EP 0539103 A2 19930428 - Generalized analysis-by-synthesis speech coding method and apparatus.
Title (en)
Generalized analysis-by-synthesis speech coding method and apparatus.
Title (de)
Verallgemeinerte Analyse-durch-Synthese Methode und Einrichtung zur Sprachkodierung.
Title (fr)
Méthode généralisée d'analyse par synthèse et dispositif pour le codage de la parole.
Publication
Application
Priority
US 78268691 A 19911025
Abstract (en)
A generalized analysis-by-synthesis method and apparatus are disclosed. A plurality of trial original signals are generated based on an original signal for coding. The trial original signals are constrained to be perceptually similar to the original signal. Trial original signals are coded to produce one or more parameters representative thereof. Estimates of the trial original signals are synthesized from these parameters. Errors between the trial original signals and the synthesized estimates are determined. A coded representation of the original signal is determined which comprises parameters of the trial original signal having an associated error which satisfies an error evaluation process. Trial original signals may be generated by application of time-warps or time-shifts to the original signal. Coding of a trial original signal may be performed with conventional analysis-by-synthesis coding such as code-excited linear prediction coding (CELP). A minimum square error process may serve as the error criterion. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/12 (2013.01); H03M 7/30 (2006.01)
CPC (source: EP)
G10L 19/12 (2013.01); G10L 25/06 (2013.01); G10L 2019/0011 (2013.01); G10L 2019/0012 (2013.01); G10L 2019/0013 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0539103 A2 19930428; EP 0539103 A3 19930811; EP 0539103 B1 19980429; DE 69225293 D1 19980604; DE 69225293 T2 19980910; ES 2115646 T3 19980701; JP 3662597 B2 20050622; JP H05232995 A 19930910
DOCDB simple family (application)
EP 92309442 A 19921016; DE 69225293 T 19921016; ES 92309442 T 19921016; JP 28480892 A 19921023