EP 0602826 A2 19940622 - Time shifting for analysis-by-synthesis coding.
Title (en)
Time shifting for analysis-by-synthesis coding.
Title (de)
Zeitverschiebung zur Kodierung von Analyse durch Synthese.
Title (fr)
Décalement du temps pour codage avec analyse par synthèse.
Publication
Application
Priority
US 99030992 A 19921214
Abstract (en)
A generalized analysis-by-synthesis technique is disclosed. Illustratively, a section of an original signal containing a local maximum energy is identified. A plurality of segments of the original signal containing the local maximum energy are selected based on a plurality of time shifts. These segments are termed "trial original signals." Each trial original signal is compared to a synthesized signal from an adaptive codebook and a measure of similarity (e.g., a cross-correlation) between these signals is evaluated. A trial original signal for use in coding is determined based on one or more evaluated measures of similarity. A signal reflecting a coded representation of the original signal is generated based on one or more determined trial original signals. The signal reflecting a coded representation of the original signal may be provided by an analysis-by-synthesis coder, such as a CELP coder. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/04 (2006.01); G10L 19/12 (2006.01)
CPC (source: EP)
G10L 19/12 (2013.01); G10L 25/06 (2013.01); G10L 2019/0002 (2013.01); G10L 2019/0011 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0602826 A2 19940622; EP 0602826 A3 19941207; EP 0602826 B1 19990825; CA 2102080 A1 19940615; CA 2102080 C 19980728; DE 69326126 D1 19990930; DE 69326126 T2 20000706; ES 2136649 T3 19991201; JP 3770925 B2 20060426; JP H06214600 A 19940805; MX 9307743 A 19940630
DOCDB simple family (application)
EP 93309580 A 19931201; CA 2102080 A 19931029; DE 69326126 T 19931201; ES 93309580 T 19931201; JP 34203493 A 19931214; MX 9307743 A 19931208