Attenuations from hearing protectors and the ABC classification system

  • A. Behar Ontario Hydro, Pickering, Ont., Canada
Keywords: acoustic wave absorption, hearing, noise abatement, safety, attenuations, hearing protectors, ABC classification system, noise level, protected ear

Abstract

Evaluates the accuracy of the CSA ABC class system for rating hearing protectors. The noise level of the protected ear of twelve protectors (six Class A and six Class B) subjected to twelve noises were calculated. It was shown that there is large variation among sound levels from both protector classes as well as overlaps, resulting mostly in overprotection. It is recommended that the ABC system be changed to some other rating system used by the international community
Published
1991-12-01
How to Cite
1.
Behar A. Attenuations from hearing protectors and the ABC classification system. Canadian Acoustics [Internet]. 1991Dec.1 [cited 2019Sep.19];19(5):17-2. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/701
Section
Technical Articles