The effects of syllable coda voicing on the onsets in English in English-learning Korean speakers
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초록
This study examines whether English learning Korean speakers reveal coarticulatory effects from coda voicing to onset consonants. In order to see whether L2 speakers reach native-like degree of coarticulation within the syllable, three acoustic features of /l/ were measured depending on the voicing of coda consonants. First, the result showed that F2 values of /l/ in onsets were not significantly different regardless of voicing of codas unlike the finding with L1 speakers (Hawkins and Nguyen 2003a, 2003b). Such result indicates that Korean L2 learners did not utilize anticipatory voicing coarticulation from coda to onset. Second, with respect to duration of /l/, interestingly, /l/ in onsets was longer before voiced (e.g. blead) than before voiceless codas (e.g. bleat) (91 ms vs. 86 ms). It suggests at least by some acoustic cues, Korean learners attempt to adopt the length of onsets to assist listeners to distinguish voiced from voiceless codas (Lindblom 1996). Lastly, interestingly, unlike native speakers of English, F0 of onset /l/ was lower before voiced than before voiceless codas. In sum, even L2 learners’ production partly supports Auditory Enhancement Theory by showing that longer and darker onset /l/ with lower F0 and longer vowels before voiced codas contribute to the perception of an abstract feature [voicing] in the whole syllable. This study implies that voicing can be partly viewed as a syllable feature rather than as a segmental feature with L2 learners.
Abstract
This study examines whether English learning Korean speakers reveal coarticulatory effects from coda voicing to onset consonants. In order to see whether L2 speakers reach native-like degree of coarticulation within the syllable, three acoustic features of /l/ were measured depending on the voicing of coda consonants. First, the result showed that F2 values of /l/ in onsets were not significantly different regardless of voicing of codas unlike the finding with L1 speakers (Hawkins and Nguyen 2003a, 2003b). Such result indicates that Korean L2 learners did not utilize anticipatory voicing coarticulation from coda to onset. Second, with respect to duration of /l/, interestingly, /l/ in onsets was longer before voiced (e.g. blead) than before voiceless codas (e.g. bleat) (91 ms vs. 86 ms). It suggests at least by some acoustic cues, Korean learners attempt to adopt the length of onsets to assist listeners to distinguish voiced from voiceless codas (Lindblom 1996). Lastly, interestingly, unlike native speakers of English, F0 of onset /l/ was lower before voiced than before voiceless codas. In sum, even L2 learners’ production partly supports Auditory Enhancement Theory by showing that longer and darker onset /l/ with lower F0 and longer vowels before voiced codas contribute to the perception of an abstract feature [voicing] in the whole syllable. This study implies that voicing can be partly viewed as a syllable feature rather than as a segmental feature with L2 learners.
참고문헌 (43)
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