NEN EN ISO 3744:2010现行
Acoustics - Determination Of Sound Power Levels And Sound Energy Levels Of Noise Sources Using Sound Pressure - Engineering Methods For An Essentially Free Field Over A Reflecting Plane
出版：Nederlands Normalisatie Instituut
专家解读视频
Defines methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes.
Supersedes NEN ISO 3744. (10/2002) Supersedes NEN ISO 4872. (11/2010)
UNI EN ISO 3744:2009 - Identical
BS EN ISO 3744:2009 - Identical
DIN EN ISO 3744 (2009-11) - Identical
NF EN ISO 3744:2009 - Identical
NS EN ISO 3744:2009 - Identical
ONORM EN ISO 3744:2009 - Identical
SS EN ISO 3744 Ed. 2 (2009) - Identical
UNE EN ISO 3744:2010 - Identical
SN EN ISO 3744:2010 - Identical
NBN EN ISO 3744:2010 - Identical
I.S. EN ISO 3744:2010 - Identical
SS EN ISO 3744 Ed. 3 (2010) - Identical
NF EN ISO 3744:2012 - Identical
UNI EN ISO 3744:2010 - Identical
BS EN ISO 3744:2010 - Identical
NS EN ISO 3744:2010 - Identical
ONORM EN ISO 3744:2011 - Identical
SN EN ISO 3744:2011 - Identical
UNE EN ISO 3744:2011 - Identical
