DS/EN ISO 3744:2011
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

Standard No.

DS/EN ISO 3744:2011

Release Date

2011

Published By

Danish Standards Foundation

Latest

DS/EN ISO 3744:2011

Replace

DS/EN ISO 3744:2009 DS/ISO 4872:1978

Scope

This standard specifies methods for determining the sound power level or sound energy level ofa 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.The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands or with frequency-weighting A applied, is calculated using those measurements.

DS/EN ISO 3744:2011 history

• 2011 DS/EN ISO 3744:2011 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
• 0000 DS/EN ISO 3744:2009
• 0000 DS/ISO 4872:1978