EP 1125473 B1 20030409 - ACOUSTIC DEVICE ACCORDING TO BENDING WAVE PRINCIPLE
Title (en)
ACOUSTIC DEVICE ACCORDING TO BENDING WAVE PRINCIPLE
Title (de)
AKUSTISCHE VORRICHTUNG NACH DEM BIEGEWELLENPRINZIP
Title (fr)
DISPOSITIF ACOUSTIQUE CONFORME AU PRINCIPE DES ONDES DE FLEXION
Publication
Application
Priority
- GB 9903656 W 19991105
- GB 9824256 A 19981106
Abstract (en)
[origin: WO0028781A1] An acoustic device has an outer shell (1) supporting bending waves and enclosing a volume (2). The bending waves couple to the enclosed volume to provide coupled resonant modes. A transducer (3, 5) is coupled to the shell to excite the coupled resonant modes. The coupling of the enclosed volume can improve the distribution of resonant modes.
IPC 1-7
IPC 8 full level
H04R 9/00 (2006.01); H04R 1/00 (2006.01); H04R 1/02 (2006.01); H04R 1/22 (2006.01); H04R 1/28 (2006.01); H04R 7/12 (2006.01); H04R 7/04 (2006.01); H04R 7/06 (2006.01)
CPC (source: EP KR)
H04R 1/02 (2013.01 - EP KR); H04R 1/227 (2013.01 - EP); H04R 7/122 (2013.01 - EP); H04R 1/2819 (2013.01 - EP); H04R 7/045 (2013.01 - EP); H04R 7/06 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0028781 A1 20000518; AT E237211 T1 20030415; AU 6481399 A 20000529; AU 745969 B2 20020411; BR 9915114 A 20010731; CA 2349861 A1 20000518; CN 1135058 C 20040114; CN 1325606 A 20011205; DE 69906775 D1 20030515; DE 69906775 T2 20040129; EP 1125473 A1 20010822; EP 1125473 B1 20030409; ES 2197682 T3 20040101; GB 9824256 D0 19981230; HK 1035988 A1 20011214; IL 142429 A0 20020310; JP 2002530032 A 20020910; KR 20010080941 A 20010825; NZ 510971 A 20020301; TW 462202 B 20011101; ZA 200102755 B 20011008
DOCDB simple family (application)
GB 9903656 W 19991105; AT 99952703 T 19991105; AU 6481399 A 19991105; BR 9915114 A 19991105; CA 2349861 A 19991105; CN 99812822 A 19991105; DE 69906775 T 19991105; EP 99952703 A 19991105; ES 99952703 T 19991105; GB 9824256 A 19981106; HK 01106542 A 20010915; IL 14242999 A 19991105; JP 2000581852 A 19991105; KR 20017005652 A 20010504; NZ 51097199 A 19991105; TW 88119786 A 19991111; ZA 200102755 A 20010404