BS EN ISO 4869 : acoustics : Hearing Protectors
Standard Number : BS EN ISO 4869-1:2018
Title : Acoustics. Hearing protectors. Subjective method for the measurement of sound attenuation
Status : Current
Replaces : BS EN 24869-1:1993, ISO 4869-1:1990
International Relationships : EN ISO 4869-1:2018, ISO 4869-1:2018
Standard Number : BS EN ISO 4869-2:2018
Title : Acoustics. Hearing protectors. Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
Status : Current
Replaces : BS EN ISO 4869-2:1995
International Relationships : EN ISO 4869-2:2018, ISO 4869-2:2018
Standard Number : BS EN ISO 4869-3:2007
Title : Acoustics. Hearing protectors. Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture
Status : Confirmed. Current
International Relationships : EN ISO 4869-3:2007, ISO 4869-3:2007
Standard Number : BS EN ISO 4869-4:2000
Title : Acoustics. Hearing protectors. Measurement of effective sound pressure levels for level-dependent sound-restoration ear muffs
Status : Current
International Relationships : EN ISO 4869-4:2000, ISO/TR 4869-4:1998