Speech Sciences (음성과학)
- Volume 14 Issue 4
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- Pages.251-260
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- 2007
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- 1226-5276(pISSN)
Fundamental Frequencies of Normal Children's Voice in mutational Period
변성기 일반 아동 음성의 기본주파수 연구
Abstract
The structure changes of the vocal folds are related to the fundamental frequencies (F0). In other words, the increasing in vocal fold length and thickness makes the result of dropping in the F0 during the mutational period. The purpose of this study was to investigate F0 of normal children's voice in mutational period. 360 children (180 boys and 180 girls) were participated in this experiment. The age was ranged from 11 to 16 years. The subjects were asked to produce sustained comer vowels (/a/ /i/ /u/) five times each and the data were analyzed using the MDVP of CSL. The result shows that the F0 are considerably decreased with age and reach to adults' F0 by 16 years in most cases. In particular, the F0 of male subjects were rapidly decreased between the ages from 12 (