EP 2051245 A2 20090422 - Wideband audio signal coding/decoding device and method
Title (en)
Wideband audio signal coding/decoding device and method
Title (de)
Kodierungs-/Dekodierungsvorrichtung und -verfahren für Breitband-Audiosignale
Title (fr)
Dispositif et procédé de codage/décodage de signal audio à large bande
Publication
Application
Priority
KR 2007104402 W 20071017
Abstract (en)
Disclosed is a wideband audio signal coding/decoding device and method that may code a wideband audio signal while maintaining a low bit rate. The wideband audio signal coding device includes an enhancement layer (200) that extracts a first spectrum parameter from an inputted wideband signal having a first bandwidth, quantizes the extracted first spectrum parameter, and converts the extracted first spectrum parameter into a second spectrum parameter; and a coding unit (130) that extracts a narrowband signal from the inputted wideband signal and codes the narrowband signal based on the second spectrum parameter provided from the enhancement layer, wherein the narrowband signal has a second bandwidth smaller than the first bandwidth. The wideband audio signal coding/decoding device and method may code a wideband audio signal while maintaining a low bit rate.
IPC 8 full level
G10L 21/02 (2013.01); G10L 19/06 (2013.01); G10L 19/24 (2013.01); G10L 21/038 (2013.01); G10L 25/12 (2013.01); G10L 25/24 (2013.01)
CPC (source: EP)
G10L 19/06 (2013.01); G10L 21/038 (2013.01); G10L 19/24 (2013.01); G10L 25/12 (2013.01); G10L 25/24 (2013.01)
Citation (applicant)
A. KATAOKA ET AL.: "A 16-kbit/s wideband speech codec scalable with G.729", PROC. EUROSPEECH, September 1997 (1997-09-01), pages 1491 - 1494, XP001045105
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 08105551 A 20081010