All-Pole Spectral Envelope Modeling with Order Selection for Harmonic Signals
Résumé
We present a study into all-pole spectral envelope estimation for the
case of harmonic signals. We address the problem of the selection of
the model order and propose to make use of the fact that the spectral
envelope is sampled by means of the harmonic structure to derive a
reasonable choice for an appropriate model order. The experimental
investigation uses synthetic ARMA featured signals with varying
fundamental frequency and differing model structure to evaluate the
performance of the selected all-pole models. The experimental results
confirm the relation between optimal model order and the fundamental
frequency.