書誌事項
- タイトル別名
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- Effects of an Impact Noise on the Intelligibility of Speech through a Hearing Aid.
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The purpose of this investigation was to examine how speech intelligibility is affected by an impact noise for listeners wearing a hearing aid. In this experiment, the subjects consisted of 10 sensorineural hearing-impaired and five normal hearing listeners. Sentences mixed with a single impact noise or without noise were presented randomly to subjects wearing a hearing aid. The hearing aids used in this experiment were digital hearing aids (TD-1) which compress the signals in the time domain, and conventional analog hearing aids with peak clipping (PC) or automatic gain control (AGC). The results demonstrated that the intelligibility of sentences mixed with an impact noise decreased when the hearing-impaired subjects wore the analog hearing aid. Interestingly, the decline in intelligibility arose in the phrases not only after the impact noise, but also before the noise. On the other hand, there was none or only a slight decrease in intelligibility, regardless of the impact noise, in the normal hearing subjects and the hearing-impaired wearing TD-1. These results indicate that the compression method adopted by TD-1 is useful for patients with sensorineural hearing loss even under conditions with impact noises. We believe that incompletely suppressed impact noises mask the speech signal, and thus causes a decrease in the speech recognition of hearing-impaired subjects wearing analog hearing aids.
収録刊行物
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- 耳鼻咽喉科臨床
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耳鼻咽喉科臨床 92 (6), 601-606, 1999
耳鼻咽喉科臨床学会
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詳細情報 詳細情報について
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- CRID
- 1390001204261222400
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- NII論文ID
- 10005609022
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- NII書誌ID
- AN00107089
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- ISSN
- 18844545
- 00326313
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可