| 摘要 |
A method for estimating coding parameters of a predictive filter model of a digital signal, in particular speech signal, comprises:
receiving a segment of said signal;
computing the spectrum of said segment;
estimating the background noise in said segment; and
estimating the fundamental frequency in said segment;
computing a spectral mask on the basis of said background noise and said fundamental frequency; and
determining those coding parameters that substantially minimize a cost function which is based on said spectrum, said spectral mask and said predictive filter model.
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