2012 Fiscal Year Final Research Report
Development of Continuous Voice Morphing Using Separated Vocal TractArea Functions, Glottal Source Waves, and Prosodic Features
| Project/Area Number |
22500145
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Perception information processing/Intelligent robotics
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| Research Institution | University of Tsukuba |
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Principal Investigator |
TANAKA Kazuyo 筑波大学, 図書館情報メディア系, 教授 (70344207)
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| Co-Investigator(Kenkyū-buntansha) |
MIKAWA Masahiko 筑波大学, 図書館情報メディア系, 准教授 (40361357)
ITOH Yoshiaki 岩手県立大学, ソフトウエア情報学部, 准教授 (90325928)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 音声モーフィング / 声質変換合成 |
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| Research Abstract |
In this project, we have developed a flexible voice morphing method, which is based on a conversion using a linear combination of the vocal tract area functions estimated from speech signals and targeted on realization of the continuity of the phonological identity of the overall interpolated area. The main features of the method are,1) to separate characteristics of the vocal tract resonances from those of glottal source waves,2) independent morphing of the vocal tract resonances and glottal source wave characteristics, and 3) conversion method of prosodic features based on DCT(digital cosinetransform) domain. We have established that a morphing system constructed from the proposed method improves the continuity of the phonological identity and the speech quality in the intermediate morphing rate.
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