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KMID : 0384020020130010045
Journal of the Korean Society of Logopedics and Phoniatrics
2002 Volume.13 No. 1 p.45 ~ p.51
The Effects of Vowel Type on the Nasalance score in Normal Condition and in Simulated VPI Condition




Abstract
The purpose of this study is to examine the effects of vowel type on the nasalance score. Twenty one male adults without VPI produced 5 types of vowels (/a/, /e/, /i/, /o/, /u/) in two conditions-normal and simulated VPI condition. Nasalance scores were measured for each vowel. These data were compared between conditions and among vowel types. The results were as follow : For all vowels, nasalance scores were significantly higher in simulated VPI condition than in normal condition. The two conditions yielded different patterns in terms of the degree of nasalance across the 5 vowels. In normal condition, nasalance scores were higher in front vowels than in medial or back vowels. But in simulated VPI condition, nasalance scores were higher in high vowels than in mid or low vowels.
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