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KMID : 0917519970010010201
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Journal of Speech Sciences
1997 Volume.1 No. 1 p.201 ~ p.211
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The Percetion of Vowels Synthesized in Vowel Space by F1 and F2: A Study on the Differences between Vowel Perception of Seoul and Kyungnam Dialectal Speakers
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Choi Yang-Gyu
Shin Hyun-Jung
Kwon On-Seek
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Abstract
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Acoustically a naturally-spoken vowel is composed of five formants. However, the acoustic quality of a vowel is known to be mostly determined by F_1 and F_2. The main purpose of this study was to examine how synthesized vowels with F_1 and F_2 are perceived by Korean native speakers. In addion, we
are interested in finding whether the synthesized vowels are perceived differently by standard Korean speakers and Kyungnam regional dialect speakers. In the experiment 9 Seoul standard Korean speakers and 9 Kyungnam dialect speakers heard 536 vowels synthesized in vowel space with F_1 by F_2 and categorized them into one of 10 Korean vowels. The resultant vowel map showed that each Korean vowel occupies an unique area in the two-dimensional vowel space of F_1 by F_2, and confirmed that F_1 and F_2 play important roles in the perception of vowels. The results also showed that the Seoul speakers and the Kyungnam speakers perceive the synthesized vowels differently. For example, /e/ versus /ε/ contrast, /y/, and /Ø/ are perceived differently by the Seoul speakers, whereas they were perceptually confused by the Kyungnam speakers. These results might be due to the different vowel systems of the standard Korean and the Kyungnam regional dialect. While the latter uses a six-vowel system which has no /e/ vs /ε/ contrast, /??/ vs /??/ contrast, /ｙ/, and /Ø/, the former recognizes these as different vowels. This result suggests that the vowel system of differing dialect restricts the perception of the Korean vowels. Unexpectedly /??/ does not occupy and area in the vowel apace. This result suggests that /??/ cannot be synthesized without F_3.
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