TY - GEN
T1 - Variability in vowel formant frequencies of children with cerebral palsy
AU - Chen, Li Mei
AU - Lin, Yung Chieh
AU - Hsu, Wei Chen
AU - Liao, Fang Hsin
N1 - Publisher Copyright:
© ROCLING 2013.All rights reserved.
PY - 2013/10/1
Y1 - 2013/10/1
N2 - Cerebral palsy (CP) is a developmental motor disorder and the study of the speech characteristics and developmental speech patterns may provide valuable information on early speech development. Vowels appear early in speech development and they are central to the understanding of the acoustic properties of speech. Therefore, the current study aimed to examine the differences of vowel formant frequencies among five children with cerebral palsy in different severity ranging from ages 3 to 7. First and second vowel formants (F1 and F2) were measured to investigate: 1) the changes of the F1 and F2 values, 2) vowel space, and 3) the vowel space area in CP children of different ages and severity. The major findings are: 1) There was no obvious decline in F2 values from 3 to 7 years old, which indicated delayed speech development; 2) The overlapping ellipses of all vowel spaces illustrated unstable motor control in all the five children; and 3) The five CP children had centralized corner vowels and there was no expansion of vowel spaces at different ages. This indicated their limited motor control.
AB - Cerebral palsy (CP) is a developmental motor disorder and the study of the speech characteristics and developmental speech patterns may provide valuable information on early speech development. Vowels appear early in speech development and they are central to the understanding of the acoustic properties of speech. Therefore, the current study aimed to examine the differences of vowel formant frequencies among five children with cerebral palsy in different severity ranging from ages 3 to 7. First and second vowel formants (F1 and F2) were measured to investigate: 1) the changes of the F1 and F2 values, 2) vowel space, and 3) the vowel space area in CP children of different ages and severity. The major findings are: 1) There was no obvious decline in F2 values from 3 to 7 years old, which indicated delayed speech development; 2) The overlapping ellipses of all vowel spaces illustrated unstable motor control in all the five children; and 3) The five CP children had centralized corner vowels and there was no expansion of vowel spaces at different ages. This indicated their limited motor control.
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M3 - Conference contribution
AN - SCOPUS:85085600473
T3 - Proceedings of the 25th Conference on Computational Linguistics and Speech Processing, ROCLING 2013
SP - 260
EP - 267
BT - Proceedings of the 25th Conference on Computational Linguistics and Speech Processing, ROCLING 2013
PB - The Association for Computational Linguistics and Chinese Language Processing (ACLCLP)
T2 - 25th Conference on Computational Linguistics and Speech Processing, ROCLING 2013
Y2 - 4 October 2013 through 5 October 2013
ER -