2009 Fiscal Year Final Research Report
Research on speech recognition interface for elderly people based on acoustic feature extraction of elderly speech
| 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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| Keywords | 音声分析 / 高齢者音声 / 音声認識 / 音声データベース |
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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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