EP 1506691 B1 20051102 - LOUDSPEAKER
Title (en)
LOUDSPEAKER
Title (de)
LAUTSPRECHER
Title (fr)
HAUT-PARLEUR
Publication
Application
Priority
- DE 10238325 A 20020816
- EP 0309036 W 20030814
Abstract (en)
[origin: WO2004019652A2] The invention relates to a loudspeaker comprising a membrane, a first excitation device (14) for producing structure-borne noise in the membrane (12), and a second excitation device (16) which is different to the first and is used to displace the membrane (12) in a longitudinal oscillating movement perpendicularly to the membrane expansion direction. According to the invention, the problem of the too weak bass tone reproduction or of the quantity opposing the invisible integration or installation is solved by introducing a second excitation system which moves the membrane (12), or the plate used as a membrane, back and forth in a uniform manner, in addition to the bending oscillations of the structure-borne noise. Sound reproduction is thus rendered possible over the entire acoustic frequency range, without hindering the aim of invisible integration or installation.
IPC 1-7
IPC 8 full level
H04R 1/24 (2006.01); H04R 1/28 (2006.01); H04R 7/04 (2006.01); H04R 7/20 (2006.01); H04R 9/04 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP US)
H04R 1/24 (2013.01 - EP US); H04R 7/045 (2013.01 - EP US); H04R 7/20 (2013.01 - EP US); H04R 9/045 (2013.01 - EP US); H04R 17/00 (2013.01 - EP US); H04R 2440/07 (2013.01 - EP US); H04S 2420/13 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004019652 A2 20040304; WO 2004019652 A3 20040408; AT E308867 T1 20051115; DE 10238325 A1 20040311; DE 50301564 D1 20051208; EP 1506691 A2 20050216; EP 1506691 B1 20051102; HK 1074963 A1 20051125; JP 2006500803 A 20060105; JP 4007453 B2 20071114; US 2005157905 A1 20050721; US 7391879 B2 20080624
DOCDB simple family (application)
EP 0309036 W 20030814; AT 03792319 T 20030814; DE 10238325 A 20020816; DE 50301564 T 20030814; EP 03792319 A 20030814; HK 05107004 A 20050815; JP 2004530150 A 20030814; US 4612305 A 20050128