Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane.
NORM herausgegeben am 1.6.1999
Designation standards: STN EN ISO 3744
Classification mark: 011604
Catalog number: 13149
Note: UNGÜLTIG
Publication date standards: 1.6.1999
Approximate weight : 48 g (0.11 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN