EP 1192619 A1 20020403 - AUDIO CODING AND DECODING BY INTERPOLATION
Title (en)
AUDIO CODING AND DECODING BY INTERPOLATION
Title (de)
AUDIO-KODIERUNG, DEKODIERUNG ZUR INTERPOLATION
Title (fr)
CODAGE ET DECODAGE AUDIO PAR INTERPOLATION
Publication
Application
Priority
- FR 0001906 W 20000704
- FR 9908635 A 19990705
Abstract (en)
[origin: WO0103118A1] The invention concerns a method wherein a decoder synthesises a set of successive frames of N samples of an audio signal from encoding data included in a digital flow received from the encoder and comprising, for only one subset of frames, data representing spectral amplitudes of the audio signal. The decoder determines for each of the frames of said subset, on the basis of the encoding data, the cepstral coefficients (cx_q[n]) representing some at least of said spectral amplitudes whereas for the frames not forming part of said subset, it interpolates said cepstral coefficients, and generates by means of said interpolated cepstral coefficients (cx[n-1/2] a spectral estimate of the audio signal which it transforms in the temporal domain to obtain the synthesised frame.
IPC 1-7
IPC 8 full level
G10L 19/02 (2013.01); G10L 19/10 (2013.01)
CPC (source: EP)
G10L 19/02 (2013.01); G10L 19/10 (2013.01)
Citation (search report)
See references of WO 0103118A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL
DOCDB simple family (publication)
WO 0103118 A1 20010111; AT E277403 T1 20041015; AU 6292000 A 20010122; DE 60014085 D1 20041028; EP 1192619 A1 20020403; EP 1192619 B1 20040922; FR 2796191 A1 20010112; FR 2796191 B1 20011005
DOCDB simple family (application)
FR 0001906 W 20000704; AT 00949621 T 20000704; AU 6292000 A 20000704; DE 60014085 T 20000704; EP 00949621 A 20000704; FR 9908635 A 19990705