2011DIN EN ISO 3747:2011-03 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering/survey methods for use in situ in a reverberant environment (ISO 3747:2010); German version EN ISO 3747:2010
2011DIN EN ISO 3747:2011 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering/survey methods for use in situ in a reverberant environment (ISO 3747:2010); German version EN ISO 3747:2010
2009DIN EN ISO 3747:2009 Acoustics - Determination of sound power levels of noise sources using sound pressure - Comparison method in situ (ISO 3747:2000); English version of DIN EN ISO 3747:2009-11
2000DIN EN ISO 3747:2001 Acoustics — Determination of sound power levels of noise sources using sound pressure — Comparison method for use in situ