Historical
ISO 140-5:1998
Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 5: Field measurements of airborne sound insulation of fa ade elements and fa ades
This part of ISO 140 specifies two series of methods (element methods and global methods) for measurement of the airborne sound insulation of facade elements and whole facades, respectively. The element methods aim to estimate the sound reduction index of a facade element, for example a window. The most accurate element method uses a loudspeaker as an artificial sound source. Other, less accurate, element methods use available traffic noise. The global methods, on the other hand, aim to estimate the outdoor/indoor sound level difference under actual traffic conditions. The most accurate global methods use the actual traffic as sound source. In addition, a loudspeaker may be used as an artificial sound source. An overview of the methods is given in table 1.
Content Provider
International Organization for Standardization [iso]
