Abstract
The attenuation provided by a sample of circumaural hearing protectors (ear muffs) was measured using the physical ear attenuation test (PEAT). The PEAT utilized a small electret microphone mounted in a silicon ear plug in the outer ear of a human subject. The subjects were exposed to a high level (about 100 dBA) of pink noise with and without the hearing protector fitted. The attenuation provided by the protector was calculated by subtracting the spectrum measured under the protector from the spectrum measured without the protector. The results of the PEAT evaluation were compared to the results obtained using the test method described in ANSI Standard S12.6‐1984, the Method for the Measurement of the Real‐Ear Attenuation of Hearing Protectors. Agreement was found between the methods for the test frequencies from 250 to 8000 Hz. The PEAT results at 125 Hz were lower than the results obtained with the ANSI S12.6‐1984 method.
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