%0 Journal Article
%T Perceived Speech Quality Estimation Model for VoIP-based Networks<br>一种VoIP语音质量评价模型
%A HU Zhi guo
%A ZHANG Da-lu
%A ZHANG Jun-sheng
%A <br>胡治国
%A 张大陆
%A 张俊生
%J 计算机科学
%D 2011
%I 
%X In VoIP system, the performance of network transmission makes a fundamental impact on quality of experience. However, the traditional research based QoS can not be directly reflected to be Quality of Experience. We combined ITU PESQ and E-model algorithm and made a comprehensive analysis of the impact on user experience which was caused by packet loss, end-to-end delay, fitter, voice coding, and so on. Our contributions are thus twofold: firstly, we offered a detailed analysis of the impact of these parameters and their interactions on the perceived conversational quality.Secondly,we adopt regression model for singlccnded(nonintrusive) method for objective speech quality estimation according to different conditions. The experimental results show that the objective assessments are correlated well with objective assessments ones,which indicates that the method proposed here is effective.
%K QoS
%K Quality of experience
%K Objective assessment of speech cauality
%K Regression model<br>服务质量，体验质量，语音质量客观评价，回归模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=08B7DF3BC485CF244BA7D07E6F8E83AD&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=94C357A881DFC066&sid=2A3781E88AB1776F&eid=8E6AB9C3EBAAE921&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=26