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KMID : 0917520060130020133
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Journal of Speech Sciences
2006 Volume.13 No. 2 p.133 ~ p.145
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A Perceptual Study on the Temporal Cues of English Intervocalic Plosives for Various Groups Depending on Background Language, English Listening Ability, and Age
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Kang Seok-Han
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Abstract
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In order to understand the various groups’ perceptual pattern in both VCV trochee and iambus, this study examined the identification correctness and cue robustness for the unit intervals in light of background language, age, and English listening ability. The 4 groups of Native Speakers of English, Korean College Students of High Listening Achievement, Korean College Students of Low Listening Achievement, and Korean Elementary Students took part in the experiments. Tokens of in trochee and of in iambus were extracted and modified into experimental signals composed of two digits(voiced-1, voiceless-0) by following the temporal intervals, in which the signals consisted of preceding vowel, closure, VOT, and post-vowel. In the first experiment of identification correctness in VCV iambus environment, all groups showed almost 100% correctness rate, while in trochee environment all groups were different(native speaker 87%, college high 74%, college low 70%, elementary 65%). In the second experiment of cue robustness, all groups showed the similar perceptual pattern in both environments. There was the order of robustness cues in VCV trochee: pre-vowel closure VOT post-vowel, while the order in VCV iambus: VOT post-vowel closure pre-vowel. In some condition, however, we found moderately different perceptual pattern depending on language, age and listening level.
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KEYWORD
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stops, perception, VOT, age difference, second language acquisition
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