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Effects of severity of speech involvement on acoustic measures in diverse dysarthric types.
Yunjung Kim, Gary Weismer, Ray D. Kent

Since the DAB (1969) study, a combination of perceptual characteristics and acoustic measures have described different subtypes of dysarthric speech. This work points out the necessity to investigate commonalities and variabilities among various dysarthrias in the dimension of severity of speech involvement. This paper will report results of several acoustic measures for dysarthric speakers with various etiologies and severities of speech involvement, to test the underlying hypothesis that the basic aspects of acoustic features might change as a function of severity, rather than by dysarthria type itself. If the measures are primarily tied to severity, they should not vary much within homogeneous intelligibility groups.

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