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

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.

SDO:

ISO

Language:

English

ICS Codes:

91.060.30; 91.120.20

Status:

Withdrawn

Publish date:

1985-02-13

Standard Number:

ISO 140-9:1985