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KMID : 1036820130180040417
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Communication Sciences & Disorders
2013 Volume.18 No. 4 p.417 ~ p.424
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The Developmental Aspects of Phonetic Contrasts of Korean Word-Initial Stops in Young Korean Children
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Kim Min-Jung
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Abstract
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Objectives: A variety of studies on speech sound development have reported that children tend to develop speech sounds through the acquisition of phonetic contrasts. However, most of the studies conducted on the development of Korean speech sounds have been completed primarily through a transcription analysis. There are only a few studies that examined the phonetic development of Korean through an instrumental analysis. This study investigates the developmental aspects of phonetic contrasts of Korean stops that are characterized by a three-way contrast (i.e., fortis, aspirated, and lenis) in word-initial positions.
Methods: Data were collected from eight children, aged (year;month) 2;6 and 3;0, who exhibited no contrast, two-way contrast, or three-way contrast for three types of Korean stops. Three acoustic-phonetic parameters (i.e., voice onset time, fundamental frequency, and amplitude differences between the first and second harmonics of the poststop vowels) were measured.
Results: The acoustic analysis revealed the presence of covert contrast that was not evidenced by transcription data. The covert contrast was found in acoustic properties that are used to differentiate Korean stop consonants.
Conclusion: This study suggests that acoustic measures may provide additional information with regards to the development of Korean speech sounds.
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KEYWORD
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Korean stops, Phonetic contrast, Acoustic measures
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