
Acoustics - Determination Of Sound Power Levels Of Noise Sources Using Sound Pressure - Precision Methods For Reverberation Rooms
出版:Standardiserings-Kommissionen I Sverige

专家解读视频
Describes a direct method and a comparison method for determining the sound power level that would be produced by a source operating in an environment at standard meteorological conditions corresponding to a characteristic impedance of c = 400 N.s/m[3].
Supersedes SS EN 23741 & SS ISO 3741 (05/2000) Supersedes SS EN 23742 (07/2001) Supersedes SS ISO 3742 (07/2006)
UNI EN ISO 3741:2009 - Identical
NF EN ISO 3741:2009 - Identical
NBN EN ISO 3741:2009 - Identical
NS EN ISO 3741:2009 - Identical
ONORM EN ISO 3741:2009 - Identical
UNE EN ISO 3741:2010 - Identical
SN EN ISO 3741:2010 - Identical
SN EN ISO 3741:1999 - Identical
NEN EN ISO 3741:2009 - Identical
UNE EN ISO 3741:2000 - Identical