Electroacoustics - Octave-band and fractional-octave-band filters - Part 2: Pattern-evaluation tests (IEC 29/845/CDV:2014); German version prEN 61260-2:2014
Electroacoustics - Octave-band and fractional-octave-band filters - Part 2: Pattern-evaluation tests (IEC 61260-2:2016); German version EN 61260-2:2016— 30 стр.