BS 5108-1:1991被替代
Sound Attenuation Of Hearing Protectors - Subjective Method Of Measurement
出版：British Standards Institution
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Describes a method for measuring sound attenuation of hearing protectors at the threshold of hearing, to yield values close to the maximum attenuation which are not normally attained under field conditions. This has been adopted because the attenuation values can then be consistently reproduced. This method provides data which are collected at low sound pressure levels but which are also representative of attenuation values at higher levels. An exception is amplitude sensitive hearing protectors for sound pressure levels above the point at which their level dependent characteristics become effective. At this level the method specified is inapplicable.AMD 7552 renumbers this standard to EN 24869 1
© British Standards Institution 2013
Supersedes BS 5108(1983). Implements EN 24869-1.
Superseded and renumbered by BS EN 24869-1.
(07/2004)
ISO 4869-1:1990 - Identical
