Sound power measurement
Dewesoft offers a full sound power measurement module. Sound power is a characteristic of a sound source and it does not depend on the distance from the source. Therefore, sound power is the only practical way of comparing different sound sources.
The sound power procedure is described with standards. They define types of noise and noise sources, test environment, measurement uncertainty, criteria for background noise, criteria for air temperature and humidity, instrumentation equipment, and the position of microphones.
Dewesoft's sound power solution supports the following international standards:
ISO 3741 - specifies precision methods for determining the sound power level of a noise source from sound pressure levels measured in a reverberation test room
ISO 3744/639x - specifies 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
ISO 3745 - specifies various methods for determining the sound power levels and sound energy levels of noise sources including machinery, equipment, and their sub-assemblies