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KMID : 1022420180100040067
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Phonetics and Speech Sciences
2018 Volume.10 No. 4 p.67 ~ p.76
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Acoustic characteristics of the sustained vowel phonation according to age groups
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Seo Yoon-Jeong
Shin Ji-Young
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Abstract
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This study was performed to investigate acoustic characteristics of sustained vowels produced by Seoul Korean speakers. For this study, three hundred nine healthy adults were chosen as participants from Korean Standard Speech Database. These subjects were divided into five chronological age groups (20s, 30s, 40s, 50s, 60?70s) and two gender groups (male and female). Fundamental frequency (f0), jitter, shimmer, and NHR (noise-to-harmonics ratio) was measured with 8 Korean vowels (/?/, /æ/, /?/, /e/, /o/, /u/, /?/, /i/) by using Praat. The results showed that the vowel type significantly affected all acoustic parameters. Gender affected f0, jitter, and NHR significantly. The mean female speakers’ f0 was greater than the males’, and the mean jitter and NHR of male speakers was greater than the females’. Moreover, age affected shimmer and NHR significantly; in particular, the shimmer and NHR of elderly speakers was greater than the young speakers.
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KEYWORD
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fundamental frequency (f0), jitter, shimmer, NHR (noise-to-harmonics ratio), voice quality
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