Standard Test Method for Laboratory Measurements of Acoustical and Airflow Performance of Duct Liner Materials and Prefabricated Silencers (Includes all amendments And changes 10/15/2020).
NORMA vydaná dňa 1.6.2013
Označenie normy: ASTM E477-13e1
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.6.2013
Počet strán: 14
Približná hmotnosť: 42 g (0.09 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
airflow generated noise, airflow performance, duct liner materials, insertion loss, prefabricated elbow silencers, prefabricated straight silencers,, ICS Number Code 91.120.20 (Acoustics in buildings. Sound insulation)