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EVS-EN 24869-1:1999

Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation

General information
Withdrawn from 03.12.2018
Base Documents
ISO 4869-1:1990; EN 24869-1:1992
Directives or regulations
None
Standard history
Status
Date
Type
Name
03.12.2018
Main
01.01.2000
Main
Specifies a method for measuring sound attenuation at the threshold of hearing. The procedure is designed to yield values close to the maximum attenuation which are not normally attained under field conditions. The values reflect the attenuating characteristics only to the extent that users wear the device in the same manner as did the test subjects. Data are collected at low sound pressure levels but which are also representative of the values at higher sound pressure levels.
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