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:
  • https://rosap.ntl.bts.gov/view/dot/21069
• Supplemental Notes:
  • Supersedes Rept. no. FAA-AM-73-20, AD-779 552.
• Corporate Authors:

  Federal Aviation Administration

  800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Tobias, J V
• Publication Date: 1975-10

Media Info

• Media Type: Digital/other
• Pagination: 65 p.

Subject/Index Terms

• 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;

Filing Info

• 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