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Performance Analysis on the Effect of G.729, Speex and GSM Speech Codec on 802.11g Wireless Local Area Network over VoIP using Packet Jitter

机译:使用分组抖动的G.729,Speex和GSM语音编解码器对VoIP上802.11g无线局域网的影响的性能分析

摘要

In this paper, three speech codecs; G.729 (8 kbps), Speex (8kbps) and GSM (13kbps) were tested together with several predetermined SNR value ranging from 10dB to 45dB with a udsample of 8 second speech. VoIP QoS such as packet jitter is analyzed in order to make a comparison of speech quality of those three speech codecs in wireless LAN 802.11g udenvironment. Result shows that at lower SNR, GSM achieve higher packet jitter than that G.729 and Speex. At higher SNR, GSM achieves lower packet jitter as compared than that G.729 and Speex.
机译:本文介绍了三种语音编解码器。测试了G.729(8 kbps),Speex(8kbps)和GSM(13kbps)以及几个预定的SNR值,范围从10dB到45dB,采用8秒语音采样。分析了VoIP QoS(例如数据包抖动),以便在无线LAN 802.11g udenvironment中比较这三种语音编解码器的语音质量。结果表明,在较低的SNR情况下,GSM可获得比G.729和Speex更高的分组抖动。与G.729和Speex相比,在SNR高的情况下,GSM的分组抖动更低。

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