2011 Fiscal Year Final Research Report
Study on the effects of acoustic interaction between the vocal tract and vocal fold on individuality of speech sounds
| Project/Area Number |
21500184
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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 | National Institute of Information and Communications Technology |
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Principal Investigator |
TAKEMOTO Hironori 独立行政法人情報通信研究機構, ユニバーサルコミュニケーション研究所多感覚評価研究室, 専攻研究員 (40374102)
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| Research Collaborator |
KITAMURA Tatsuya 甲南大学, 知能情報学部・知能情報学科, 教授 (60293594)
ADACHI Seiji Fraunhofer institute for building physics, Department of acoustics, Researcher (90305516)
MOKHTARI Parham ユニバーサルコミュニケーション研究所, 多感覚・評価研究室, 専攻研究員 (00395089)
TANABE Yosuke 株式会社日立製作所日立研究所, 機械研究センター, 研究者
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| Project Period (FY) |
2009 – 2011
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| Keywords | 音声生成 / 音源 / 下咽頭腔 / 音声の個人性 |
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| Research Abstract |
The hypopharyngeal cavities, which consist of the laryngeal cavity and bilateral piriform fossae, might act as a source of individuality of speech sounds. In this study, three-dimensional acoustic analyses of the hypopharyngeal cavities were first performed to clarify the mechanism by which they generate two deep dips on transfer functions of the vocal tract. Then a model of vocal fold vibration that considers acoustic interaction between the vocal tract and vocal fold was developed to examine how the hypopharyngeal cavities affect the glottal source. As a result, compared with their effects on the glottal source, the hypopharyngeal cavities provide transfer functions of the vocal tract with much more factors relating to individuality of speech sounds.
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Research Products
(13 results)
