| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
For the case of single use of a bone conducted microphone, fundamental frequency detection with bone conducted speech was investigated, and a detection method was derived, which provides a good performance even in highly noisy environments. Amplitude of bone conducted speech was investigated in the time domain, and it was found that a transform of amplitude of bone conducted speech into that of air conducted speech leads to an improvement of speech quality. For teh case of multiple use of bone conducted microphones, a multi-input single-output system was constructed involving adaptive filters. Algorithms to provide the best improvement of speech quality were investigated.
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