EP 1050190 A1 20001108 - ACTIVE ACOUSTIC DEVICES COMPRISING PANEL MEMBERS
Title (en)
ACTIVE ACOUSTIC DEVICES COMPRISING PANEL MEMBERS
Title (de)
AKTIVE AKUSTISCHE VORRICHTUNGEN MIT PLATTENFÖRMIGEN ELEMENTEN
Title (fr)
DISPOSITIFS ACOUSTIQUES ACTIFS A PANNEAU
Publication
Application
Priority
- GB 9900143 W 19990115
- GB 9801057 A 19980120
- GB 9801054 A 19980120
- GB 9811100 A 19980523
- GB 9813293 A 19980620
Abstract (en)
[origin: WO9937121A1] Active acoustic device comprises a panel member (11) having distribution of resonant modes of bending wave action determining acoustic performance in conjunction with transducer means (31-34). The transducer means (31-34) is coupled to the panel member (11) at a marginal position. The arrangement is such as to result in acoustically acceptable action dependent on said distribution of active said resonant modes. Methods of selecting the transducer location, or improvement by location of localised marginal clamping, rely on assessing best or better operative interaction of said transducer means (31-34) and the panel members (11) according to parameters of acoustic output for the device as an acoustic radiator.
IPC 1-7
IPC 8 full level
H04R 17/00 (2006.01); H04R 7/04 (2006.01); H04R 7/06 (2006.01); H04R 7/10 (2006.01)
CPC (source: EP KR)
H04R 7/045 (2013.01 - EP); H04R 7/26 (2013.01 - KR); H04R 2440/05 (2013.01 - EP); H04R 2499/15 (2013.01 - EP)
Citation (search report)
See references of WO 9937121A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9937121 A1 19990722; AR 014430 A1 20010228; AT E280482 T1 20041115; AU 2068199 A 19990802; AU 747693 B2 20020516; BG 104543 A 20010131; BR 9907145 A 20001024; CA 2318292 A1 19990722; CN 1287766 A 20010314; CN 1287766 B 20100623; DE 69839134 D1 20080327; DE 69839134 T2 20090212; DE 69921295 D1 20041125; DE 69921295 T2 20060209; DE 69921295 T8 20060706; EA 200000781 A1 20001225; EP 1050190 A1 20001108; EP 1050190 B1 20041020; EP 1414266 A2 20040428; EP 1414266 A3 20060816; EP 1414266 B1 20080213; HK 1029247 A1 20010323; HU P0102858 A2 20011228; HU P0102858 A3 20030328; IL 136820 A0 20010614; JP 2002510182 A 20020402; JP 4173283 B2 20081029; KR 100646191 B1 20061117; KR 20010024874 A 20010326; NO 20003705 D0 20000719; NO 20003705 L 20000920; NZ 504133 A 20020328; PL 341377 A1 20010409; SK 10822000 A3 20001211; TR 200002108 T2 20001121; TW 432889 B 20010501; YU 36800 A 20020318
DOCDB simple family (application)
GB 9900143 W 19990115; AR P990100197 A 19990119; AT 99901055 T 19990115; AU 2068199 A 19990115; BG 10454300 A 20000616; BR 9907145 A 19990115; CA 2318292 A 19990115; CN 99801907 A 19990115; DE 69839134 T 19990115; DE 69921295 T 19990115; EA 200000781 A 19990115; EP 04075008 A 19990115; EP 99901055 A 19990115; HK 00107658 A 20001129; HU P0102858 A 19990115; IL 13682099 A 19990115; JP 2000540693 A 19990115; KR 20007007968 A 20000720; NO 20003705 A 20000719; NZ 50413399 A 19990115; PL 34137799 A 19990115; SK 10822000 A 19990115; TR 200002108 T 19990115; TW 88101010 A 19990122; YU 36800 A 19990115