Journal ArticleDOI
Lognormal distribution of pause length in ataxic dysarthria.
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TLDR
The robustness of the lognormal distribution across pause types strongly supports this distribution as a viable and useful method of analysis and it is hoped this work will encourage others to consider the l Cognormal distribution.Abstract:
Previous investigations indicated that pauses in ataxic dysarthric speech are abnormal, but little is known about the nature of their variation or whether it can be characterized by a common distribution. The following types of pauses were measured in spontaneous monologues of 16 speakers with ataxic dysarthria: pauses that contained evidence of respiration, pauses that occurred between words, between phonemes, within phonemes, and those associated with stop consonants. Results showed that the duration of pauses not associated with stop consonants can be modeled with two distinct lognormal distributions. The lognormal distribution predicted duration across pause types within 1.67% standard error, with the exception of pauses that occurred within phonemes. Distributional parameters pointed to some fundamental similarities between pauses that occur within words. The robustness of the lognormal distribution across pause types strongly supports this distribution as a viable and useful method of analysis. We h...read more
Citations
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Journal ArticleDOI
Parametric Quantitative Acoustic Analysis of Conversation Produced by Speakers With Dysarthria and Healthy Speakers
TL;DR: Although speakers with HKD were effectively able to produce higher contrastivity levels in sentence repetition tasks, they habitually performed closer to the lower end of their production ranges.
Journal ArticleDOI
The diagnostic utility of patient-report and speech-language pathologists' ratings for detecting the early onset of bulbar symptoms due to ALS.
TL;DR: It is suggested that instrumentation-based measures of speech may be necessary for early detection of bulbar changes due to ALS.
Journal ArticleDOI
Automatic Method of Pause Measurement for Normal and Dysarthric Speech.
Kristin M. Rosen,Bruce E. Murdoch,Joanne E Folker,Adam P. Vogel,Louise M Cahill,Martin B. Delatycki,Louise A. Corben +6 more
TL;DR: It is concluded that distributional analysis of pause duration holds promise as a useful method of measuring the effects of Friedreich's Ataxia on functional speech.
Journal ArticleDOI
Analysis of speech segment duration with the lognormal distribution: A basis for unification and comparison
TL;DR: The results indicate that the duration of pauses, vowels and consonant classes can be effectively modeled with two parameters (geometric mean and geometric standard deviation), and linguistic and non-linguistic effects are proportionate to duration and combine multiplicatively.
Journal ArticleDOI
Longitudinal change in dysarthria associated with Friedreich ataxia: a potential clinical endpoint.
Kristin M. Rosen,Joanne E Folker,Adam P. Vogel,Louise A. Corben,Bruce E. Murdoch,Martin B. Delatycki +5 more
TL;DR: Whether there is measurable acoustical change in the dysarthria associated with Friedreich ataxia across yearly intervals is determined and results implicate longitudinal change in speaking rate and utterance duration.
References
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Journal ArticleDOI
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Linguistic uses of segmental duration in English: Acoustic and perceptual evidence
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TL;DR: In this study, segmental lengthening in the vicinity of prosodic boundaries is examined and found to be restricted to the rhyme of the syllable preceding the boundary.