EP 0801789 A1 19971022 - SPEECH CODING METHOD USING SYNTHESIS ANALYSIS
Title (en)
SPEECH CODING METHOD USING SYNTHESIS ANALYSIS
Title (de)
VERFAHREN ZUR SPRACHKODIERUNG MITTELS ANALYSE DURCH SYNTHESE
Title (fr)
PROCEDE DE CODAGE DE PAROLE A ANALYSE PAR SYNTHESE
Publication
Application
Priority
- FR 9600005 W 19960103
- FR 9500124 A 19950106
Abstract (en)
[origin: EP0721180A1] The method involves using a digitiser (18) to form a speech signal into successive frames divided into typically 4 subframes of 40 samples of 16 bits. A coder (16) delivers a binary sequence at a substantially slower rate to a channel encoder (22), introducing error detection and/or correction bits. Each frame is analysed by short-term linear prediction (26) to determine coeffts. of a short-term synthesis filter. For each subframe, an excitation sequence is determined which after filtering produces a synthetic signal representing the speech. The subframe is divided into segments corresp. to pulses of stochastic excitation (40), and the positions of these pulses are found so that there is at most one in each segment.
IPC 1-7
IPC 8 full level
G10L 19/10 (2013.01)
CPC (source: EP US)
G10L 19/10 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0721180 A1 19960710; EP 0721180 B1 19990818; AT E174147 T1 19981215; AT E183600 T1 19990915; AU 4490296 A 19960724; CN 1134761 C 20040114; CN 1173940 A 19980218; DE 69601068 D1 19990114; DE 69601068 T2 19990715; DE 69603755 D1 19990923; DE 69603755 T2 20000706; EP 0801789 A1 19971022; EP 0801789 B1 19981202; FR 2729244 A1 19960712; FR 2729244 B1 19970328; US 5899968 A 19990504; WO 9621219 A1 19960711
DOCDB simple family (application)
EP 96400028 A 19960105; AT 96400028 T 19960105; AT 96901009 T 19960103; AU 4490296 A 19960103; CN 96191795 A 19960103; DE 69601068 T 19960103; DE 69603755 T 19960105; EP 96901009 A 19960103; FR 9500124 A 19950106; FR 9600005 W 19960103; US 86079997 A 19971014