安静的
听力学
噪音(视频)
可理解性(哲学)
听力损失
听力受损者
绝对听阈
声学
语音识别
计算机科学
医学
物理
人工智能
图像(数学)
哲学
认识论
量子力学
出处
期刊:Journal of Speech Language and Hearing Research
[American Speech-Language-Hearing Association]
日期:1986-06-01
卷期号:29 (2): 146-154
被引量:304
标识
DOI:10.1044/jshr.2902.146
摘要
This paper reviews the results of a series of investigations inspired by a model of the speech-reception threshold (SRT) of hearing-impaired listeners. The model contains two parameters accounting for the SRT of normal-hearing listeners (SRT in quiet and signal-to-noise ratio corresponding to the threshold at high noise levels), two parameters describing the hearing loss (attenuation and threshold elevation in terms of signal-to-noise ratio), and three parameters describing the hearing aid (acoustic gain, threshold elevation expressed in signal-to-noise ratio, and equivalent internal noise level). Experimental data are reported for three different types of hearing impairment: presbycusis, hearing losses with a pathological origin, and noise-induced losses. The model gives an excellent description of the data. It demonstrates that for many hearing-impaired persons speech intelligibility at noise levels beyond 50 to 60 dB(A) is their main problem, whereas hearing aids are most effective below that noise level.
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