Global Patent Index - EP 0782128 B1

EP 0782128 B1 20000621 - Method of analysing by linear prediction an audio frequency signal, and its application to a method of coding and decoding an audio frequency signal

Title (en)

Method of analysing by linear prediction an audio frequency signal, and its application to a method of coding and decoding an audio frequency signal

Title (de)

Verfahren zur Analyse eines Audiofrequenzsignals durch lineare Prädiktion, und Anwendung auf ein Verfahren zur Kodierung und Dekodierung eines Audiofrequenzsignals

Title (fr)

Procédé d'analyse par prédiction linéaire d'un signal audiofréquence, et procédés de codage et de décodage d'un signal audiofréquence en comportant application

Publication

EP 0782128 B1 20000621 (FR)

Application

EP 96402715 A 19961212

Priority

FR 9514925 A 19951215

Abstract (en)

[origin: EP0782128A1] The method involves determining the short term spectral parameters for an audio frequency signal (S0(n)) using q successive prediction stages p where q is larger than or equal to p. Each stage performs analysis of the coefficients of order Mp=a1<p>...aMp<p> to analyse the input signal S0(n) and the signal sp(n) of a stage (p+1) using a filter transfer function: Ap(z)=1+Sumä(from i=1 to mp))ai<p>*z<(-1)>ü The number of linear predictive coefficients is increased for the following stage.

IPC 1-7

G10L 19/06

IPC 8 full level

G10L 19/06 (2013.01); H03H 17/02 (2006.01); H03M 7/30 (2006.01)

CPC (source: EP KR US)

G10L 19/06 (2013.01 - EP KR US)

Designated contracting state (EPC)

DE GB IT

DOCDB simple family (publication)

EP 0782128 A1 19970702; EP 0782128 B1 20000621; CN 1159691 A 19970917; DE 69608947 D1 20000727; DE 69608947 T2 20010201; FR 2742568 A1 19970620; FR 2742568 B1 19980213; JP 3678519 B2 20050803; JP H09212199 A 19970815; KR 100421226 B1 20040719; KR 970050107 A 19970729; US 5787390 A 19980728

DOCDB simple family (application)

EP 96402715 A 19961212; CN 96121556 A 19961213; DE 69608947 T 19961212; FR 9514925 A 19951215; JP 33614096 A 19961216; KR 19960065696 A 19961214; US 76345796 A 19961211