EP 1979899 A1 20081015 - METHOD AND ARRANGEMENTS FOR ENCODING AUDIO SIGNALS
Title (en)
METHOD AND ARRANGEMENTS FOR ENCODING AUDIO SIGNALS
Title (de)
VERFAHREN UND ANORDNUNGEN ZUR AUDIOSIGNALKODIERUNG
Title (fr)
PROCÉDÉ ET DISPOSITIFS POUR CODER UN SIGNAL AUDIO
Publication
Application
Priority
EP 2006000811 W 20060131
Abstract (en)
[origin: WO2007087823A1] According to the invention, an excitation signal (EXC) is generated as a result of sampled excitation values in order to excite an audio synthesis filter (ASYN), the generated sampled excitation values being continuously stored in an adaptive codebook (ACB). A noise generator (NOISE) is provided which continuously generates random sampled values. A sequence (EXC_P) of the stored sampled excitation values is selected from the adaptive codebook (ACB) based on a fed audio fundamental frequency parameter (PITCH) by means of which a time gap between the sequence (EXC_P) that is to be selected and the actual time reference is predefined. The excitation signal (EXC) is generated by mixing the selected sequence (EXC_P) with a random sequence (EXC_N) encompassing actual random sampled valued of the noise generator.
IPC 8 full level
G10L 19/12 (2006.01); G10L 21/02 (2006.01); G10L 21/038 (2013.01); G10L 19/00 (2006.01)
CPC (source: EP US)
G10L 19/12 (2013.01 - EP US); G10L 21/038 (2013.01 - EP US); G10L 2019/0001 (2013.01 - EP)
Citation (search report)
See references of WO 2007087823A1
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 2007087823 A1 20070809; CN 101336449 A 20081231; CN 101336449 B 20111019; EP 1979899 A1 20081015; EP 1979899 B1 20150311; US 2009012782 A1 20090108; US 8135584 B2 20120313
DOCDB simple family (application)
EP 2006000811 W 20060131; CN 200680052140 A 20060131; EP 06706507 A 20060131; US 22335906 A 20060131