FILIP Silviu-Ioan

Invited by : Marc MEZZAROBBA
Arrival date : 02/25/2015
Departure date : 03/03/2015

Talks : *The Parks McClellan algorithm*
| Based on the theory of minimax polynomial approximation, the
| Parks-McClellan algorithm is one of the most well-known approaches
| for designing finite impulse response filters. In this talk, I will
| give new insights on the practical behavior of this algorithm. The
| main ideas I will be focusing on are barycentric interpolation
| methods and numerically stable root finding routines that rely on
| determining the eigenvalues of appropriate structured matrices.
| Barycentric interpolation and eigenvalue-based rootfinders have
| garnered a lot of interest from numerical analysts in the last
| fifteen years. I will explain how these building blocks can be used
| to write an efficient implementation of the aforementioned
| algorithm, and showcase its robustness by comparing it to other
| filter design routines found inside widely used software
| environments, like Matlab and Scipy.