Rating of Hearing Protector Performance for Impulse Noise
نویسندگان
چکیده
Concern has often been expressed that the performance of hearing protectors in steady noise may not apply to their performance in impulse noise. Our current.studies, as well as other studies, support the fact that there is a large difference in performance. In all cases, the performance of a protector is much better for impulse noise than for continuous noise. For example, we are obtaining at least 20 dB of protection for hearing protectors with a Noise Reduction Rating (NRR) of essentially zero. We believe that it is not the NRR procedure at fault: but the fact that, for impulse noise, A-weighting does not discriminate enough against low-frequency energy.
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