CONF
KRS01/IDIAP
Signal modeling with Non Uniform Topology lattice filters
Krstulović, Sacha
Bimbot, Frédéric
EXTERNAL
http://publications.idiap.ch/attachments/papers/2001/sacha-ic01sk.pdf
PUBLIC
Proc. ICASSP 2001
ii
2001
This article presents a new class of constrained and specialized Auto-Regressive (AR) processes. They are derived from lattice filters where some reflection coefficients are forced to zero at a priori locations. Optimizing the filter topology allows to build parametric spectral models that have a greater number of poles than the number of parameters needed to describe their location. These NUT (Non-Uniform Topology) models are assessed by evaluating the reduction of modeling error with respect to conventional AR models.