
Sound power levels of noise sources. Engineering methods for determination of sound power levels for sources in free-field conditions over a reflecting plane.
NORM herausgegeben am 30.11.1981
Designation standards: BS 4196-4:1981
Note: UNGÜLTIG
Publication date standards: 30.11.1981
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: British technical standard
Kategorie: Technische Normen BS