Withdrawn
Specifies a laboratory substitution method to determine the insertion loss of ducted circular and rectangular silencers without flow, as well as other duct elements for use in ventilating and air-conditioning systems.
WITHDRAWN
ISO 11691:1995
95.99
Withdrawal of Standard
Jul 1, 2020
PUBLISHED
ISO 11691:2020
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)
60.60 Standard published