EP 1433164 A4 20060712 - IMPROVED FRAME ERASURE CONCEALMENT FOR PREDICTIVE SPEECH CODING BASED ON EXTRAPOLATION OF SPEECH WAVEFORM
Title (en)
IMPROVED FRAME ERASURE CONCEALMENT FOR PREDICTIVE SPEECH CODING BASED ON EXTRAPOLATION OF SPEECH WAVEFORM
Title (de)
VERBESSERTES VERBERGEN EINER RAHMENLÖSCHUNG FÜR DIE PRÄDIKTIVE SPRACHCODIERUNG AUF DER BASIS EINER EXTRAPOLATION EINER SPRACHSIGNALFORM
Title (fr)
MASQUAGE AMELIORE DE L'EFFACEMENT DES TRAMES DESTINE AU CODAGE PREDICTIF DE LA PAROLE BASE SUR L'EXTRAPOLATION DE LA FORME D'ONDES DE LA PAROLE
Publication
Application
Priority
- US 0226255 W 20020819
- US 31278901 P 20010817
- US 34437402 P 20020104
- US 18360802 A 20020628
- US 18344802 A 20020628
- US 18345102 A 20020628
Abstract (en)
[origin: WO03023763A1] A method and system are provided for synthesizing a number of corrupted frames output from a decoder (100) including one or more predictive filters. The corrupted frames are representative of one segment of a decoded signal (sq(n)) output from the decoder. The method comprises (202) determining a first preliminary time lag (ppfe1) based upon examining a predetermined number of samples of another segment of the decoded signal and determining a scaling factor (ptfe) associated with the examined number of samples when the first preliminary time lag (ppfe1) is determined. The method also comprises extrapolating one or more replacement frames based upon the first preliminary time lag (ppfe1) and the scaling factor (ptfe).
IPC 8 full level
G10L 19/005 (2013.01)
CPC (source: EP)
G10L 19/005 (2013.01)
Citation (search report)
- [X] EP 0747882 A2 19961211 - AT & T CORP [US]
- [A] WO 9966494 A1 19991223 - COMSAT CORP [US]
- [A] WATKINS C R ET AL: "Improving 16 kb/s G.728 LD-CELP speech coder for frame erasure channels", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 1995. ICASSP-95., 1995 INTERNATIONAL CONFERENCE ON DETROIT, MI, USA 9-12 MAY 1995, NEW YORK, NY, USA,IEEE, US, vol. 1, 9 May 1995 (1995-05-09), pages 241 - 244, XP010625214, ISBN: 0-7803-2431-5
- [A] ANONYMOUS: "Frame or packet loss concealment for the LD-CELP decoder", INTERNATIONAL TELECOMMUNICATION UNION. GENEVA, CH, May 1999 (1999-05-01), XP017400887
- [A] JUIN-HWEY CHEN: "A high-fidelity speech and audio codec with low delay and low complexity", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 2000. ICASSP '00. PROCEEDINGS. 2000 IEEE INTERNATIONAL CONFERENCE ON 5-9 JUNE 2000, PISCATAWAY, NJ, USA,IEEE, vol. 2, 5 June 2000 (2000-06-05), pages 1161 - 1164, XP010504934, ISBN: 0-7803-6293-4
- See references of WO 03023763A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 03023763 A1 20030320; DE 60223580 D1 20071227; DE 60223580 T2 20080918; EP 1433164 A1 20040630; EP 1433164 A4 20060712; EP 1433164 B1 20071114
DOCDB simple family (application)
US 0226255 W 20020819; DE 60223580 T 20020819; EP 02757200 A 20020819