EP 1177707 B1 20040915 - 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)
Designated contracting state (EPC)
DE FR GB IT
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