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Edition:OAM report.
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NTL Classification:NTL-AVIATION-AVIATION;NTL-SAFETY AND SECURITY-Human Factors;NTL-AVIATION-Aviation Energy and Environment;
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Abstract:Forty-five attenuation spectra for earplugs were classified according to a simplified method designed to produce single-number ratings of noise reduction. The rating procedure was applied to the mean attenuation scores, to mean-minus-one-standard-deviation scores, and to mean-minus-two-standard-deviations scores. The reporting of all three numbers seems to give the fairest indication of an earplug's value in controlling hearing damage in noise-exposed populations. The tests are described and ranked.
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