Withdrawn
Specifies a method for measuring a quantity called the suspended ceiling normalized level difference when the sound transmitted by paths other than the required paths is negligible.
WITHDRAWN
ISO 140-9:1985
95.99
Withdrawal of Standard
Mar 20, 2006
WITHDRAWN
ISO 10848-2:2006
Acoustics — Measurements of sound insulation in buildings and of building elements — Part 9: Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it
95.99 Withdrawal of Standard