Evidence of cue use and performance differences in deciphering dysarthric speech

There is substantial performance variability among listeners who transcribe degraded speech. Error patterns from 88 listeners who transcribed dysarthric speech were examined to identify differential use of syllabic strength cues for lexical segmentation. Transcripts from listeners were divided into...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 131; no. 2; p. EL112
Main Authors Choe, Yu-kyong, Liss, Julie M, Azuma, Tamiko, Mathy, Pamela
Format Journal Article
LanguageEnglish
Published United States 01.02.2012
Subjects
Adolescent
Adult
Auditory Perception - physiology
Cues
Dysarthria - psychology
Female
Humans
Male
Middle Aged
Observer Variation
Phonetics
Speech Intelligibility - physiology
Young Adult
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Summary:There is substantial performance variability among listeners who transcribe degraded speech. Error patterns from 88 listeners who transcribed dysarthric speech were examined to identify differential use of syllabic strength cues for lexical segmentation. Transcripts from listeners were divided into four groups (ranging from Better- to Poorer- performing). Phrases classified as Higher- and Lower-intelligibility were analyzed separately for each performance group to assess the independent variable of severity. Results revealed that all four listener groups used syllabic strength cues for lexical segmentation of Higher-intelligibility speech, but only the Poorer listeners persisted with this strategy for the Lower-intelligibility phrases. This finding and additional analyses suggest testable hypotheses to address the role of cue-use and performance patterns.
ISSN:1520-8524
DOI:10.1121/1.3674990