British & International Standards
BS EN 24869 : ISO 4869 : Acoustics
Sound Attenuation of Hearing Protectors

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Standard Number BS EN 24869-1:1993, ISO 4869-1:1990
Title Acoustics. Hearing protectors. Sound attenuation of hearing protectors. Subjective method of measurement
Abstract Method for measuring sound attenuation at the threshold of hearing, giving consistently reproducible values which are close to the maximum attainable but are unlikely to be achieved in use.
Status Confirmed, Current
Publication Date 28 June 1991
Confirm Date 01 January 2003
Cross References BS 2475, BS 2497:Part 5, BS 3638, BS 5497:Part 1, BS 5969, BS 6397, BS 6655, BS 6698, ISO 8253-2, IEC 60645-1
Replaces BS 5108:1983, ISO 4869-1981
International Relationships EN 24869-1:1992 Identical, ISO 4869-1:1990 Identical
Amended By AMD7552
Descriptors Ear protectors, Protective clothing, Safety measures, Acoustic testing, Acoustic measurement, Audibility, Attenuation, Ear muffs, Ear plugs, Audio frequencies, Sound intensity, Performance testing, Test equipment, Audiometry, Auditory threshold, Hearing (auditory perception), Reverberation time
ICS 13.340.20

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Standard Number BS EN 24869-3:1994, ISO/TR 4869-3:1989
Title Acoustics. Hearing protectors. Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes
Abstract For quality inspection purposes and to investigate production spreads of performance and changes with age.
Status Superseded, Withdrawn
Publication Date 15 February 1994
Confirm Date 01 January 2003
Withdrawn Date 31 August 2007
Cross References BS 903:Part A26, BS 2475, BS 4727:Part 3:Group 08, BS 6397, ISO 4869-1
Replaced By BS EN ISO 4869-3:2007
International Relationships EN 24869-3:1993 Identical, ISO/TR 4869-3:1989 Identical
Supersedes Draft 82/54605 DCDD 192:1990
Descriptors Ear muffs, Ear protectors, Protective clothing, Acoustic testing, Performance testing, Sound intensity, Acoustic measurement, Test equipment, Testing conditions, Inspection
ICS 13.340.20


Noise Measurements

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