EP 1967036 A2 20080910 - BI-PLANAR LOUDSPEAKER SYSTEM WITH TIME-PHASED AUDIO OUTPUT
Title (en)
BI-PLANAR LOUDSPEAKER SYSTEM WITH TIME-PHASED AUDIO OUTPUT
Title (de)
BIPLANARES LAUTSPRECHERSYSTEM MIT ZEITPHASENGESTEUERTER AUDIO-AUSGABE
Title (fr)
SYSTEME DE HAUT-PARLEURS BIPLAN AVEC SORTIE AUDIO EN PHASE DANS LE TEMPS
Publication
Application
Priority
- US 2006049577 W 20061229
- US 32387205 A 20051230
Abstract (en)
[origin: WO2007079225A2] The present invention uses a system of three loudspeakers to achieve realistic stereophonic sound reproduction. The method uses a single enclosure for the left and right speakers positioned in front in a parallel plane, with a wedge shaped enclosure with the wedge affixed at the center of the single enclosure, and containing the third speaker positioned in parallel with the single enclosure containing the left and right speakers. The invention incorporates electronic circuitry to process the left and right audio input signals. The left and right channel signals are reduced to either channel, then summed and time- delayed to the center channel speaker. The wedge shaped enclosure interrupts the usual overlap of the left and right channels and fills this area with the specially derived center channel signal, such that the listener perceives a wider sound image space.
IPC 8 full level
H04H 20/88 (2008.01); H04R 5/02 (2006.01)
CPC (source: EP KR)
H04R 1/345 (2013.01 - KR); H04R 5/02 (2013.01 - EP KR); H04R 5/04 (2013.01 - KR); H04S 3/002 (2013.01 - KR); H04R 1/345 (2013.01 - EP); H04R 2205/022 (2013.01 - EP KR); H04S 5/00 (2013.01 - EP); H04S 2400/05 (2013.01 - EP KR)
Citation (search report)
See references of WO 2007079225A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007079225 A2 20070712; WO 2007079225 A3 20080626; CN 101444110 A 20090527; CN 101444110 B 20110525; EP 1967036 A2 20080910; JP 2009532921 A 20090910; KR 20080082663 A 20080911
DOCDB simple family (application)
US 2006049577 W 20061229; CN 200680049988 A 20061229; EP 06848340 A 20061229; JP 2008548769 A 20061229; KR 20087015997 A 20080630