ÖNORM EN ISO 11691:2021 03 01
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Acoustics — Measurement of insertion loss of ducted silencers without flow — Laboratory survey method (ISO 11691:2020)
Available format(s)
Hardcopy
Language(s)
German - English
Published date
01-03-2021
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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