Acoustics; hearing protectors; part 3: simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes (ISO/TR 4869-3:1989); German version EN 24869-3:1993— 10 стр.
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:2018); German version EN ISO 4869-2:2018
Acoustics - Determination of sound immission from sound sources placed closed to the ear - Part 1: Technique using a microphone in a real ear (MIRE technique) (ISO 11904-1:2002)
Hearing protectors - Safety requirements and testing - Part 3: Ear muffs attached to an industrial safety helmet; German version EN 352-3:1996— 19 стр.
Hearing protectors - Safety requirements and testing - Part 3: Ear muffs attached to an industrial safety helmet; German version EN 352-3:1996— 19 стр.