| IP电话语音传输质量的研究 |
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| 引用本文： | 王志慧,司小江,王洪涛,陈显治.IP电话语音传输质量的研究[J].解放军理工大学学报,2001,2(1):26-31. |
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| 作者姓名： | 王志慧 司小江 王洪涛 陈显治 |
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| 作者单位： | 解放军理工大学通信工程学院!江苏南京210016 |
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| 摘 要： | 实现了Windows平台上的实时语音传输，在此平台上，通过大量的实验，对丢包前后的语音时域、频域波形做出了分析，并采用了MOS分和信噪比（SNR）来比较了3种语音恢复方法的优劣。最后详细分析了时延、抖动、丢包率和语音包的大小对语音质量的影响。
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| 关 键 词： | 语音质量 抖动 时延 丢包率 丢包恢复 波形编码 IP电话 语音传输 MOS分 |
| 文章编号： | 1009-3443(2001)01-0026-06 |
| 修稿时间： | 2000年4月24日 |
Research on the Quality of Phone |
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| WANG Zhi hui,SI Xiao jiang,WANG Hong tao and CHEN Xian zhi.Research on the Quality of Phone[J].Journal of PLA University of Science and Technology(Natural Science Edition),2001,2(1):26-31. |
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| Authors: | WANG Zhi hui SI Xiao jiang WANG Hong tao and CHEN Xian zhi |
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| Institution: | Institute of Communications Engineering, PLAUST, Nanjing 210016, China;Institute of Communications Engineering, PLAUST, Nanjing 210016, China;Institute of Communications Engineering, PLAUST, Nanjing 210016, China;Institute of Communications Engineering, PLAUST, Nanjing 210016, China |
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| Abstract: | This paper discusses how to transport real time voice on Windows. On the platform , the speech waveforms are analyzed in time field and frequency field through many experiments, and then 3 techniques for packet loss repair of speech using Mean Opinion Score(MOS) and signal to noise ratio(SNR) are coompared. Finally, the effects on speech caused by delay, jitter, loss rate and speech packet length are analyzed in detail. |
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| Keywords: | voice quality jitter delay loss rate packet-loss repair of speech removing jitter waveform coding parameter coding |
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