DS/EN ISO 7235:2009
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss

Standard No.

DS/EN ISO 7235:2009

Release Date

2009

Published By

Danish Standards Foundation

Latest

DS/EN ISO 7235:2009

Replace

DS/EN ISO 7235:2003

Scope

This International Standard specifies 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.The measurement procedures are intended for laboratory measurements at ambient temperature.Measurements on silencers in situ are specified in ISO 11820.It is to be noted that the results determined in a laboratory according to this International Standard will not necessarily be

DS/EN ISO 7235:2009 history

• 2009 DS/EN ISO 7235:2009 Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
• 0000 DS/EN ISO 7235:2003