2016DIN EN 61260-3:2016-09 Electroacoustics - Octave-band and fractional-octave-band filters - Part 3: Periodic tests (IEC 61260-3:2016); German version EN 61260-3:2016
1970DIN EN 61260-3 E:2014-10 Electroacoustics - Octave-band and fractional-octave-band filters - Part 3: Periodic tests