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Patterns of speech abnormality in a ...

Kim, Yunjung.

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Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type./
作者:	Kim, Yunjung.
面頁冊數:	187 p.
附註:	Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5181.
Contained By:	Dissertation Abstracts International68-08B.
標題:	Health Sciences, Speech Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3278914
ISBN:	9780549199236

Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type.
Kim, Yunjung.

Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type. - 187 p.

Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5181.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2007.

Although previous research seems to have developed two main axes of acoustic study of dysarthria---speech severity and subtypes of dysarthria---the potential interaction between these two factors has not been considered in much depth. This study examined the effect of speech severity on classification of different types of dysarthria.

ISBN: 9780549199236Subjects--Topical Terms:

1018105
Health Sciences, Speech Pathology.

Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type.
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245 1 0 $a Patterns of speech abnormality in a large dysarthria database: Interactions between severity, acoustic features, and dysarthria type.
300 $a 187 p.
500 $a Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5181.
500 $a Advisers: Raymond D. Kent; Gary Weismer.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2007.
520 $a Although previous research seems to have developed two main axes of acoustic study of dysarthria---speech severity and subtypes of dysarthria---the potential interaction between these two factors has not been considered in much depth. This study examined the effect of speech severity on classification of different types of dysarthria.
520 $a One hundred three speakers with dysarthria due to Parkinson's disease (PD), cerebral vascular attack (CVA), traumatic brain injury (TBI), and multiple system atrophy (MSA) participated in this study. Ten age-matched speakers served as a control group. The tasks for speakers included word repetition and sentence recitation. Recoded sentence samples were used in order to obtain speech intelligibility scores using a direct magnitude estimate (DME) technique.
520 $a Acoustic analysis included eight segmental/suprasegmental features that have been suggested in the previous literature as either predicting speech severity or characterizing specific type of dysarthria; articulation rate, voiceless interval duration, first moment analysis for fricatives, vowel space, f0 range, intensity range, and pairwise variability index (PVI).
520 $a The results showed that speech severity affected the acoustic characteristics of dysarthria in a way that (1) diverse types of dysarthria revealed not only uniqueness, but also a considerable degree of commonality (t-test analysis), (2) acoustic predictors of speech intelligibility slightly differed across different types of dysarthria, depending on acoustic features of the specific type dysarthria (regression analysis), and (3) the distribution of acoustic features was explained by speech severity as much as types of dysarthria (classification analysis). Particularly, the classification analysis showed that a greater portion of subjects were identically classified with their original group when subjects were coded by severity (54.9%) than by type of dysarthria (31.7%).
520 $a This study also suggested the importance of appropriate speech stimuli for dysarthria studies based on the finding of (1) the different sensitivity of speakers with dysarthria to several speech stimuli, and (2) the different sensitivity of specific type of dysarthria to certain acoustic measures.
590 $a School code: 0262.
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710 2 $a The University of Wisconsin - Madison. $3 626640
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790 1 0 $a Kent, Raymond D., $e advisor
790 1 0 $a Weismer, Gary, $e advisor
790 $a 0262
791 $a Ph.D.
792 $a 2007
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