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.
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Triyason, T., Kanthamanon, P. (2012). Perceptual Evaluation of Speech Quality Measurement on Speex Codec VoIP with Tonal Language Thai. In: Papasratorn, B., Charoenkitkarn, N., Lavangnananda, K., Chutimaskul, W., Vanijja, V. (eds) Advances in Information Technology. IAIT 2012. Communications in Computer and Information Science, vol 344. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35076-4_17
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DOI: https://doi.org/10.1007/978-3-642-35076-4_17
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