摘要 |
Modeling a target spectrum (S) is provided by determining (21) filter parameters (pi,qi) of a filter which has a frequency response approximating the target spectrum (S), wherein the target spectrum is split in at least a first part and a second part, a first modeling operation is used on the first part of the target spectrum to obtain auto-regressive parameters, a second modeling operation is used on the second part of the target spectrum to obtain moving-average parameters, and the auto-regressive parameters and the moving-average parameters are combined to obtain the filter parameters. The invention is preferably applied in audio coding, wherein a spectrum of a noise component (S) in the signal (A) is modeled.
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申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;DEN BRINKER, ALBERTUS, C.;OOMEN, ARNOLDUS, W., J. |
发明人 |
DEN BRINKER, ALBERTUS, C.;OOMEN, ARNOLDUS, W., J. |