British Standards Document
BS EN ISO 3746
Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Survey method using an enveloping measurement surface over a reflecting plane

https://doi.org/10.3403/30094857U

BS EN ISO 3746 is maintained by EH/1/4. The current release of this standard is:

BS EN ISO 3746:2010 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Survey method using an enveloping measurement surface over a reflecting plane

https://doi.org/10.3403/30094857 (published 31/12/2010)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS EN ISO 3746:2009 [current until 31/12/2010]
BS EN ISO 3746:1996 [current until 30/04/2010]