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Articulation characteristics of a severely hearing-impaired speaker and trial therapy using electropalatography Miho Uchiyama 1 , Harue Nakamura 1 , Yuri Fujiwara 2 , Chieko Kojima 2 , Kenichi Hasegawa 3 1Department of Rehabilitation, Kofu-Jonan Hospital 2Department of Speech Therapy, School of Rehabilitation Sciences, Seirei Christopher University 3Speech-Pathology and Hearing Course, Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University Keyword: 聴覚障害 , 構音運動分析 , EPG , 単音節明瞭度 , 視覚的フィードバック訓練 , hearing impairment , articulation disorder , monosyllable perception intelligibility , electropalatography , visual feedback training pp.109-117
Published Date 2013/7/15
DOI https://doi.org/10.11477/mf.6001100366

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 In order to analyze articulation characteristics of a severely hearing-impaired speaker, perception intelligibility of her speech was rated by normal hearing listeners on monosyllables, words, and sentences. Articulatory tongue movement was analyzed using electropalatography (EPG) and sound spectrography. Results suggested that the tendency of confusion matrix is related to errors or immaturity of articulation such as the following:(i) forward shift of place of articulation on palatalized sounds, (ii) less tongue palate contact groove and weak/short frication on fricatives and affricates, and (iii) prolongation of VOT on voiced plosives.

 Articulation training with visual feedback was carried out using EPG and perception intelligibility of monosyllables improved from 48.4% to 57.7%. However, there were no significant changes in the tendency of confusion matrix. Training with EPG was effective in stimulating groove formation on fricatives and differentiating places of articulation. Further study is required to search for other methods of feedback and training for generalization to conversational speech.


Copyright © 2013, Japanese Association of Speech-Language-Hearing Therapists. All rights reserved.

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電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会

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