保护器-噪声相互作用对听力保护器衰减的噪声降低率（NRR）估计准确性的影响。

The effects of protector-noise interaction on the accuracy of the NRR estimate of hearing protector attenuation.

作者信息

Cluff G L

出版信息

Am Ind Hyg Assoc J. 1986 Apr;47(4):195-8. doi: 10.1080/15298668691389603.

Abstract

A total of 262 noise spectra were divided empirically into three groups and the accuracy of the NRR estimate of hearing protector attenuation was evaluated for each group using 15 hearing protectors. The mean and the standard deviation of the error in the NRR estimate was most stable across the 15 protectors, when noise spectra were characterized by a simple monotonic band-level function yielding a dBC-dBA difference of 3.5 dB or less. Both the octave band attenuation function of the hearing protector and the octave band spectrum of the noise appeared to contribute to the error in the NRR estimate.

摘要

总共262个噪声频谱根据经验被分为三组，并使用15种听力保护器对每组听力保护器衰减的噪声降低率（NRR）估计的准确性进行了评估。当噪声频谱由一个简单的单调频带级函数表征，产生的dB（C）-dB（A）差值为3.5 dB或更小时，噪声降低率估计误差的平均值和标准差在15种保护器中最为稳定。听力保护器的倍频程带衰减函数和噪声的倍频程带频谱似乎都对噪声降低率估计中的误差有影响。