Myanmar text-to-speech system with rule-based tone synthesis

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概要

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• We have introduced a novel Myanmar text to speech (MyanmarTTS) system with rule-based tone synthesis. Myanmar is a tonal language that possesses unique characteristics compared with other tonal languages such as Chinese, Vietnamese and Thai. Such languages have complicated fundamental-frequency (<I>F</I><SUB>0</SUB>) patterns of tones, and <I>F</I><SUB>0</SUB> is of foremost importance. Myanmar tones are unique in their simplistic pattern related not only to <I>F</I><SUB>0</SUB> but also, more specifically to duration. Myanmar tones have different durations between short-tone and long-tone groups. In accordance, we defined a tone rule employing two parameters <I>F</I><SUB>0</SUB> at the center of the syllable and the syllable’s duration. The rule is implemented with a linear <I>F</I><SUB>0</SUB> pattern. Large variability exists in the <I>F</I><SUB>0</SUB> and duration uttered by different speakers of different syllables. Hence, for tone synthesis, normalization of the <I>F</I><SUB>0</SUB> and duration is important and necessary to discriminate tones. We proposed a normalization method and the effectiveness of this method was confirmed in the distribution of the <I>F</I><SUB>0</SUB> and duration. The intelligibility of the synthesized tone was confirmed through listening tests with correct rates of 95.6% for male and 97.8% for female speech. As a result, we showed that the linear pattern is sufficient for Myanmar tone synthesis.

著者

• Takara Tomio

  Department Of Information Engineering University Of The Ryukyus

• Win Kyawt

  Department of Information Engineering, University of the Ryukyus

関連論文

• Vietnamese Text-To-Speech system with precise tone generation
• Perceptual characteristics of broken and drop tones in Vietnamese
• Myanmar text-to-speech system with rule-based tone synthesis

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