BS EN ISO 3744:1995

Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane

Requirements for measuring sound pressure and sound power levels of noise sources.

This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise source, under essentially free field conditions near one or more reflecting planes, in order to calculate the sound power level produced by the noise source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the sound power level of the source is calculated, leading to results which have a grade 2 accuracy.

This British Standard includes the following cross references:

ISO 354:1985, ISO 2204:1979, ISO 3745:1977, ISO 4871:1984, ISO 6926:1990, ISO 7574-1:1985, ISO 7574-4:1985, IEC 225:1966, IEC 651:1979, IEC 804:1985, IEC 942:1988.