Welzl-Müller K, Sattler K
Scand Audiol. 1984;13(4):283-6. doi: 10.3109/01050398409042137.
We determined the necessary signal-to-noise threshold for 50% sentence discrimination in 130 patients with sensorineural hearing disorders with and without a hearing aid, as well as the minimum monosyllable discrimination loss without hearing aid. A significant correlation coefficient was found to exist of the signal-to-noise threshold with vs. that without hearing aid (r = 0.61), and between the minimum discrimination loss and the signal-to-noise threshold with hearing aid (r = 0.38). These differences in the correlation coefficient indicate that the impairment of speech perception in noise when using a hearing aid is obviously due to the deterioration of the signal-to-noise threshold induced by the hearing loss rather than to the discrimination loss per se.
我们测定了130例感音神经性听力障碍患者在佩戴和未佩戴助听器情况下50%句子辨别所需的信噪比阈值，以及未佩戴助听器时的最小单音节辨别损失。结果发现，佩戴助听器与未佩戴助听器时的信噪比阈值之间存在显著的相关系数（r = 0.61），且最小辨别损失与佩戴助听器时的信噪比阈值之间也存在显著相关系数（r = 0.38）。这些相关系数的差异表明，使用助听器时噪声中言语感知的损害明显是由于听力损失导致的信噪比阈值恶化，而非辨别损失本身。
