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Patent
Title

Hybrider-Schalldaempfer

Other Title
Hybrid silencer
Abstract
The invention relates to a hybrid silencer by which a passive absorber lining is combined with an active electroacoustic system such that the sound dissipation is increased by the impact of the active subsystem on the passive absorber lining in order to obtain an optimized conduit side acoustic impedance and thus enhanced sound dissipation in a wide frequency band, in particular at low frequencies.
Inventor(s)
Mechel, F.P.
Link to Espacenet
http://worldwide.espacenet.com/publicationDetails/biblio?DB=worldwide.espacenet.com&locale=en_EP&FT=D&CC=DE&NR=4027511A
Patent Number
1990-4027511
Publication Date
1991
Language
German
Fraunhofer-Institut für Bauphysik IBP  
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