EP 1035538 A3 20030423 - Multimode quantizing of the prediction residual in a speech coder
Title (en)
Multimode quantizing of the prediction residual in a speech coder
Title (de)
Multimodale Quantisierung des Prädiktionsfehlers in einem Sprachkodierer
Title (fr)
Quantisation multimode du résidu de prédiction dans un codeur de parole
Publication
Application
Priority
- US 12411299 P 19990312
- US 12408999 P 19990312
Abstract (en)
[origin: EP1035538A2] Linear predictive system with classification of LP residual Fourier coefficients into two or more overlapping classes, and each class has its own vector quantization codebook(s). And modified use of strong and weak predictors to replace a strong predictor following a weak predictor with a weak predictor to insure attenuation of error propagation as arise from frame erasures. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/18 (2013.01); H03M 7/30 (2006.01); H04B 14/04 (2006.01)
CPC (source: EP)
G10L 19/18 (2013.01)
Citation (search report)
- [XA] US 5749065 A 19980505 - NISHIGUCHI MASAYUKI [JP], et al
- [A] EP 0751494 A1 19970102 - SONY CORP [JP]
- [A] MARSTON D F: "Gender adapted speech coding", ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 1998. PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON SEATTLE, WA, USA 12-15 MAY 1998, NEW YORK, NY, USA,IEEE, US, 12 May 1998 (1998-05-12), pages 357 - 360, XP010279165, ISBN: 0-7803-4428-6
- [PX] STACHURSKI JACEK ET AL: "High quality MELP coding at bit-rates around 4 kb/s", PROCEEDINGS OF THE 1999 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP-99);PHOENIX, AZ, USA MAR 15-MAR 19 1999, vol. 1, 1999, ICASSP IEEE Int Conf Acoust Speech Signal Process Proc;ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1999 IEEE, Piscataway, NJ, USA, pages 485 - 488, XP002230714
- [A] ERIKSSON T ET AL: "Exploiting interframe correlation in spectral quantization: a study of different memory VQ schemes", 1996 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING CONFERENCE PROCEEDINGS (CAT. NO.96CH35903), 1996 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING CONFERENCE PROCEEDINGS, ATLANTA, GA, USA, 7-10 M, 1996, New York, NY, USA, IEEE, USA, pages 765 - 768 vol. 2, XP002230715, ISBN: 0-7803-3192-3
- [A] MCCREE A ET AL: "A 1.7 kb/s MELP coder with improved analysis and quantization", ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 1998. PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON SEATTLE, WA, USA 12-15 MAY 1998, NEW YORK, NY, USA,IEEE, US, 12 May 1998 (1998-05-12), pages 593 - 596, XP010279196, ISBN: 0-7803-4428-6
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1035538 A2 20000913; EP 1035538 A3 20030423; EP 1035538 B1 20050727; DE 60021455 D1 20050901; DE 60021455 T2 20060524; JP 2000305597 A 20001102
DOCDB simple family (application)
EP 00200874 A 20000313; DE 60021455 T 20000313; JP 2000067301 A 20000310