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ANSI/ASA S12.6-2008

Methods for Measuring the Real-Ear Attenuation of Hearing Protectors

Specifies laboratory-based procedures for measuring, analyzing & reporting passive noise-reducing capabilities of hearing protection devices. The procedures consist of psychophysical tests conducted on human subjects to determine real-ear attenuation measured at hearing threshold. Two fitting procedures are provided: Method A-trained subject fit and Method B-inexperienced subject fit, intended to approximate protection that can be attained by groups of informed users in workplace hearing conservation programs.

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Acoustical Society of America [ASA]


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