| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
Perceptual experiments indicated that speakers of different vowels could be correctly identified with accuracy of more than 80%. Analyzing speech signals uttered by 632 speakers, a new analysis method was proposed on the basis of the sinusoidal representation of speech signal. Further, cosine expansion of speech spectra and the quadratic combination of their coefficients were shown to be effective features for vowel perception. The result supports the hypothesis that perceptual features for vowel might be extracted by two-step synaptic combination in auditory periphery.
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