EP 1527440 A1 20050504 - SPEECH COMMUNICATION UNIT AND METHOD FOR ERROR MITIGATION OF SPEECH FRAMES
Title (en)
SPEECH COMMUNICATION UNIT AND METHOD FOR ERROR MITIGATION OF SPEECH FRAMES
Title (de)
SPRACHÜBERTRAGUNGSSYSTEM UND VERFAHREN FÜR FEHLERABSCHWÄCHUNG VON SPRACHRAHMEN
Title (fr)
UNITE DE COMMUNICATION VOCALE ET PROCEDE D'ATTENUATION D'ERREURS DANS LES TRAMES VOCALES
Publication
Application
Priority
- EP 0305076 W 20030512
- GB 0217729 A 20020731
Abstract (en)
[origin: GB2391440A] A speech communication unit comprises a speech encoder capable of representing an input speech signal, e.g. from microphone 202. The speech encoder is coupled to a main transmission path (281), for transmitting a number of speech frames to a speech decoder, and a virtual transmission path (282) for transmitting one or more references for a number of speech frames transmitted in the transmission path (281). The one or more references identify an alternative speech frame within the number of speech frames transmitted on the transmission path (281) to be used as a replacement frame when a frame is received including an error. A suitable alternative speech frame is one that exhibits a similar characteristic to the frame to be replaced, based on evaluation of a minimum weighted error. The speech communication unit provides the advantage that a more accurate replacement frame mechanism is provided, thereby reducing the risk of undesirable artefacts being audible in recovered speech frames.
IPC 1-7
IPC 8 full level
G10L 19/005 (2013.01); H04L 1/00 (2006.01)
CPC (source: EP KR)
G10L 19/005 (2013.01 - EP KR); G10L 19/04 (2013.01 - KR); H04L 1/00 (2013.01 - KR); H04L 1/0083 (2013.01 - EP); H04L 27/00 (2013.01 - KR)
Citation (search report)
See references of WO 2004015690A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
GB 0217729 D0 20020911; GB 2391440 A 20040204; GB 2391440 B 20050216; AU 2003240644 A1 20040225; CN 100349395 C 20071114; CN 1672193 A 20050921; EP 1527440 A1 20050504; JP 2005534984 A 20051117; KR 20050027272 A 20050318; WO 2004015690 A1 20040219
DOCDB simple family (application)
GB 0217729 A 20020731; AU 2003240644 A 20030512; CN 03818272 A 20030512; EP 0305076 W 20030512; EP 03730037 A 20030512; JP 2004526664 A 20030512; KR 20057001824 A 20050131