Electroacoustics - Specifications for personal sound exposure meters (IEC 61252:1993 + AMD1:2000 + AMD2:2017); German version EN 61252:1995 + A1:2001 + A2:2017— 35 стр.
Determination of rating levels from measurement data - Part 2: Determination of the noise rating level for occupational activities at the work place for the level range underneath the given risk of hearing damage— 18 стр.
Electroacoustics - Specifications for personal sound exposure meters (IEC 61252:1993 + AMD1:2000 + AMD2:2017); German version EN 61252:1995 + A1:2001 + A2:2017— 35 стр.