EP 2720223 A2 20140416 - AUDIO SIGNAL PROCESSING METHOD, AUDIO ENCODING APPARATUS, AUDIO DECODING APPARATUS, AND TERMINAL ADOPTING THE SAME
Title (en)
AUDIO SIGNAL PROCESSING METHOD, AUDIO ENCODING APPARATUS, AUDIO DECODING APPARATUS, AND TERMINAL ADOPTING THE SAME
Title (de)
VERFAHREN ZUR AUDIOSIGNALVERARBEITUNG, AUDIOKODIERUNGSVORRICHTUNG, AUDIODEKODIERUNGSVORRICHTUNG UND ENDGERÄT DAFÜR
Title (fr)
PROCÉDÉ DE TRAITEMENT DE SIGNAUX AUDIO, APPAREIL DE CODAGE AUDIO, APPAREIL DE DÉCODAGE AUDIO ET TERMINAL UTILISANT LEDIT PROCÉDÉ
Publication
Application
Priority
- US 201161494050 P 20110607
- KR 2012004508 W 20120607
Abstract (en)
An audio signal processing method includes: when a first plurality of input channels are down-mixed to a second plurality of output channels, comparing locations of the first plurality of input channels with locations of the second plurality of output channels; down-mixing channels of the first plurality of input channels, which have the same locations as those of the second plurality of output channels, to channels at the same locations among the second plurality of output channels; searching for at least one adjacent channel for each of the remaining channels among the first plurality of input channels; determining a weighting factor for the searched adjacent channel in consideration of at least one of a distance between channels, a correlation between signals, and an error during restoration; and down-mixing each of the remaining channels among the first plurality of input channels to the adjacent channel based on the determined weighting factor.
IPC 8 full level
G10L 19/02 (2013.01); H03M 7/30 (2006.01)
CPC (source: EP KR)
G10L 19/008 (2013.01 - EP KR); H04S 3/00 (2013.01 - KR)
Citation (search report)
See references of WO 2012169808A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2720223 A2 20140416; CN 103733256 A 20140416; KR 20140037118 A 20140326; WO 2012169808 A2 20121213; WO 2012169808 A3 20130307
DOCDB simple family (application)
EP 12797100 A 20120607; CN 201280038627 A 20120607; KR 2012004508 W 20120607; KR 20137032698 A 20120607