| 基于E-Model的VoIP语音质量研究 |
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| 引用本文： | 张泽明,胡磊,任久春,高传善.基于E-Model的VoIP语音质量研究[J].计算机工程,2009,35(4):278-280. |
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| 作者姓名： | 张泽明 胡磊 任久春 高传善 |
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| 作者单位： | 复旦大学信息科学与工程学院复旦-华夏信息技术联合实验室,上海,200433 |
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| 摘 要： | 针对目前网络电话语音质量难以准确评价及预测的情况，基于E-Model对VoIP的语音质量进行预测。分析几个主要影响因素，如延时、丢包等对话音质量的影响，构建VoIP语音质量预测模型，将E-Model中未考虑到的抖动因素引入模型公式，着重考虑抖动缓冲区的大小对语音质量的影响。通过设计相关验证实验，证明该模型对VoIP语音质量的预测具有较高的准确度。
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| 关 键 词： | 互联网协议语音技术 抖动缓冲 语音质量 |
| 修稿时间： | |
Research on Speech Quality of VoIP Based on E-Model |
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| ZHANG Ze-ming,HU Lei,REN Jiu-chun,GAO Chuan-shan.Research on Speech Quality of VoIP Based on E-Model[J].Computer Engineering,2009,35(4):278-280. |
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| Authors: | ZHANG Ze-ming HU Lei REN Jiu-chun GAO Chuan-shan |
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| Affiliation: | Fudan-Huaxia Joint Laboratory on Information Technology;School of Information Science and Engineering;Fudan University;Shanghai 200433 |
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| Abstract: | Aiming at the problem that how to evaluate and survey the speech quality of VoIP accurately,this paper evaluates the speech quality of VoIP based on E-Model,analyzes the impact of several major factors such as time delay,and packet loss.It constructs a model which includes the factor jitter that is not considered in E-Model and analyzes the impact of jitter buffer on speech quality.Results of the designed experiments show that the precision of the model evaluating the speech quality of VoIP is satisfied. |
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| Keywords: | Voice over Internet Protocol(VoIP) jitter buffer speech quality |
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