A SYSTEM IMPLEMENTATION OF AN ACTIVE NOISE CONTROL SYSTEM COMBINED WITH PASSIVE SILENCERS FOR IMPROVED NOISE REDUCTION IN DUCTS
Blekinge Institute of Technology, School of Engineering, Department of Signal Processing2007 (English)Conference paper (Refereed) Published
This paper presents a feedforward active noise control system combined with passive silencers for reducing acoustic noise propagating through ventilation ducts. It is investigated if the passive silencers can increase the noise attenuation potential of the active noise control system and experimental results are presented. The results show that installing a passive silencer results in less pronounced standing waves in the duct and hence to performance increase of the active noise control system. Evaluating measurements regarding the performance of the active noise control system have also been conducted in an acoustic laboratory according to an ISO-standard.
Place, publisher, year, edition, pages
Lyon, France, 2007.
Signal Processing, Active Noise Control, Acoustics, Ducts
IdentifiersURN: urn:nbn:se:bth-9033Local ID: oai:bth.se:forskinfo04FEED0A81BD3838C1257337007235D1OAI: oai:DiVA.org:bth-9033DiVA: diva2:836809