| Presentation | 1999/7/8 Developmwnt of Phonetic Categories : A test with degraded speech Yasuko HAYASI, Kaoru SEKIYAMA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Two syllables /ba/ and /da/, spoken by a Japanese woman, were presented for the discrimination test in order to investigate the development of phonetic categories. Forty participants, who were three, seven, eleven, and twenty years old, listened to both clear and lowpass filtered speech in random order. Although all the age groups were highly accurate when the stimuli were clear, but three-year-old children showed great difficulty in discriminating lowpass filtered speech and heard both /ba/ and /da/ as "ba" (Experiment I). To examine if the unintelligibility of speech in general causes such a difficulty in three-year-old children, we tested another eight three-year-old children and compared with 28 university students, with clear speech, lowpass filtered speech, and speech with white noise (Experiment II). Three-year-old children could not distinguish lowpass filtered /ba/ and /da/, but they could to some extent when stimuli were speech with white noise. These results indicate that the three-year-old children are much sensitive to a qualitative change produced by lowpass filter. This finding was discussed in terms of the perceptual magnet effect. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | phonetic category / speech perception / development / intelligibility |
| Paper # | SP99-44 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 1999/7/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Developmwnt of Phonetic Categories : A test with degraded speech |
| Sub Title (in English) | |
| Keyword(1) | phonetic category |
| Keyword(2) | speech perception |
| Keyword(3) | development |
| Keyword(4) | intelligibility |
| 1st Author's Name | Yasuko HAYASI |
| 1st Author's Affiliation | Kanazawa University() |
| 2nd Author's Name | Kaoru SEKIYAMA |
| 2nd Author's Affiliation | Kanazawa University |
| Date | 1999/7/8 |
| Paper # | SP99-44 |
| Volume (vol) | vol.99 |
| Number (no) | 165 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |