NTL-AVIATION-AVIATION;NTL-SAFETY AND SECURITY-Human Factors;NTL-AVIATION-Aviation Energy and Environment;
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.
Twenty-one brands of ear protectors, including custom-molded, wearer-molded, and pre-molded types, were evaluated according to American-standard proce...
The existence of binaural beats has long been considered an indication of binaural interaction for timing and for periodicity of information. In the p...
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