Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane.
NORMA vydaná dňa 30.4.2010
Designation standards: BS EN ISO 3744:2009
Note: NEPLATNÁ
Publication date standards: 30.4.2010
The number of pages: 42
Approximate weight : 126 g (0.28 lbs)
Country: British technical standard
Kategória: Technické normy BS