Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:2020); German version EN ISO 11691:2020— 18 стр.
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995); German version EN ISO 11691:2009— 16 стр.
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO/DIS 11691:2019); German and English version prEN ISO 11691:2019
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995); German version EN ISO 11691:2009— 16 стр.
Building acoustics - Estimation of acoustic performance of building from the performance of elements - Part 5: Sounds levels due to the service equipment; German version EN 12354-5:2009— 80 стр.