• The Journal of the Acoustical Society of Korea
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• v.22 no.8
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• pp.694-702
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• 2003

The word intelligibility test for dysarthric speakers was designed to examine phonetic contrasts that are likely (1) to be sensitive to intelligibility impairment and (2) to contribute significantly to speech intelligibility. These phonetically contrasting word pairs were tested and proved to be reliable and to be valid, The results showed that in Korean dysarthric patients, the percentage of error in final position contrast was higher than in any other position. Unlike the results of previous studies, the initial-position contrasts were crucial in predicting the overall intelligibility among Korean patients.

• Proceedings of the KSPS conference
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• 2002.11a
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• pp.141-144
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• 2002

The relations between words intelligibility and sentences intelligibility were tested on adults with cerebral palsy(athetoid type). Intelligibility is used as an important evaluation value in the field of diagnosis and therapy of dysarthric patients. In order to develop one syllable phonetic contrast intelligibility test using specific phonetic contrasts, the correlation with sentences intelligibility was tested to find out the validity. Pearson's simple correlation coefficient was .83 that shows a high correlation. Also, comparing the range and standard deviation given by seven evaluators on each subject, it was shown that when evaluating patients of moderate intelligibility, words intelligibility was more reliable than sentences intelligibility.

• MALSORI
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• no.56
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• pp.1-13
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• 2005

This study examined the speech intelligibility of one-syllable words with phonetic contrasts and analyzed segmental factors that can predict the overall speech intelligibility in hearing-impaired adults. To identify the speech error characteristics, a Korean word list was audio-recorded by 7 hearing-impaired adults, and 35 listeners selected the heard word out of 5 choices. Based in part on previous studies of speech of the hearing impaired, the word list consisted of monosyllabic consonant-vowel-consonant (CVC) real word pairs. Stimulus words included 77 phonetic contrast pairs. The results showed that the percentage of errors in final position (coda) contrast was higher than in any other position in syllable. And the intelligibility deficit factors of phonetic contrast in the hearing-impaired were analyzed through stepwise regression analysis. The overall intelligibility was predicted by the error rate of manner contrast at coda, voicing contrast (homorganic triplets) at onset and high-low contrast at nucleus.

• Proceedings of the KSPS conference
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• 2003.10a
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• pp.121-124
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• 2003

The purpose of this study was to show the characteristics of phonetic contrasts of one-syllable words and speech intelligibility in hearing-impaired adults. Seven subjects with hearing-impaired participated in this experiment(2 males, 5 females). The test materials are 77 pairs of one-syllable words with phonetic contrasts. The results of this study were as follows: (1) The average score of intelligibility(scored accuracy) was the highest in contrasts of onset feature. (2) The scored percentages of error(except for combinations of contrasts) were the highest in articulatory manner contrasts of onset, tongue height contrasts of nucleus, and articulatory place contrasts of coda, respectively.