DIN EN 61672-2:2018-01 Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests (IEC 61672-2:2013 + AMD1:2017); German version EN 61672-2:2013 + A1:2017
2018DIN EN 61672-2:2018-01 Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests (IEC 61672-2:2013 + AMD1:2017); German version EN 61672-2:2013 + A1:2017