Wilson R H, Civitello B A, Margolis R H
Audiology. 1985;24(1):15-24. doi: 10.3109/00206098509070093.
This study was undertaken to determine the effect of interaural level differences on the magnitude of the speech recognition masking level differences obtained from younger and older subjects with normal hearing and from subjects with asymmetrical sensorineural hearing losses. A ten-word subgroup of CID W-1 spondaic words having the largest masking-level differences was used. Masking level differences decreased systematically with increasing interaural level differences for all three groups. At interaural level differences of 36 and 42 dB, the masking level difference persisted for the younger and older normal subjects (1.6 and 1.9 dB, respectively); similar results were obtained from the subjects with hearing losses at a 24-dB interaural level difference. For all subject groups, the S0N0 thresholds were unaffected by changes in the interaural level difference, whereas the S pi N0 thresholds were inversely related to the interaural level difference.
本研究旨在确定双耳声级差对正常听力的年轻和老年受试者以及不对称感音神经性听力损失受试者的言语识别掩蔽级差大小的影响。使用了CID W-1双音节词中掩蔽级差最大的十个词的子组。对于所有三组受试者，掩蔽级差均随着双耳声级差的增加而系统性降低。在双耳声级差为36 dB和42 dB时，年轻和老年正常受试者的掩蔽级差依然存在（分别为1.6 dB和1.9 dB）；在双耳声级差为24 dB时，听力损失受试者也得到了类似结果。对于所有受试者组，S0N0阈值不受双耳声级差变化的影响，而S pi N0阈值与双耳声级差呈负相关。
