| Project/Area Number |
10680257
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
教科教育
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| Research Institution | Yokohama National University |
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Principal Investigator |
NAKAGAWA Tatsuo Yokohama National University, Faculty of Education and Human Sciences, Associate Professor, 教育人間科学部, 助教授 (00164137)
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| Co-Investigator(Kenkyū-buntansha) |
NAGAHARA Taro Yokohama City University, Faculty of Medicine, Lecturer, 医学部, 講師 (80237552)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1998: ¥1,000,000 (Direct Cost: ¥1,000,000)
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| Keywords | hearing aid / cochlear implant / evaluation / hearing-impaired child |
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| Research Abstract |
Objective Evaluation of Hearing aids : Audibility of Amplified Speech, How much can a hearing-impaired person hear amplified speech by wearing a hearing aid? From results of a speech discrimination test or a word identification test with a hearing aid, we can indirectly know his or her audibility of amplified speech. The purpose of this study is to quantify audibility of amplified speech for one heating-impaired person using a probe tube microphone. In the study we used a non-linear hearing aid. The results in which we measured level distribution and dynamic range of amplified speech are reported.
Subjective Evaluation of Hearing Aids : Self-assessment of hearing aids by the hearing impaired, A 24-item self-administered questionnaire that quantifies performance with a hearing aid in everyday life was developed. The profiles assess experience with amplification of speech in three different listening situations (noisy, reverberant, and quiet environments) and in terms of reactions to amplified environmental sounds. Satisfaction was also assessed using the questionnaire. The questionnaire was administered to 82 experienced hearing aid users. Results revealed that 6% of the subjects were satisfied with their hearing aids, 41% of the subjects were dissatisfied and the remaining 53% were intermediate. There were significant differences between the self-assessment performance scores of subjects with different degree of satisfaction. Significant differences were also observed between the self-assessment performance scores for different listening environments. In general, subjects reported significantly more success with their hearing aids in quiet situation and in listening to environmental sounds than in noisy and reverberant situations. Individual differences with respect to amplifications effects, relationship to hearing level, effectiveness and limitation of analog personal hearing aids are discussed in the text.
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