
Acoustics - Hearing protectors - Part 2:Estimation of effective A-weighted soundpressure levels when hearing protectorsare worn (ISO 4869-2:2018)
出版:National Standards Authority of Ireland

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.
ISO 4869-2:2018 - Identical
EN ISO 4869-2 : 2018 - Identical
ISO 4869-2:2018 - Identical
EN ISO 4869-2 : 2018 - Identical