UNI EN ISO 3741:2009被替代
Acoustics - Determination Of Sound Power Levels Of Noise Sources Using Sound Pressure - Precision Methods For Reverberation Rooms
出版：Italian Standards
專家解讀視頻
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 [rho]c = 400 N.s/m[3] (where [rho] is the density of air and c is the speed of sound). Also defines test room requirements, source location and general rules for operating conditions, instrumentation and techniques for obtaining an estimate of mean-square sound pressure levels from which the sound power levels of the source in octave or one-third-octave bands are calculated with a grade 1 accuracy.
Supersedes UNI EN 23741 and UNI EN 23742. (07/2001)
ONORM EN ISO 3741:2009 - Identical
SS EN ISO 3741 Ed. 2 (2009) - Identical
UNE EN ISO 3741:2010 - Identical
SN EN ISO 3741:2010 - Identical
ONORM EN ISO 3741:2003 - Identical
NEN EN ISO 3741:2009 - Identical
SN EN ISO 3741:1999 - Identical
SS EN ISO 3741:1999 - Identical
UNE EN ISO 3741:2000 - Identical
NF EN ISO 3741:2000 - Identical
NS EN ISO 3741 Ed. 1 (1999) - Identical
NBN EN ISO 3741 Ed. 3 (1999) - Identical
NEN EN ISO 3741:2010 - Identical
SS EN ISO 3741 Ed. 3 (2010) - Identical
NS EN ISO 3741:2009 - Identical
NBN EN ISO 3741:2009 - Identical
NF EN ISO 3741:2009 - Identical
