EP 1070437 A1 20010124 - ACOUSTIC DEVICE
Title (en)
ACOUSTIC DEVICE
Title (de)
AKUSTISCHES GERÄT
Title (fr)
DISPOSITIF ACOUSTIQUE
Publication
Application
Priority
- GB 9901048 W 19990406
- GB 9807316 A 19980407
Abstract (en)
[origin: WO9952322A1] From one aspect the invention is an acoustic device, e.g. a loudspeaker, comprising a resonant multi-mode acoustic radiator panel having opposed faces, a vibration exciter arranged to apply bending wave vibration to the resonant panel to produce an acoustic output, means defining a cavity enclosing at least a portion of one panel face and arranged to contain acoustic radiation from the said portion of the panel face, wherein the cavity is such as to modify the modal behaviour of the panel. From another aspect the invention is a method of modifying the modal behaviour of a resonant panel acoustic device, comprising bringing the resonant panel into close proximity with a boundary surface to define a resonant cavity therebetween.
IPC 1-7
IPC 8 full level
H04R 1/28 (2006.01); H04R 7/04 (2006.01); H04R 1/02 (2006.01)
CPC (source: EP KR)
H04R 1/24 (2013.01 - KR); H04R 7/045 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9952322 A1 19991014; AR 019019 A1 20011226; AT E334567 T1 20060815; AU 3340099 A 19991025; BG 104811 A 20010731; BR 9909496 A 20001212; CA 2326193 A1 19991014; CN 100417304 C 20080903; CN 1296719 A 20010523; DE 69932507 D1 20060907; DE 69932507 T2 20070719; EA 200001038 A1 20010423; EP 1070437 A1 20010124; EP 1070437 B1 20060726; GB 9807316 D0 19980603; HK 1030327 A1 20010427; HU P0103916 A2 20020328; HU P0103916 A3 20021228; ID 27518 A 20010412; IL 138310 A0 20011031; JP 2002511681 A 20020416; KR 20010042491 A 20010525; NO 20005056 D0 20001006; NO 20005056 L 20001206; NZ 506732 A 20021126; PL 343440 A1 20010813; SK 14932000 A3 20010510; TR 200002920 T2 20001221; TW 462201 B 20011101; ZA 200004675 B 20020227
DOCDB simple family (application)
GB 9901048 W 19990406; AR P990101546 A 19990406; AT 99914672 T 19990406; AU 3340099 A 19990406; BG 10481100 A 20000929; BR 9909496 A 19990406; CA 2326193 A 19990406; CN 99804765 A 19990406; DE 69932507 T 19990406; EA 200001038 A 19990406; EP 99914672 A 19990406; GB 9807316 A 19980407; HK 01101083 A 20010214; HU P0103916 A 19990406; ID 20001944 A 19990406; IL 13831099 A 19990406; JP 2000542951 A 19990406; KR 20007011113 A 20001006; NO 20005056 A 20001006; NZ 50673299 A 19990406; PL 34344099 A 19990406; SK 14932000 A 19990406; TR 200002920 T 19990406; TW 88105770 A 19990412; ZA 200004675 A 20000906