| Project/Area Number |
11680306
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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 |
Japanese language education
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| Research Institution | Tohoku University |
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Principal Investigator |
SUKEGAWA Yasuhiko Tohoku University, International Student Center, Associate Professor, 留学生センター, 助教授 (70241560)
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| Co-Investigator(Kenkyū-buntansha) |
OGAWARA Yoshiro The National Institute for Japanese Language, Researcher, 研究員 (70302065)
MAEKAWA Kikuo The National Institute for Japanese Language, Senior Researcher, 主任研究官 (20173693)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | speech style / speech production / long vowel / shortening / categorical perception / 発話スタイル / モーラ / 音節 / 発話速度 / 語中位置 / 音節構造 / 軽音節 / 重音節 |
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| Research Abstract |
It is well known that Japanese long vowels are difficult for learners of Japanese as a second language, Expressions like "double-length", "two beats" or the like are found in Japanese textbooks. In actual speech, however, length of some long vowels is shortened and they sound like short vowels. In this resarch, we describe preliminary research of the long-vowel-shortening phenomena which was carried out using three different research methods.
First, we analyzed acoustically recordings of native speakers reading sentences written on cards and found that long-vowel-shortening did not occur. Then we analyzed a recording of spontaneous conversation and found out that long-vowel-shortening was more likely to occur at non-word-initial positions than at word-initial-positions. Lastly we prepared synthesized sentences in which vowel length was controlled in ten stages and carried out a categorical perception test. The results indicated that native speakers of Japanese have less keen sense of vowel shortening at non-word-initial positions than at word-initial positions.
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