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>NSMRL's Computer-Controlled Facility for Real-Ear-Attenuation at Threshold (REAT) Testing of Hearing Protectors: Re-Verification to ANSI Standard
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NSMRL's Computer-Controlled Facility for Real-Ear-Attenuation at Threshold (REAT) Testing of Hearing Protectors: Re-Verification to ANSI Standard
A psychoacoustic research facility incorporating a reverberant sound field exists in the Naval Submarine Medical Research Laboratory (NSMRL) to perform empirical measurement of noise attenuation capabilities of hearing protection devices (HPDs) intended for defending human hearing against hazardous sound. This facility, its instrumentation, and the test protocol employed are implemented to meet the real-ear-attenuation-at-threshold (REAT) test requirements of ANSI standard S12.6-2008 Method for Measuring the Real-Ear Attenuation of Hearing Protectors, hereafter referred to as S12.6-2008 (American National Standards Institute, 2008). This report provides an overview of the physical facility and the instrumentation used to conduct HPD attenuation testing as indicated by S12.6-2008. Furthermore, the procedures employed and the resulting acoustic verification data obtained for demonstrating that the facility meets the guidelines of S12.6-2008, are presented in detail. The verification data presented in this report indicate the facility is in accordance with S12.6-2008.
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