An Experimental Studies on Vowel Duration Differences before Consonant Clusters and unreleased stops of coda-position

영어 어말 자음군 구성에 따른 선행모음 길이 변화 및 어말 자음 비파열 현상에 대한 실험음성학적 연구 -무성 폐쇄음을 중심으로-

The aim of this paper is to investigate the effects of postvocalic consonant cluster (Contrasting nasal-stops consonant with stops) on vowel duration. In particular we focused on the rate of vowel duration in their words. (Experimental I ) and the tendency of unreleased voiceless stops at the end of the words.(Experimental II). The result of experimental I showed that the rate of vowel duration which is preceding single voiceless stops are significantly longer than those preceding nasal-stops counterparts and the percentage of English native speakers was longer than those of Korean leaners of English Experiment II indicated that the tendency of unreleased stop consonants occurred more frequently on single voiceless stops than nasal-stop clusters and Korean learners of English were more frequently produced the unreleased stops than English natives.