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KMID : 1022420170090020031
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Phonetics and Speech Sciences
2017 Volume.9 No. 2 p.31 ~ p.38
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Examination of aspiration in Korean fricatives and affricates
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Lee Go-Un
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Abstract
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This study aims to examine the acoustic characteristics of Korean sibilant, especially aspiration in Korean fricatives (plain: /s/, fortis: /s’/) and affricates (aspirated: /ts?/, lenis: /ts/, and fortis: /ts’/). Duration values (closure duration, frication duration, aspiration duration), center of gravity (COG) (of the total duration, of the two portions, in 10 ms), H1-H2 values (at the vowel onset) were examined in order to investigate the phonetic feature of aspiration in frication noise. This study further discusses how to define criteria for identifying aspiration in sibilant sounds by adopting 3 visual criteria for assessing aspiration. This visually-designated aspiration onset points are further matched with the COG decline points in 10 ms windows. The result shows that all the non-fortis sounds (/s/, /ts?/, /ts/) contain aspiration, causing similar values of COG and H1-H2.
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KEYWORD
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aspiration, Korean fricatives, Korean affricates, acoustic features, onset of aspira
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