| Project/Area Number |
19560387
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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 |
Communication/Network engineering
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
NIYADA Katsuyuki Kyushu Institute of Technology, 大学院・工学研究院, 教授 (50363396)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUMACHI Mitsunori 九州工業大学, 工学研究院, 助教 (90380740)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 音声分析 / 高齢者音声 / 音声認識 / 音声データベース / 音声の表現語 / 音声の聴感的特徴 / 音響的特徴 / 音声インタフェース |
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| Research Abstract |
This research aims at investigating acoustic features of elderly speech for improving speech recognition rate of elderly speakers. Listening tests are carried out to know difference of subjective impressions between elderly and non-elderly speech. We summarized that elderly speech was characterized by three adjective phrases : hoarse voice, ill-articulated voice and slow utterance. Then a physical characteristic of elderly speech is investigated corresponding to each adjective phrase. As the result, acoustic characteristics of elderly speech are ; energy lift in higher frequency region in average power spectra, fluctuations in spectra during stationary parts of utterance, slow transition speed between adjacent phonemes, slow utterance speed and irregular utterance rhythm.
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