EP 1071082 A2 20010124 - Vector quantization codebook generation method
Title (en)
Vector quantization codebook generation method
Title (de)
Verfahren zur Erzeugung eines Vektorquantisierungs-Codebuchs
Title (fr)
Procédé de production d'une table de codes de quantification vectorielle
Publication
Application
Priority
- EP 97911460 A 19971106
- JP 29473896 A 19961107
- JP 31032496 A 19961121
- JP 3458297 A 19970219
- JP 3458397 A 19970219
Abstract (en)
A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds . This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
IPC 1-7
IPC 8 full level
G10L 19/12 (2006.01); G10L 19/135 (2013.01)
CPC (source: EP)
G10L 19/135 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1071082 A2 20010124; EP 1071082 A3 20010131; EP 1071082 B1 20020508; EP 1132894 A2 20010912; EP 1132894 A3 20010919; EP 1132894 B1 20030502
DOCDB simple family (application)
EP 00121467 A 19971106; EP 01108523 A 19971106