Global Patent Index - EP 1752017 A4

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

EP 1752017 A4 20150819 (EN)

Application

EP 05745659 A 20050527

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)

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