ISO 140-9:1985
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
- Standard No.
- ISO 140-9:1985
- Release Date
- 1985
- Published By
- International Organization for Standardization (ISO)
- Status
- Latest
- ISO 140-9:1985
- Scope
- 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.
ISO 140-9:1985 history
- 1985 ISO 140-9:1985 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
