An Experimental Studies on Vowel Duration Differences before Voiced and Voiceless Consonants pronounced by Korean Learners of English - From Fricatives and Affricates sounds -

한국인 영어학습자의 영어 어말자음 유/무성에 따른 모음길이 변화현상에 대한 실험음성학적 연구 - 마찰음, 폐찰음 중심으로 한 발성실험을 통하여 -

The aim of this paper is to investigate the effects of postvocalic voicing(Contrasting voiceless fricative and affricate with voiced fricative and affricate) on vowel duration. In particular we focused on the durational differences between vowels followed by voiceless and voiced consonants across three groups of speakers: English speakers, English bilinguals and Korean learners of English. the result of experimental I showed that durations of vowels preceding voiced fricative and affricates as well as voiced stops are significantly longer than those preceding voiceless counterparts. Experiment Ⅱ indicated that as the subjects exposed themselves longer to English speaking society, their pronunciation was increasingly similar to those of English native speakers.