Moore B C, Laurence R F, Wright D
Br J Audiol. 1985 Aug;19(3):175-87. doi: 10.3109/03005368509078972.
Eight subjects suffering from bilateral sensorineural hearing losses with recruitment were fitted binaurally with two-channel compression hearing aids, worn behind the ear. After they had worn the aids for some time, measures of speech intelligibility were compared for two conditions: listening unaided, and listening aided. the dynamic range for speech, defined as the difference in level between the speech reception threshold in quiet and the highest comfortable level for speech, was substantially increased in the aided condition for seven of the eight subjects (the exception was a subject with almost normal low-frequency hearing). Speech reception thresholds were also measured in two levels of background noise ('babble'), 60 and 75 dB SPL. Seven of the eight subjects showed a reduced speech reception threshold (i.e. an improvement) in the aided condition for at least one of the two noise levels, although the size of the improvement differed considerably from one subject to another. The subjects were also given a battery of psycho-acoustical tests in an attempt to better characterise their hearing loss, and to gain more insight into individual differences. Results of measurements of frequency selectivity, frequency discrimination, temporal acuity and temporal masking are described and related to the measures of speech intelligibility.
八名患有双侧感音神经性听力损失并伴有重振现象的受试者双耳佩戴了耳背式双通道压缩助听器。在他们佩戴助听器一段时间后，比较了两种情况下的言语清晰度测量结果： unaided聆听和佩戴助听器聆听。言语的动态范围定义为安静环境下言语接受阈值与言语最高舒适水平之间的电平差，在佩戴助听器的情况下，八名受试者中有七名（例外是一名低频听力几乎正常的受试者）该动态范围大幅增加。还在两种背景噪声水平（“嘈杂声”），即60和75 dB SPL下测量了言语接受阈值。八名受试者中有七名在佩戴助听器的情况下，对于两种噪声水平中的至少一种，言语接受阈值降低了（即有所改善），尽管改善的程度在不同受试者之间差异很大。受试者还接受了一系列心理声学测试，以更好地描述他们的听力损失，并更深入了解个体差异。描述了频率选择性、频率辨别、时间敏锐度和时间掩蔽的测量结果，并将其与言语清晰度测量结果相关联。
