EP 1172803 A3 20040114 - Vector quantization system and method of operation
Title (en)
Vector quantization system and method of operation
Title (de)
System zur Vektorquantisierung und Betriebsverfahren
Title (fr)
Système de quantification vectorielle et méthode d'opération
Publication
Application
Priority
GB 0017145 A 20000713
Abstract (en)
[origin: EP1172803A2] A method of providing robust quantization of speech spectral parameters tolerant to spectral balance and speaker variations, the method including the steps of, for each of a plurality of line spectral frequencies (LSFs) of a speech spectrum, quantizing (14) the displacement (12) of the LSF from an estimate (42) of its long-term mean, reconstructing (22,34) an estimate of the LSF from the quantized displacement and the long-term LSF mean estimate, and filtering (26,30,32) the reconstructed LSF estimate, thereby providing a subsequent long-term LSF mean estimate. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/07 (2013.01)
CPC (source: EP)
G10L 19/07 (2013.01)
Citation (search report)
- [X] US 5966688 A 19991012 - NANDKUMAR SRINIVAS [US], et al
- [A] OHMURO H ET AL: "VECTOR QUANTIZATION OF LSP PARAMETERS USING MOVING AVERAGE INTERFRAME PREDICTION", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART III - FUNDAMENTAL ELECTRONIC SCIENCE, SCRIPTA TECHNICA. NEW YORK, US, vol. 77, no. 10, PART 3, 1 October 1994 (1994-10-01), pages 12 - 25, XP000527379, ISSN: 1042-0967
- [A] CHO INHWAN ET AL: "Predictive pyramid vector quantisation of LSF parameters", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 34, no. 8, 16 April 1998 (1998-04-16), pages 735 - 736, XP006009612, ISSN: 0013-5194
- [A] SKOGLUND J ET AL: "PREDICTIVE VQ FOR NOISY CHANNEL SPECTRUM CODING: AR OR MA?", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP'97), MUNICH, GERMANY, vol. 2, 21 April 1997 (1997-04-21) - 24 April 1997 (1997-04-24), IEEE COMP. SOC. PRESS, USA, pages 1351 - 1354, XP000822706, ISBN: 0-8186-7920-4
- [DA] AARSKOG A: "A LONG-TERM PREDICTIVE ADPCM CODER WITH SHORT-TERM PREDICTION AND VECTOR QUANTIZATION", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH & SIGNAL PROCESSING (ICASSP'91), TORONTO, CANADA, vol. 1, 14 May 1991 (1991-05-14) - 17 May 1991 (1991-05-17), IEEE, New York, USA, pages 37 - 40, XP000245161, ISBN: 0-7803-0003-3
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1172803 A2 20020116; EP 1172803 A3 20040114; GB 0017145 D0 20000830; GB 2364870 A 20020206
DOCDB simple family (application)
EP 01116530 A 20010709; GB 0017145 A 20000713