EP 2277172 B1 20120516 - CONCEALMENT OF TRANSMISSION ERROR IN A DIGITAL SIGNAL IN A HIERARCHICAL DECODING STRUCTURE
Title (en)
CONCEALMENT OF TRANSMISSION ERROR IN A DIGITAL SIGNAL IN A HIERARCHICAL DECODING STRUCTURE
Title (de)
VERBERGUNG VON ÜBERTRAGUNGSFEHLERN IN EINEM DIGITALSIGNAL IN EINER HIERARCHISCHEN DECODIERUNGSSTRUKTUR
Title (fr)
DISSIMULATION D'ERREUR DE TRANSMISSION DANS UN SIGNAL AUDIONUMERIQUE DANS UNE STRUCTURE DE DECODAGE HIERARCHIQUE
Publication
Application
Priority
- FR 2009050489 W 20090320
- FR 0852043 A 20080328
Abstract (en)
[origin: WO2009125114A1] The invention relates to a method of concealing a transmission error in a digital signal chopped into a plurality of successive frames associated with different time intervals in which, on reception, the signal is liable to comprise erased frames and valid frames, the valid frames comprising information (inf.) relating to the concealment of frame loss. The method is implemented during a hierarchical decoding using a core decoding and a transform-based decoding using windows with small delay introducing a time delay of less than a frame with respect to the core decoding. To replace at least the last frame erased before a valid frame, the method comprises a step (23) of concealing a first set of missing samples for the erased frame, implemented in a first time interval; a step (25) of concealing a second set of missing samples taking into account information of said valid frame and implemented in a second time interval; and a step (29) of transition between the first and the second set of missing samples to obtain at least part of the missing frame.
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/005 (2013.01); H04L 1/00 (2006.01); G10L 19/02 (2013.01); G10L 19/24 (2013.01)
CPC (source: EP US)
G10L 19/005 (2013.01 - EP US); G10L 19/0212 (2013.01 - EP US); G10L 19/24 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
FR 2929466 A1 20091002; BR PI0910327 A2 20151006; BR PI0910327 B1 20201020; CN 101981615 A 20110223; CN 101981615 B 20120829; EP 2277172 A1 20110126; EP 2277172 B1 20120516; ES 2387943 T3 20121004; JP 2011515712 A 20110519; JP 5247878 B2 20130724; KR 101513184 B1 20150417; KR 20100134709 A 20101223; RU 2010144057 A 20120510; RU 2496156 C2 20131020; US 2011007827 A1 20110113; US 8391373 B2 20130305; WO 2009125114 A1 20091015
DOCDB simple family (application)
FR 0852043 A 20080328; BR PI0910327 A 20090320; CN 200980110725 A 20090320; EP 09730641 A 20090320; ES 09730641 T 20090320; FR 2009050489 W 20090320; JP 2011501274 A 20090320; KR 20107024313 A 20090320; RU 2010144057 A 20090320; US 92035209 A 20090320