Accession Number : ADA267084


Title :   Rating of Hearing Protector Performance for Impulse Noise


Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL


Personal Author(s) : Johnson, Daniel L ; Patterson, James H , Jr


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267084.pdf


Report Date : May 1993


Pagination or Media Count : 14


Abstract : Concern has often been expressed that the performance of hearing protectors in steady noise say 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 (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.... Blast overpressure, Impulse noise, Hearing protectors.


Descriptors :   *PRESSURE , *IMPULSE NOISE , *HEARING , *EAR PROTECTORS , REPRINTS , PEAK VALUES , PERFORMANCE(HUMAN) , AUDIOMETRY , PROTECTION , BLAST WAVES , OVERPRESSURE , HISTORY


Subject Categories : Stress Physiology
      Protective Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE