Processing

Please wait...

Settings

Settings

Goto Application

1. WO2002037477 - SPEECH CODEC AND METHOD FOR GENERATING A VECTOR CODEBOOK AND ENCODING/DECODING SPEECH SIGNALS

Publication Number WO/2002/037477
Publication Date 10.05.2002
International Application No. PCT/EP2001/012403
International Filing Date 22.10.2001
Chapter 2 Demand Filed 27.05.2002
IPC
G10L 19/07 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
04using predictive techniques
06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
07Line spectrum pair vocoders
CPC
G10L 19/07
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
04using predictive techniques
06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
07Line spectrum pair [LSP] vocoders
G10L 2019/0005
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
0001Codebooks
0004Design or structure of the codebook
0005Multi-stage vector quantisation
G10L 2019/0007
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
0001Codebooks
0007Codebook element generation
Applicants
  • MOTOROLA INC [US]/[US] (AllExceptUS)
  • GIBBS, Jonathan, Alastair [GB]/[GB] (UsOnly)
  • HOSKIN, James, Malcolm [GB]/[GB] (UsOnly)
Inventors
  • GIBBS, Jonathan, Alastair
  • HOSKIN, James, Malcolm
Agents
  • TRELEVEN, Colin
Priority Data
0026463.030.10.2000GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SPEECH CODEC AND METHOD FOR GENERATING A VECTOR CODEBOOK AND ENCODING/DECODING SPEECH SIGNALS
(FR) CODEC VOCAL ET PROCEDE DE GENERATION D'UN CODE VECTORIEL ET DE CODAGE/DECODAGE DE SIGNAUX VOCAUX
Abstract
(EN)
A speech coder (100, 200) for a speech communications unit includes a set of at least two embedded vector codebooks capable of representing an input speech signal by a series of vectors. The at least two embedded vector codebooks (256, 262) share at least some common vectors of the series of vectors. The speech coder includes means for classifying (252) an input speech signal by selecting one of the at least two embedded vector codebooks in conjunction with at least a portion of at least one other embedded vector codebook of the at least two embedded vector codebooks (256, 262) to represent the input speech signal.
(FR)
Un codeur vocal (100, 200) destiné à une unité de communication vocale comprend un ensemble d'au moins deux codes vectoriels intégrés capables de représenter un signal vocal d'entrée par une série de vecteurs. Les deux codes vectoriels intégrés (256, 262) au moins partagent au moins certains vecteurs communs de la série de vecteurs. Le codeur vocal comprend un moyen de classification (252) d'un signal vocal d'entrée par sélection d'un des deux codes vectoriels intégrés au moins, conjointement avec au moins une partie d'au moins un autre code vectoriel intégré des deux codes vectoriels intégrés (256, 262) au moins, afin de représenter le signal vocal d'entrée.
Also published as
Latest bibliographic data on file with the International Bureau