
Acoustics -- Hearing protectors -- Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
出版:International Organization for Standardization

专家解读视频
This document specifies three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when hearing protectors are worn.
NEN-EN-ISO 4869-2:2018 - Identical
UNI EN ISO 4869-2 : 2019 - Identical
EN ISO 4869-2 : 2018 - Identical
PN-EN ISO 4869-2:2018 - Identical
DIN EN ISO 4869-2 E:2019 - Identical
NF EN ISO 4869-2:2018 - Identical
DIN EN ISO 4869-2 : 2019 - Identical
I.S. EN ISO 4869-2:2018 - Identical
BS EN ISO 4869-2:2018 - Identical
NS EN ISO 4869-2 : 2018 - Identical
SN EN ISO 4869-2:2019 - Identical
EN ISO 4869-2 : 2018 - Identical
NEN-EN-ISO 4869-2:2018 - Identical
SS-EN ISO 4869-2:2018 - Identical
BS EN ISO 4869-2:2018 - Identical
?NORM EN ISO 4869-2 : 2019 05 01 - Identical
DIN EN ISO 4869-2 E:2019 - Identical
EN ISO 4869-2 : 1995 COR 2007 - Identical
I.S. EN ISO 4869-2:2018 - Identical
DIN EN ISO 4869-2 : 2019 - Identical
PN-EN ISO 4869-2:2018 - Identical
NF EN ISO 4869-2:2018 - Identical
NS EN ISO 4869-2 : 2018 - Identical
DS/EN ISO 4869-2:2018 - Identical
UNI EN ISO 4869-2 : 2019 - Identical
SS-EN ISO 4869-2:2018 - Identical
EN ISO 4869-2 : 1995 COR 2007 - Identical
?NORM EN ISO 4869-2 : 2019 05 01 - Identical
SN EN ISO 4869-2:2019 - Identical
DS/EN ISO 4869-2:2018 - Identical