Earplug Rankings Based on the Protector-Attenuation Rating (P-AR)
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-stardard-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.
- Record URL:
- Supersedes Rept. no. FAA-AM-73-20, AD-779 552.
Federal Aviation Administration800 Independence Avenue, SW
Washington, DC United States 20591
- Tobias, J V
- Publication Date: 1975-10
- Media Type: Digital/other
- Pagination: 65 p.
- TRT Terms: Crash cushions; Ear; Hearings; Noise control; Performance; Protective clothing; Ratings
- Uncontrolled Terms: Noise reduction
- Old TRIS Terms: Attenuators; Ear protectors; Performance engineering
- Subject Areas: Data and Information Technology; Environment; Highways; Safety and Human Factors;
- Accession Number: 00133378
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FAA-AM-75-11, FAAAM-B-74-PSY-51, FAAAM-B-75-PSY-55
- Files: NTIS, NTL, USDOT
- Created Date: Jul 13 2002 12:00AM