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KMID : 1022420130050010047
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Phonetics and Speech Sciences
2013 Volume.5 No. 1 p.47 ~ p.54
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Consonant Confusions Matrices in Adults with Dysarthria Associated with Cerebral Palsy
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Lee Young-Mee
Sung Jee-Eun
Sim Hyun-Sub
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Abstract
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The aim of this study was to analyze consonant articulation errors produced by 90 speakers with cerebral palsy (CP). Phonetic transcriptions were made for 37 single-word utterances containing 70 phonemes: 48 initial consonants and 22 final consonants. Errors of substitution, omission, and distortion were analyzed using a confusion matrix paradigm showing the visualization of error patterns. Results showed that substitution errors in initial and final consonants were most frequent, followed by omission and distortion. Consonant omission occurred more frequently on final consonants. In both initial and final consonants, the within-place errors were more prominent than the within-manner errors. The current results suggest that consonant confusion matrices for dysarthric speech may provide useful information for evaluating speech intelligibility and developing automatic speech recognition system of adults with CP associated dysarthria.
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KEYWORD
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dysarthria, consonants errors, confusion matrix
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