AS/NZS 2499:2000
Acoustics - Measurements of sound insulation in buildings and of buildings elements - Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it
standard by Australian/New Zealand Standards, 01/01/2000
Provides a laboratory method of measurement the airborne sound insulation of a suspended ceiling with a plenum of defined height mounted above an acoustical barrier which separates two rooms of a specified test facility. This Standard has been adopted with national modifications and reproduced from ISO 140-9:1985.