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KMID : 1035420180060040191
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Journal of The Korean Society of Integrative Medicine
2018 Volume.6 No. 4 p.191 ~ p.206
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The Correlation between Speech Intelligibility and Acoustic Measurements in children with Speech Sound Disorders
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Kang Eun-Yeong
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Abstract
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Purpose : This study investigated the correlation between speech intelligibility and acoustic measurements of speech sounds produced by the children with speech sound disorders and children without any diagnosed speech sound disorder.
Methods : A total of 60 children with and without speech sound disorders were the subjects of this study. Speech samples were obtained by having the subjects? speak meaningful words. Acoustic measurements were analyzed on a spectrogram using the Multi-speech 3700 program. Speech intelligibility was determined according to a listener's perceptual judgment.
Results : Children with speech sound disorders had significantly lower speech intelligibility than those without speech sound disorders. The intensity of the vowel /u/, the duration of the vowel /?/, and the second formant of the vowel /?/ were significantly different between both groups. There was no difference in voice onset time between the groups. There was a correlation between acoustic measurements and speech intelligibility.
Conclusion : The results of this study showed that the speech intelligibility of children with speech sound disorders was affected by intensity, word duration, and formant frequency. It is necessary to complement clinical setting results using acoustic measurements ??in addition to evaluation of speech intelligibility.
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KEYWORD
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Speech sound disorders, Speech intelligibility, Acoustic measurements
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