia Application

作　　者：缪亮[1] 夏保胜[2] 

机构地区：[1]开封教育学院计算机系,河南开封475001 [2]河南大学计算中心,河南开封475001

出　　处：《计算机工程与应用》2004年第20期42-43,57,共3页Computer Engineering and Applications

基　　金：国家自然科学基金资助(编号:70271050)

摘　　要：在多媒体实时业务中,保障声音质量是非常重要的因素。但是,目前的Internet网络本身并不对多媒体业务提供任何的QoS保证,加上网络和终端系统的复杂性,使得多媒体业务的音频优先控制成为一个非常重要的研究课题。文章通过对Pathload算法的分析改进提出了基于拥塞的音频优先算法。在实际的H.323系统中进行了实验分析,结果表明,所制定的音频优先算法很大程度地满足了音频优先的原则。Delivering real-time audio over the Internet is an important component of many Internet multimedia appli cations.However,the current Internet does not offer any Quality of Service(QoS)guarantees to multimedia transmission over the Internet.In addition,the heterogeneity of the networks and end systems make it difficult to achieve the require-ment of customers.This paper puts forward a new algorithm to provide audio priory by analyzing and improving a tradi-tional algorithm named'Pathload'.It also applies these policies in an environment of multi receivers and find they can provide better quality of video and give audio priority to great extent.

关 键 词：服务质量 实时业务 音频优先 动态调整 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]