EP 3391370 A1 20181024 - ADAPTIVE CHANNEL-REDUCTION PROCESSING FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL
Title (en)
ADAPTIVE CHANNEL-REDUCTION PROCESSING FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL
Title (de)
ADAPTIVE KANALREDUKTIONSVERARBEITUNG ZUR CODIERUNG EINES MEHRKANALAUDIOSIGNALS
Title (fr)
TRAITEMENT DE RÉDUCTION DE CANAUX ADAPTATIF POUR LE CODAGE D'UN SIGNAL AUDIO MULTICANAL
Publication
Application
Priority
- FR 1562485 A 20151216
- FR 2016053353 W 20161213
Abstract (en)
[origin: WO2017103418A1] The invention relates to a method for parametric encoding of a multi-channel digital audio signal, including a step of encoding (312) a mono signal (M) from channel-reduction processing (307) applied to the multi-channel signal and of encoding spatialisation information (315, 316) of the multi-channel signal. Said method is characterised in that the channel-reduction processing includes the following steps, implemented by a spectral unit of the multi-channel signal: extracting (307a) at least one indicator characterising the channels of the multi-channel digital audio signal; selecting (307b), from a set of channel-reduction processing modes, a channel-reduction processing mode in accordance with the value of the at least one indicator characterising the channels of the multi-channel audio signal. The invention likewise relates to a corresponding encoding device and to a processing method which comprises channel-reduction processing as described.
IPC 8 full level
G10L 19/008 (2013.01)
CPC (source: EP US)
G10L 19/008 (2013.01 - EP US)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017103418 A1 20170622; CN 108369810 A 20180803; CN 108369810 B 20240402; EP 3391370 A1 20181024; FR 3045915 A1 20170623; US 10553223 B2 20200204; US 2019156841 A1 20190523
DOCDB simple family (application)
FR 2016053353 W 20161213; CN 201680072547 A 20161213; EP 16825835 A 20161213; FR 1562485 A 20151216; US 201616063090 A 20161213