EP 2080194 B1 20111207 - ATTENUATION OF OVERVOICING, IN PARTICULAR FOR GENERATING AN EXCITATION AT A DECODER, IN THE ABSENCE OF INFORMATION
Title (en)
ATTENUATION OF OVERVOICING, IN PARTICULAR FOR GENERATING AN EXCITATION AT A DECODER, IN THE ABSENCE OF INFORMATION
Title (de)
DÄMPFUNG VON STIMMÜBERLAGERUNG, IM BESONDEREN ZUR ERREGUNGSERZEUGUNG BEI EINEM DECODER IN ABWESENHEIT VON INFORMATIONEN
Title (fr)
ATTENUATION DU SURVOISEMENT, NOTAMMENT POUR LA GENERATION D'UNE EXCITATION AUPRES D'UN DECODEUR, EN ABSENCE D'INFORMATION
Publication
Application
Priority
- FR 2007052188 W 20071017
- FR 0609225 A 20061020
Abstract (en)
[origin: WO2008047051A2] The invention proposes the synthesis of a signal consisting of consecutive blocks. It proposes more particularly, on receipt of such a signal, to replace, by synthesis, lost or erroneous blocks of this signal. It proposes for this purpose an attenuation of the overvoicing during the generation of a signal synthesis. More particularly, a voiced excitation is generated on the basis of the pitch period (T) estimated or transmitted at the previous block, by possibly applying a correction of plus or minus a sample of the duration of this period (counted in terms of number of samples), by constructing groups (A',B',C',D') of at least two samples and inverting positions of samples in the groups, randomly (B',C') or in a forced manner. An over-harmonicity in the excitation generated is thus broken and, thereby, the effect of overvoicing in the synthesis of the signal generated is attenuated.
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/005 (2013.01); G10L 25/90 (2013.01); G10L 19/09 (2013.01)
CPC (source: BR EP KR US)
G10L 19/005 (2013.01 - BR EP US); G10L 19/12 (2013.01 - KR); G10L 25/90 (2013.01 - KR); G10L 19/09 (2013.01 - BR EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008047051 A2 20080424; WO 2008047051 A3 20080612; AT E536613 T1 20111215; BR PI0718423 A2 20131112; BR PI0718423 B1 20200310; CN 101573751 A 20091104; CN 101573751 B 20130925; EP 2080194 A2 20090722; EP 2080194 B1 20111207; ES 2378972 T3 20120419; JP 2010507120 A 20100304; JP 5289319 B2 20130911; KR 101409305 B1 20140618; KR 20090090312 A 20090825; MX 2009004212 A 20090702; RU 2009118918 A 20101127; RU 2437170 C2 20111220; US 2010324907 A1 20101223; US 8417520 B2 20130409
DOCDB simple family (application)
FR 2007052188 W 20071017; AT 07858612 T 20071017; BR PI0718423 A 20071017; CN 200780045853 A 20071017; EP 07858612 A 20071017; ES 07858612 T 20071017; JP 2009532870 A 20071017; KR 20097010004 A 20071017; MX 2009004212 A 20071017; RU 2009118918 A 20071017; US 44628007 A 20071017