EP 1852851 A1 20071107 - AN ENHANCED AUDIO ENCODING/DECODING DEVICE AND METHOD
Title (en)
AN ENHANCED AUDIO ENCODING/DECODING DEVICE AND METHOD
Title (de)
VERBESSERTE AUDIO-CODIERUNGS-/-DECODIERUNGSEINRICHTUNG UND VERFAHREN
Title (fr)
DISPOSITIF ET PROCEDE DE CODAGE/DECODAGE AUDIO AMELIORES
Publication
Application
Priority
- CN 2005000441 W 20050401
- CN 200410030945 A 20040401
Abstract (en)
An enhanced audio encoding device, which is consisted of a signal type analyzing module, a psychoacoustical analyzing module, a time-frequency mapping module, a quantization and entropy encoding module, a frequency-domain linear prediction and vector quantization module, and a bit stream multiplexing module, in which the singal type analyzing module is configured to anaylze the signal type of the input audio signal and output to the psychoacoustical analyzing module, the time-frequency mapping module and the bit stream multiplexing module, the frequency-domain linear prediction and vector quantization module is configured to perform a linear prediction of the frequency-domain coefficients and a multi-level vector quantization, and output the residual sequences to the quantization and entropy encoding module while outputting a lateral information to the bit stream multiplexing module. The device is adapted to perform a compressive encoding of the audio signal with high fidelity, which is sampled at multi sampling rates and has multi audio channel configurations, the device can support the audio signal whose sampling rate is between 8kHz and 192kHz and all possible audio channel configurations, and the range of the objective code rate of the audio encode/decode is very wide.
IPC 8 full level
G10L 19/02 (2006.01); G10L 19/038 (2013.01); G10L 19/04 (2006.01); G10L 19/028 (2013.01)
CPC (source: EP)
G10L 19/038 (2013.01); G10L 19/028 (2013.01)
Citation (search report)
See references of WO 2005096274A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05738242 A 20050401; CN 2005000441 W 20050401