EP 0545386 B1 19990407 - Method for speech coding and voice-coder
Title (en)
Method for speech coding and voice-coder
Title (de)
Methode zur Sprachkodierung und Sprachkodierer
Title (fr)
Méthode pour le codage de la parole et codeur de parole
Publication
Application
Priority
JP 31931491 A 19911203
Abstract (en)
[origin: EP0545386A2] A method for speech coding and a voice-coder for coding speech signals divided into frames spaced with a constant interval are disclosed. An adaptive codebook storing excitation signal determined in advance and a plurality of excitation codebooks for multi-stage vector quantization are provided. Each frame is divided into subframes. For each subframe, a candidate of a first predetermined number of adaptive codevectors is selected, and then candidates of each predetermined number of excitation codevectors are selected from each excitation codebook, respectively, by using the candidate of the adaptive codevector. Finally, a combination of the adaptive codevector and each of the excitation codevector is selected from the candidates of the adaptive codevector and each of the sound codevectors. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/038 (2013.01); G10L 19/04 (2013.01); G10L 19/08 (2013.01); G10L 19/12 (2013.01); H03M 7/30 (2006.01); H04B 14/04 (2006.01)
CPC (source: EP)
G10L 19/12 (2013.01); G10L 2019/0003 (2013.01); G10L 2019/0005 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0545386 A2 19930609; EP 0545386 A3 19930818; EP 0545386 B1 19990407; CA 2084338 A1 19930604; CA 2084338 C 19970304; DE 69228858 D1 19990512; DE 69228858 T2 19990819; JP 3089769 B2 20000918; JP H05216500 A 19930827
DOCDB simple family (application)
EP 92120573 A 19921202; CA 2084338 A 19921202; DE 69228858 T 19921202; JP 31931491 A 19911203