The noise attenuation values of commercial and military versions of earmuffs were measured using a Finnish assault rifle (RK762) as the sound source.
The C-weighted peak level at the entrance of the left ear of the shooter was 156 dB (SD 1.0 dB ; n=25 shots).
The noise was analyzed both outside and inside ear muffs on military volunteers on an open shooting range.
All the earmuffs attenuated the C-weighted peak level to a value of less than 135 dB, which is less than the proposed values recommended by hearing damage criteria.
Communication hearing protectors seem to function and attenuate sufficiently against the peak levels of the impulse noises used in this study.
Mots-clés Pascal : Protection, Casque antibruit, Audition, Atténuation, Bruit, Communication, Mesure acoustique, Niveau pression acoustique, Etude comparative, Matériel militaire, Homme, Arme à feu
Mots-clés Pascal anglais : Protection, Hearing muffler, Hearing, Attenuation, Noise, Communication, Acoustic measurement, Sound pressure level, Comparative study, Military equipment, Human, Fire arm
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0098059
Code Inist : 002B30A06C. Création : 22/06/1998.