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KMID : 1022420130050020053
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Phonetics and Speech Sciences
2013 Volume.5 No. 2 p.53 ~ p.58
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The Formant Frequency Differences of English Vowels as a Function of Stress and its Applications on Vowel Pronunciation Training
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Kim Ji-Eun
Yoon Kyu-Chul
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Abstract
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The purpose of this study is to compare the first two vowel formants of the stressed and unstressed English vowels produced by ten young males (in their twenties and thirties) and ten old males (in their forties or fifties) from the Buckeye Corpus of Conversational Speech. The results indicate that the stressed and unstressed vowels, /i/ and /?/ in particular, from the two groups are different in their formant frequencies. In addition, the vowel space of the unstressed vowels is somewhat smaller than that of the stressed vowels. Specifically, the range of the second formant of the unstressed vowels and that of the first formant of the unstressed front vowels were compressed. The findings from this study can be applied to the pronunciation training for the Korean learners of English vowels. We propose that teachers of English pay attention to the stress patterns of English vowels as well as their formant frequencies.
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KEYWORD
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English vowel formants, F1, F2, stress, Buckeye Corpus
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