DIN EN ISO 4869-2:1995 声学.听力保护器.第2部分:当听力保护器磨损时有效A-重声压级的评估 (ISO 4869-2:1994); 德文版本 EN ISO 4869-2:1995
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:1994); German version EN ISO 4869-2:1995
The document describes three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when hearing protectors are worn. The metho...