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KMID : 1022420150070010067
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Phonetics and Speech Sciences
2015 Volume.7 No. 1 p.67 ~ p.77
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Comparison of Acoustic Characteristics of Vowel and Stops in 3, 4 year-old Normal Hearing Children According to Parents’ Deafness: Preliminary Study
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Hong Ji-Sook
Kang Young-Ae
Kim Jae-Ock
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Abstract
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The purpose of this study was to investigate how deaf parents influence the speech sounds of their normal-hearingchildren. Twenty four normal hearing children of deaf adults (CODA) and normal hearing parents (NORMAL) aged 3 to 4participated in the study. The F1, F2, and the vowel triangle area in 7 vowels and the voice onset times (VOTs) and closuredurations in 9 stops were measured. The results of the study are as follows. First, the F1 and F2 for all vowels were higherand the vowel triangle area was larger in CODA than in NORMAL although they were not statistically significant. Second,VOTs in CstopV for /t*/ and in VCstopV for /t*/, /th/, and /kh/ were longer in CODA than in NORMAL. Most stops in CODAappeared to be longer VOTs for most phonemes. Third, the manner and place of articulation in stops did not make adifference between CODA and NORMAL in VOTs and closed durations. CODA does not demonstrate the speechcharacteristics of deaf people, however, they seem to speak differently than NORMAL, which means CODA might beinfluenced by a different linguistic environment created by deaf parents in some way.
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KEYWORD
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children of deaf adult, CODA, vowel, formant, vowel triangle, stops, acoustic characteristics
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