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Audiometric Configurations and Repeatability in Noise-Induced Hearing Loss

机译：噪声引起的听力损失中的听力配置和重复性

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The pure-tone audiograms of an otologically screened group of subjects with known noise exposures in a variety of industrial occupations are analyzed. Frequencies of the audiometric notch vary from 2.5 to over 6 kHZ, the majority occurring in the region of 4 kHZ. Notch frequency and depth are highly correlated between left and right ears. Audiogram shape is examined by reference to deviations from a normalized shape which takes care of the individual ages and noise exposures. These deviations differ widely between subjects but are highly correlated between left and right ears at each frequency. No consistent pattern is found that relates to age or to the type of noise. The shape characteristics statistics can assist in establishing limits within which an augiogram may be expected to lie in cases of hearing loss due to noise that are not confounded with other causes.

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