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http://dx.doi.org/10.13064/KSSS.2014.6.4.017

Phonetic investigation of epenthetic vowels produced by Korean learners of English  

Shin, Dong-Jin (Center for Spoken Language Research (CSLR) Hankuk University of Foreign Studies)
Iverson, Paul (SHaPs, University College London)
Publication Information
Phonetics and Speech Sciences / v.6, no.4, 2014 , pp. 17-26 More about this Journal
Abstract
The present study examined epenthetic vowels produced by Korean learners of English in read sentences, in terms of acoustic measures and extra-phonological factors. The results demonstrated three main findings. First, epenthetic vowels had relatively high F1 values and a wide range of F2 values. Most of the epenthetic vowels were inserted near Korean high central vowels, but some vowels were inserted near front vowels due to co-articulation with surrounding vowels. Second, vowel epenthesis was affected by the context. The results showed that the epenthesis was frequently seen with word junctions between obstruents (e.g., stops-fricatives). Third, Korean learners were not affected by English background and were very weakly affected by orthography. English experience, which is one of the extra-phonological factors, was not related to epenthesis production. However, orthography, the other extra-phonological factor, very weakly affected the amount of epenthesis production. Nine percent of all epenthesis production was affected by the English past-tense suffix '-ed'; approximately 70% of the participants were affected by this suffix. The findings of the present study contributed to understanding vowel epenthesis. First, the study revealed that the epenthetic vowels produced by Korean learners of English were close to the high central vowel, supporting previous studies that the epenthetic vowel is quite close to the shortest vowel. Second, the study examined the various phonetic environments of epenthetic vowels, revealing that vowel epenthesis occurred more frequently in a certain phonetic circumstance.
Keywords
epenthetic vowel; epenthesis environment; extra-phonological factors; English experience; orthographical effects;
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