Affiliation:
1. Department of Communicative Disorders and Waisman Center, University of Wisconsin–Madison
Abstract
Purpose
This study examined the effect of alphabet supplementation (AS) on temporal and spectral features of speech production in individuals with cerebral palsy and dysarthria.
Method
Twelve speakers with dysarthria contributed speech samples using habitual speech and while using AS. One hundred twenty listeners orthographically transcribed speech samples. Differences between habitual and AS speech were examined for intelligibility, rate, word duration, vowel duration, pause duration, pause frequency, vowel space, and first and second formant frequency (F1 and F2) values for corner vowels.
Results
Descriptive results showed that intelligibility was higher, rate of speech was slower, and pause duration and pause frequency were greater for AS than for habitual speech. Inferential statistics showed that vowel duration, word duration, and vowel space increased significantly for AS. Vowel space did not differ for male and female speakers; however, there was an interaction between sex and speaking condition. Changes in vowel space were accomplished by reductions in F2 for /u/. Vowel space accounted for more variability in intelligibility than rate for AS; the opposite was true for habitual speech.
Conclusion
AS is associated with temporal and spectral changes in speech production. Spectral changes associated with corner vowels appear to be more important than temporal changes.
Publisher
American Speech Language Hearing Association
Subject
Speech and Hearing,Linguistics and Language,Language and Linguistics
Reference42 articles.
1. Effect of supplemental linguistic cues on the intelligibility of severely dysarthric speakers;Beliveau C.;Augmentative and Alternative Communication,1995
2. Speech and gesture share the same communication system;Bernardis P.;Neuropsychologia,2006
3. A Communication System for the Severely Dysarthric Speaker with an Intact Language System
4. The impact of speech supplementation and clear speech on the intelligibility and speaking rate of people with traumatic brain injury;Beukelman D. R.;Journal of Medical Speech-Language Pathology,2002
5. Mathematical treatment of context effects in pheneme and word recognition;Boothroyd A.;The Journal of the Acoustical Society of America,1988
Cited by
24 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献