심도 청각장애 성인의 발성 특성: 강도, 음도, 및 그 변동율을 중심으로
The Phonatory Characteristics of the Profound Hearing-Impaired Adults' Voice: with Reference to F0, Intensity, and their Perturbations
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Abstract
This study investigates the differences in mean F0, intensity, jitter and shimmer across hearing aid, gender and vowels. For this study, 20 hearing-impaired adults and 20 normal hearing adults as a control group were asked to read 7 Korean vowels(/ɑ, ʌ, o, u, ɯ, i, ɛ/). Subjects' readings were recorded by NasalView and analyzed by Praat. Results showed that the means of F0 were significantly higher in the hearing impaired group(HL) than in the normal hearing group(NH), in the female group than in male group, and in high vowels than in low vowels. Second, intensity was significantly higher in the normal hearing group(NH) than in the hearing impaired group(HL), in male group than in female group, and in low vowels than in high vowels. Third, jitter was significantly higher in the normal hearing group(NH) than in the hearing impaired group(HL), and in female group than in male group and in the back vowels than in front vowels. Finally, shimmer was significantly higher in the normal hearing group(NH) than in the hearing impaired group(HL), and in male group than in female group. In particular, the male group showed that front vowels tend to have higher shimmer than back vowels.
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