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KMID : 0917520070140030007
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Journal of Speech Sciences
2007 Volume.14 No. 3 p.7 ~ p.19
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Closure Duration and Pitch as Phonetic Cues to Korean Stop Identity in AP Medial Position: Production Test
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Kang Hyun-Sook
Laura Dilley
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Abstract
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The present study investigated some phonetic attributes which distinguish two Korean stop types and in a prosodic position which has previously received little attention, namely medial in an accentual phrase. The intonational pattern across syllables which are initial in an accentual phrase (Jun, 1993) is said to depend on the type of stop (aspirated or lax), while that of syllables which are medial in an accentual phrase are not. In Experiment 1, nine native Korean speakers read sentences with a controlled prosodic pattern in which aspirated or lax stops occurred in accentual phrase-medial position. Acoustic analysis revealed significant differences between aspirated and lax stops in closure duration, voice-onset time, and fundamental frequency (F0) values for post-stop vowels. The results indicate that a wider range of acoustic cues distinguish aspirated and lax Korean stops than previously demonstrated. Phonetic and phonological models of consonant-tone interactions for Korean will need to be revised to account for these results.
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KEYWORD
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Korean aspirated and lax consonants, intonational pattern, medial in an accentual phrase
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