BS EN ISO 7235:2009現行
Acoustics. Laboratory measurement procedures for ducted silencers and air-terminal units. Insertion loss, flow noise and total pressure loss
出版：British Standards Institution
專家解讀視頻
Describes the methods for determining: - the insertion loss, in frequency bands, of ducted silencers with and without airflow; - the sound power level, in frequency bands, of the flow noise (or regenerated sound) generated by ducted silencers; - the total pressure loss of silencers with airflow; and - the transmission loss, in frequency bands, of air-terminal units.
? British Standards Institution 2013
ISO 7235:2003 - Identical
SS EN ISO 7235 Ed. 3 (2009) - Identical
NEN EN ISO 7235:2009 - Identical
NF EN ISO 7235:2009 - Identical
NBN EN ISO 7235:2009 - Identical
