1.1 This test method covers the laboratory testing of some of the acoustical properties of sound attenuating devices including duct liner materials, integral ducts, and in-duct absorptive straight and elbow silencers used in the ventilation systems of buildings. Procedures are described for the measurement of acoustical insertion loss, airflow generated noise, and pressure drop as a function of airflow.

Product Details

Published:

07/01/2020

Number of Pages:

16

File Size:

1 file , 280 KB

Redline File Size:

2 files , 600 KB