EP 1177707 A2 20020206 - CENTRALIZING OF A SPATIALLY EXPANDED STEREOPHONIC AUDIO IMAGE
Title (en)
CENTRALIZING OF A SPATIALLY EXPANDED STEREOPHONIC AUDIO IMAGE
Title (de)
ZENTRIERUNG EINES RÄUMLICH ERWEITERTEN STEREOPHONISCHEN TONBILDES
Title (fr)
CENTRAGE D'UNE IMAGE DE SONS STEREOPHONIQUES DILATEE SPATIALEMENT
Publication
Application
Priority
- US 0013049 W 20000512
- US 13400599 P 19990513
Abstract (en)
[origin: WO0070913A2] In a stereophonic system having sum and difference signals with expanded spatial imaging, localization of center audio materials more towards the center is accomplished by equlization of the (L+R) sum signal. The equalization comprises decreasing the bass response while increasing the treble response of the sum signal with the desired bass reduction being accomplished by the use of a gyrator to economically synthesize an inductance. Additionally, the equalizations in the (L+R) sum signal to reduce the signal at bass frequencies and to increase the signal at treble frequencies are switchable singly or in combination between "ON" and "OFF" modes.
IPC 1-7
IPC 8 full level
CPC (source: EP KR)
H04R 3/04 (2013.01 - KR); H04S 1/00 (2013.01 - EP); H04S 1/002 (2013.01 - KR); H04S 7/30 (2013.01 - KR)
Citation (search report)
See references of WO 0070913A2
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 0070913 A2 20001123; WO 0070913 A3 20010816; WO 0070913 A9 20020418; AU 5008100 A 20001205; CN 1227950 C 20051116; CN 1364393 A 20020814; DE 60013807 D1 20041021; DE 60013807 T2 20050414; EP 1177707 A2 20020206; EP 1177707 B1 20040915; JP 2003500916 A 20030107; JP 4868647 B2 20120201; KR 100699454 B1 20070327; KR 20010110799 A 20011213; MX PA01011426 A 20020604
DOCDB simple family (application)
US 0013049 W 20000512; AU 5008100 A 20000512; CN 00807537 A 20000512; DE 60013807 T 20000512; EP 00932346 A 20000512; JP 2000619239 A 20000512; KR 20017013546 A 20011023; MX PA01011426 A 20000512