Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter (IEC 62585:2012); German version EN 62585:2012— 41 стр.
Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter (IEC 29/723/CDV:2010); German version prEN 62585:2010
Acoustics - Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels (ISO 6926:2016)— 32 стр.