EVALUATION OF HIGH-FIDELITY HEARING-AIDS
EVALUATION OF HIGH-FIDELITY HEARING-AIDS
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DOI：
10.1044/jshr.2501.15
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
TILLMAN, TW
中科院分区：
文献类型：
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作者：
KILLION, MC;TILLMAN, TW
任何高保真助听器的一个基本组成部分是一个放大器-换能器-耦合组合，它不会在听觉上降低声音，即，提供由具有正常听力的人判断的高保真声音再现。为了证明这种组合是可能的，使用现有的助听器换能器和电子元件组装了2对双耳助听器，1对具有8 kHz带宽的耳挂式助听器和1对具有16 kHz带宽的耳内式助听器。客观的插入增益测量这些艾滋病，获得与KEMAR人体模型在扩散声场，揭示了频率响应的准确性，可在昂贵的高保真扬声器。从3组听众判断预先录制的A-B-A比较（由KEMAR人体模型中的均衡鼓膜位置麦克风制成）获得的主观保真度评级得出了类似的结论。助听器研究应该更多地关注助听器设计应该为听力受损者做些什么，而不仅仅是它可以设计做什么。
An essential building block for any high-fidelity hearing aid is an amplifier-transducer-coupling combination that does not audibly degrade the sound, i.e., provides high-fidelity sound reproduction as judged by someone [human] with normal hearing. To demonstrate that such a combination is possible, 2 binaural pairs of hearing aids were assembled using available hearing aid transducers and electronic components, 1 pair of over-the-ear hearing aids with 8-kHz bandwidth and 1 pair of in-the-ear hearing aids with 16-kHz bandwidth. Objective insertion-gain measurements on these aids, obtained with a KEMAR manikin in a diffuse sound field, revealed a frequency-response accuracy comparable to that available in expensive high-fidelity loudspeakers. Subjective fidelity ratings obtained from 3 groups of listeners judging prerecorded A-B-A comparisons (made from equalized eardrum-position microphones in a KEMAR manikin) produced a similar conclusion. Hearing aid research should be more concerned with what a hearing-aid design should do for the hearing impaired than with merely what it could be designed to do.