| Project/Area Number |
24650137
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Cognitive science
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| Research Institution | Tohoku Institute of Technology |
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Principal Investigator |
ITO Masashi 東北工業大学, 工学部, 准教授 (00436164)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 音声 / 認知科学 / 話者 / 音声知覚 / 話者認識 / フォルマント / 知覚 |
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| Research Abstract |
In the present study, perceptual mechanism for speaker identity was investigated using formant-suppressed vowel stimuli. At first, Japanese vowels were acoustically analyzed which uttered by 300 adult male and female speakers. The results indicated that whole-spectral characteristics had more information than well-known formant frequencies. Based on the analysis, formant-suppressed vowel stimuli were synthesized. Using the stimuli, perceptual experiments were carried out. In the experiments, three vowels (ABX) were successively presented to listeners. The listeners were required to answer vowel A or B, which was uttered by the same speaker for vowel X. The results indicated that both fundamental and formant frequencies to be effective cues for speaker identity perception. However, the results also showed crucial listener dependencies. Thus, it was difficult to generalize perceptual mechanism for speaker identity.
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