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A crew of listeners with no more than "slight" hearing loss who exhibit binaural deficits also exhibit higher levels of stimulus-independent internal noise.
The Journal of the Acoustical Society of America ( IF 2.4 ) Pub Date : 2020-05-05 , DOI: 10.1121/10.0001207
Leslie R Bernstein 1 , Constantine Trahiotis 1
Affiliation  

Listeners having, at most, “slight” hearing loss may exhibit deficits in binaural detection which appear to stem from increased levels of stimulus-dependent, additive internal noise [Bernstein and Trahiotis, J. Acoust. Soc. Am. 140, 3540–3548 (2016); J. Acoust. Soc. Am. 144, 292–307 (2018)]. This study reports that a small crew of such listeners also exhibits increased levels of low-level, stimulus-independent, additive internal noise. Detection thresholds were measured in: (1) the NoSπ configuration as a function of masker level; (2) the NρSπ configuration as a function of masker interaural correlation (ρ); (3) “the quiet” for So and Sπ tonal signals. Those measures were combined suitably to yield estimates of stimulus-independent, additive internal noise, separately, at center frequencies of 250, 500, and 4000 Hz. Derived levels of internal noise were found to be elevated, by about 5 dB at 250 and 500 Hz, and by about 9 dB at 4 kHz, for the group of listeners having no more than slight hearing loss and who exhibited deficits in binaural detection. The new findings, taken together with earlier investigations by the authors (which included data obtained from dozens of listeners), provide evidence that such listeners have greater levels of both stimulus-dependent and stimulus-independent, additive internal noise.

中文翻译:

一组只有“轻微”听力损失且表现出双耳缺陷的听众也表现出更高水平的与刺激无关的内部噪音。

最多有“轻微”听力损失的听众可能会表现出双耳检测缺陷,这似乎源于刺激依赖的附加内部噪声水平的增加[Bernstein and Trahiotis, J. Acoust。社会党。是。140 , 3540–3548 (2016); J. 声学。社会党。是。144 , 292–307 (2018)]。这项研究报告说,一小部分这样的听众也表现出更高水平的低水平、独立于刺激的、附加的内部噪音。检测阈值在以下方面进行测量:(1)NoS π配置作为掩蔽水平的函数;(2) N ρ S π配置作为掩蔽耳间相关性 ( ρ ) 的函数;(3) So 和 S π的“安静”音调信号。将这些措施适当地结合起来,以分别在 250、500 和 4000 Hz 的中心频率处产生与刺激无关的附加内部噪声的估计值。对于听力损失不超过轻微且表现出双耳检测缺陷的听者组,派生的内部噪声水平在 250 和 500 Hz 时升高了约 5 dB,在 4 kHz 时升高了约 9 dB。新发现与作者早期的调查(包括从数十名听众获得的数据)一起提供了证据,表明这些听众具有更高水平的刺激依赖和刺激独立的附加内部噪声。
更新日期:2020-05-05
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