EP 1216600 A2 20020626 - MULTIPLE SPEAKER
Title (en)
MULTIPLE SPEAKER
Title (de)
LAUTSPRECHERKOMBINATION
Title (fr)
HAUT-PARLEUR MULTIPLE
Publication
Application
Priority
- DE 0003378 W 20000928
- DE 19947178 A 19991001
- DE 19951406 A 19991026
Abstract (en)
[origin: US7088833B1] The invention relates to a loudspeaker combination comprised of at least two loudspeakers, of which one is preceded by a low-pass frequency filter, the other by a phase shifter in the form of an all-pass filter. The invention addresses the problem of providing with simple means a configuration simple of realization of such a loudspeaker combination, whose frequency response and whose radiation characteristic is significantly improved. The invention resides therein that the other loudspeaker or the other loudspeakers is/are each preceded by at least one phase shifter, with all phase shifters being tuned with respect to their phase setting to the phase position of the loudspeakers radiating lower tones, such that all loudspeakers radiate the low tones in like phase position. The fundamental idea is herein: several primarily identically structured loudspeakers can be employed, all or at least the major portion of the loudspeakers are allowed to transmit low tones, with the loudspeakers, which, in addition to the low frequencies, also have to transmit higher frequencies, being changed in their phase position such that the low and the particular lower frequencies are radiated in identical phase position. A large loudspeaker area therein transmits the low frequencies, a smaller the medium and high frequencies. This yields better transmission results than can be attained with loudspeakers laid out in their structural form for separated frequency ranges. Hereby the technical expenditures are low, the possibly attainable improvement of radiation characteristics, however, is remarkable.
IPC 1-7
IPC 8 full level
H04R 3/14 (2006.01)
CPC (source: EP US)
H04R 3/14 (2013.01 - EP US)
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 0126412 A2 20010412; WO 0126412 A3 20011122; AT E387074 T1 20080315; DE 50014983 D1 20080403; EP 1216600 A2 20020626; EP 1216600 B1 20080220; JP 2003511928 A 20030325; US 7088833 B1 20060808
DOCDB simple family (application)
DE 0003378 W 20000928; AT 00978952 T 20000928; DE 50014983 T 20000928; EP 00978952 A 20000928; JP 2001529244 A 20000928; US 4914702 A 20020208