Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

Published by	Publication Date	Number of Pages
ASTM	11/01/2018	15

Category: ASTM

Description

ASTM E966 – Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

1.1 This guide may be used to determine the outdoor-indoor noise reduction (OINR), which is the difference in sound pressure level between the free-field level outdoors in the absence of the structure and the resulting sound pressure level in a room. Either a loudspeaker or existing traffic noise or aircraft noise can be used as the source. The outdoor sound field geometry must be described and calculations must account for the way the outdoor level is measured. These results are used with Classification E1332 to calculate the single number rating outdoor-indoor noise isolation class, OINIC. Both OINR and OINIC can vary with outdoor sound incidence angle.