EP 0899720 A2 19990303 - Quantization of linear prediction coefficients
Title (en)
Quantization of linear prediction coefficients
Title (de)
Quantisierung der linearen Prädiktionskoeffizienten
Title (fr)
Quantisation des coefficients de prédiction linéaire
Publication
Application
Priority
US 5711497 P 19970828
Abstract (en)
A new method for quantization of the LPC coefficients in a speech coder includes a new weighted error measure including every frame sampling an impulse response from LPC filter (21) of said coder, filtering the samples using a perceptual weighting filter (47) and processing in a computer (39) to calculate autocorrelation function of the weighted impulse response, computing Jacobian matrix for LSF (Line Spectral Frequency), computing correlation of rows of Jacobian matrix and calculating LSF weights by multiplying correlation matrices. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/02 (2006.01); G10L 19/06 (2006.01); H03M 7/30 (2006.01)
CPC (source: EP)
G10L 19/038 (2013.01); G10L 19/07 (2013.01); G10L 2019/0014 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0899720 A2 19990303; EP 0899720 A3 19990915; EP 0899720 B1 20041215; DE 69828119 D1 20050120; JP H11143498 A 19990528
DOCDB simple family (application)
EP 98306906 A 19980827; DE 69828119 T 19980827; JP 24205898 A 19980827