NEN EN ISO 11691 : 2009
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ACOUSTICS - MEASUREMENT OF INSERTION LOSS OF DUCTED SILENCERS WITHOUT FLOW - LABORATORY SURVEY METHOD
Published date
12-01-2013
Publisher
Defines 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. Applies to silencers where the design velocity does not exceed 15 m/s.
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