一种无线局域网语音质量评价方法  

An Evaluation Method of Speech Quality in Wireless LAN

作　　者：刘远丰[1] 杜明辉[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2008年第5期58-64,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(05006593)

摘　　要：为了更真实地反应无线局域网的语音质量,分析了网络语音质量的评价方法,根据网络语音的影响因素和网络仿真的特点,提出了改进的评价模型,并使用原始语音数据进行网络仿真评价,最后结合不同的播放算法得到了不同客观条件下无线局域网语音质量的平均意见得分.分析结果表明:播放算法在网络条件无法确保最优的情况下,对语音质量的影响很大.In order to more accurately evaluate the speech quality in wireless LAN,the existing evaluating methods are analyzed,and an improved evaluation model is then proposed by considering the factors influencing the quality and the features of network simulation.Moreover,the real speech data are transmitted and evaluated via a simulation module.Finally,the mean opinion scores of speech quality in wireless LAN in different conditions are obtained with different playout algorithms.Analytical results show that the playout algorithms greatly affect the speech quality when the network conditions become worse.

关 键 词：无线局域网 语音质量 评价 播放算法 

分 类 号：TN91[电子电信—通信与信息系统]