DIN EN ISO 3747-2011 声学.声压法测定声源的声功率级.反射环境内使用的现场工程/调查法(ISO 3747-2010).德文版本EN ISO 3747-2010
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
This International Standard specifies a method for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping a noise source(machinery or equipment) mounted in sity in a reverberant environment,with those from a calibrated reference sound source.