BS EN ISO 3745:2012 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for anechoic rooms and hemi-anechoic rooms
2018BS EN ISO 3745:2012+A1:2017 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for anechoic rooms and hemi-anechoic rooms
2012BS EN ISO 3745:2012 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for anechoic rooms and hemi-anechoic rooms
2010BS EN ISO 3745:2009 Acoustics. Determination of sound power levels of noise sources using sound pressure. Precision methods for anechoic and semi-anechoic rooms