EP 1825461 B1 20080903 - METHOD AND APPARATUS FOR ARTIFICIALLY EXPANDING THE BANDWIDTH OF VOICE SIGNALS
Title (en)
METHOD AND APPARATUS FOR ARTIFICIALLY EXPANDING THE BANDWIDTH OF VOICE SIGNALS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR KÜNSTLICHEN ERWEITERUNG DER BANDBREITE VON SPRACHSIGNALEN
Title (fr)
PROCEDE ET DISPOSITIF POUR ELARGIR ARTIFICIELLEMENT LA LARGEUR DE BANDE DE SIGNAUX VOCAUX
Publication
Application
Priority
- EP 2006063742 W 20060630
- DE 102005032724 A 20050713
Abstract (en)
[origin: US2008126081A1] A method for the artificial extension of the bandwidth of speech signals involves: a) Provision of a wideband input speech signal (s<SUB>wb</SUB><SUP>i</SUP>(k)); b) Determination of the signal components (s<SUB>eb</SUB>(k)) of the wideband input speech signal (s<SUB>wb</SUB><SUP>i</SUP>(k)) required for the bandwidth extension from an extension band from the wideband input speech signal (s<SUB>wb</SUB><SUP>i</SUP>(k)); c) Determination of the temporal envelopes of the signal components (s<SUB>eb</SUB>(k)) determined for the bandwidth extension; d) Determination of the spectral envelopes of the signal components (s<SUB>eb</SUB>(k)) determined for bandwidth extension; e) Encoding of the information for the temporal envelopes and the spectral envelopes, and provision of the encoded information by carrying out the extension of the bandwidth; f) Decoding of the encoded information and generation of the temporal envelopes and the spectral envelopes from the encoded information for the production of a bandwidth-extended output speech signal (s<SUB>wb</SUB><SUP>o</SUP>(k)).
IPC 8 full level
G10L 21/02 (2006.01); G10L 21/038 (2013.01)
CPC (source: EP KR US)
G10L 19/02 (2013.01 - KR); G10L 19/06 (2013.01 - KR); G10L 21/02 (2013.01 - KR); G10L 21/038 (2013.01 - 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 NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2008126081 A1 20080529; US 8265940 B2 20120911; AT E407424 T1 20080915; CA 2580622 A1 20070113; CA 2580622 C 20110510; CN 100568345 C 20091209; CN 101061535 A 20071024; CN 101676993 A 20100324; CN 101676993 B 20120530; DE 102005032724 A1 20070201; DE 102005032724 B4 20091008; DE 502006001491 D1 20081016; DK 1825461 T3 20090126; EP 1825461 A1 20070829; EP 1825461 B1 20080903; ES 2309969 T3 20081216; JP 2008513848 A 20080501; JP 4740260 B2 20110803; KR 100915733 B1 20090904; KR 20070090143 A 20070905; PL 1825461 T3 20090227; WO 2007073949 A1 20070705
DOCDB simple family (application)
US 66259206 A 20060630; AT 06840370 T 20060630; CA 2580622 A 20060630; CN 200680000799 A 20060630; CN 200910208032 A 20060630; DE 102005032724 A 20050713; DE 502006001491 T 20060630; DK 06840370 T 20060630; EP 06840370 A 20060630; EP 2006063742 W 20060630; ES 06840370 T 20060630; JP 2007551692 A 20060630; KR 20077005783 A 20060630; PL 06840370 T 20060630