Analysis of Phonetic Confusion of Modified Japanese Monosyllables in Patients with Sensorineural Hearing Loss.

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  • Kato Yumiko
    Department of Otolaryngology, Osaka University School of Medicine
  • Hayashi Haruhiro
    Department of Otolaryngology, Osaka University School of Medicine
  • Matsunaga Tohru
    Department of Otolaryngology, Osaka University School of Medicine
  • Ohyama Ghen
    Department of Otolaryngology, Tokushima University School of Medicine

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Other Title
  • 感音難聴における日本語加工単音節に対する異聴の分析

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Description

We investigated phonetic confusion in patients with a sensorineural hearing loss (SNHL) to normal subjects using some modified Japanese monosyllables: /ki/, /sa/, /te/, /ha/ and /ri/. The percentage of correct answers were calculated in each group and each stimulus. In all groups, the percentage of correct answers, derived from the stimuli whose consonant and voice onset time (VOT) were amplified, showed a higher value than those of the original monosyllables. In contrast, the percentage of correct answers to the prolonged modification of stimuli showed lower value than those of the original monosyllables. Especially with /te/ and /ri/, the correct answer ratio deteriorated when the stimuli with prolonged process was used. We applied the factor analysis method to further analysis of the data. As for /ki/ and /sa/, some of the extracted factors were estimated as the factors in common between both groups; impaired and normal hearing. When the presented sound was classified by phonetic characters, there was no specific tendency.<br>These results suggest that (1) the vowel following the consonant masks the consonant, (2) the perception of a monosyllable is possible only when enough information is taken in a certain duration, (3) the processing of sound based on the phonetic classification is not effective for improving the perception of patients with SNHL.

Journal

  • AUDIOLOGY JAPAN

    AUDIOLOGY JAPAN 34 (6), 779-785, 1991

    Japan Audiological Society

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