EP 0858651 B1 19990616 - ACTIVE ACOUSTIC ATTENUATION DEVICE FOR USE IN A DUCT, PARTICULARLY FOR SOUNDPROOFING A VENTILATION AND/OR AIR-CONDITIONING NETWORK
Title (en)
ACTIVE ACOUSTIC ATTENUATION DEVICE FOR USE IN A DUCT, PARTICULARLY FOR SOUNDPROOFING A VENTILATION AND/OR AIR-CONDITIONING NETWORK
Title (de)
AKTIVE AKUSTISCHE DÄMPFUNGSANORDNUNG ZUR ANORDNUNG INNERHALB EINES ROHRES,INSBESONDERE ZUR SCHALLDÄMPFUNG EINES BELÜFTUNGS- UND/ODER KLIMANETZWERKS
Title (fr)
DISPOSITIF D'ATTENUATION ACOUSTIQUE ACTIVE DESTINE A ETRE DISPOSE A L'INTERIEUR D'UN CONDUIT, EN PARTICULIER POUR L'INSONORISATION DE RESEAU DE VENTILATION ET/OU DE CLIMATISATION
Publication
Application
Priority
- FR 9601694 W 19961029
- FR 9512802 A 19951030
Abstract (en)
[origin: US7248704B2] The device for the active sound attenuation of a sound signal propagated in a duct comprises: at least first sensor means for a first sound signal, attenuation actuating means supplying an active sound attenuation signal in response to a selected control signal, an electronic control means generating the active sound attenuation signal for the actuating means. The first sensor means and the actuating means are arranged completely inside the duct opposite one another and at a selected distance from the casing of the duct, the axis of symmetry of the radiation of the actuating means and the axis of symmetry of the first sensor means are substantially parallel to the direction of propagation of the sound signal in the duct, and the actuating means are arranged upstream of the first sensor means in the direction of propagation of the sound signal in the duct.
IPC 1-7
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17857 (2018.01 - EP US); G10K 11/17861 (2018.01 - EP US); G10K 11/17881 (2018.01 - EP US); G10K 2210/104 (2013.01 - EP US); G10K 2210/112 (2013.01 - EP US); G10K 2210/3027 (2013.01 - EP US); G10K 2210/3214 (2013.01 - EP US); G10K 2210/3219 (2013.01 - EP US); G10K 2210/509 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9716816 A1 19970509; AT E181444 T1 19990715; AU 719258 B2 20000504; AU 7498696 A 19970522; CA 2233253 A1 19970509; CA 2233253 C 20050816; DE 69602966 D1 19990722; DE 69602966 T2 19991223; EP 0858651 A1 19980819; EP 0858651 B1 19990616; ES 2134645 T3 19991001; FR 2740599 A1 19970430; FR 2740599 B1 19971219; HK 1015923 A1 19991022; US 2003053635 A1 20030320; US 7248704 B2 20070724
DOCDB simple family (application)
FR 9601694 W 19961029; AT 96937355 T 19961029; AU 7498696 A 19961029; CA 2233253 A 19961029; DE 69602966 T 19961029; EP 96937355 A 19961029; ES 96937355 T 19961029; FR 9512802 A 19951030; HK 99100689 A 19990219; US 28690102 A 20021104