EP 1752017 A4 20150819 - APPARATUS AND METHOD OF REPRODUCING WIDE STEREO SOUND
Title (en)
APPARATUS AND METHOD OF REPRODUCING WIDE STEREO SOUND
Title (de)
VORRICHTUNG UND VERFAHREN ZUR WIEDERGABE VON BREIT-STEREOTON
Title (fr)
APPAREIL ET PROCEDE DE REPRODUCTION D'UN SON STEREO LARGE
Publication
Application
Priority
- KR 2005001559 W 20050527
- US 57661804 P 20040604
- KR 20040043077 A 20040611
- US 57886004 P 20040614
Abstract (en)
[origin: WO2005120133A1] An apparatus and a method of reproducing a wide stereo sound by widening a stereo sound output by an audio reproducing apparatus using only two closely disposed channel speakers include a widening filtering operation and a direct filtering operation. In the widening filtering operation, virtual sound sources for arbitary locations are formed from a stereo-channel audio signal using head related transfer functions measured at predetermined locations, and crosstalk is cancelled from the virtual sound sources using filter coefficients in which the head related transfer functions are reflected. In the direct filtering operation, signal characteristics of the stereo-channel audio signal are adjusted based on the crosstalk-cancelled virtual sound sources.
IPC 8 full level
H04S 1/00 (2006.01); H04S 3/00 (2006.01); H04S 5/00 (2006.01)
CPC (source: EP)
H04S 1/002 (2013.01); H04S 5/00 (2013.01); H04S 2400/01 (2013.01); H04S 2420/01 (2013.01)
Citation (search report)
- [XAI] JP H08317500 A 19961129 - KAWAI MUSICAL INSTR MFG CO
- [XAI] JP 2001028800 A 20010130 - SAMSUNG ELECTRONICS CO LTD
- [XI] US 5999630 A 19991207 - IWAMATSU MASAYUKI [JP]
- [XA] EP 0955789 A2 19991110 - NOKIA DISPLAY PRODUCTS OY [FI]
- [IA] US 6243476 B1 20010605 - GARDNER WILLIAM G [US]
- [A] US 6307941 B1 20011023 - TANNER JR THEODORE CALHOUN [US], et al
- [A] DE 3305940 A1 19840830 - TELEFUNKEN FERNSEH & RUNDFUNK [DE]
- See references of WO 2005120133A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 2005120133 A1 20051215; EP 1752017 A1 20070214; EP 1752017 A4 20150819; JP 2008502200 A 20080124
DOCDB simple family (application)
KR 2005001559 W 20050527; EP 05745659 A 20050527; JP 2007514901 A 20050527