Perceptual Evaluation of Speech Quality Measurement on Speex Codec VoIP with Tonal Language Thai
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Publication Details
Author list: Triyason T., Kanthamanon P.
Publisher: Springer Verlag (Germany): Computer Proceedings
Publication year: 2012
Volume number: 344
Start page: 181
End page: 190
Number of pages: 10
ISBN: 9783642350757
ISSN: 1865-0929
Languages: English-Great Britain (EN-GB)
Abstract
Nowadays, VoIP has become the core of communication over internet in daily life. While, most objective speech measurement researches are based on studies of Western languages. In linguistic way, tonal language is the language that uses tone to distinguish the meaning of the words and widely use in East Asia and South East Asia like Thai, Vietnam and Chinese. In this paper, we investigate the effect of tonal languages on VoIP speech quality with Speex codec. We encoded the speech samples from three different languages English, Thai and Chinese Mandarin with Speex codec and send through IP network with RTP session. Objective Listening Mean Opinion Score (MOS-LQO) which, measure from PESQ is used as an index of speech quality. The PESQ measurement shows average MOS patterns of three languages is not significantly different but Chinese show more fluctuated in standard deviation of each quality mode more than Thai and English. ฉ Springer-Verlag Berlin Heidelberg 2012.
Keywords
Speex, tonal language, VoIP speech quality
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