UNI EN ISO 11691:2021
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The latest, up-to-date edition.
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method
Published date
21-01-2021
This document specifies a laboratory substitution method to determine the insertion loss without flow of ducted, mainly absorbent, circular and rectangular silencers, as well as other duct elements for use in ventilating and air-conditioning systems.
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