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KMID : 1022420090010040171
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Phonetics and Speech Sciences
2009 Volume.1 No. 4 p.171 ~ p.176
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The Effects of Speaking Mode on Intelligibility of Dysarthric Speech
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Kim Soo-Jin
Ko Hyun-Ju
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Abstract
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Intelligibility measurement is one criterion for the assessment of the severity of speech disorders especially of dysarthric persons. Rate control, usually rate reduction, is used with many dysarthric speakers to improve their intelligibility. The purpose of this study is to compare how change intelligibility of speech produced by cerebral palsic speakers according to three speaking conditions. Speech samples were collected from 10 adults with cerebral palsy were asked to speak under three speaking conditions-(1) naturally(control), (2) more slowly(rate control), (3) louder and accurately(clear speech). In a perception test, after listening to the speech samples, a group of three judges were to write down whatever they heard. The result showed that total cerebral palsic subjects were divided into two subgroups according to their intelligibility according to three speaking conditions. Some subjects showed that speech intelligibility increased greatly if asked to speak ’louder and more accurately’. and the others showed no difference of intelligibility according to the speaking conditions. This study suggested that it would be useful clinically to find out the best instruction to improve intelligibility suitable for each speaker with cerebral palsy.
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KEYWORD
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speech intelligibility, dysarthric speaker, cerebral palsy, rate control, clear speech
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