Arcetri Astrophysical Observatory

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logosmallarcetri Arcetri Technical Reports 3/2012

A design method for very large FIR filters


INAF Osservatorio Astrofisico di Arcetri


Finite Impulse Response (FIR) filters are often used in digital signal processing. Commonly used methods for designing these filters in a general way fail to converge for filter sizes greater than a few hundred coefficients.

In this report we describe a method to compute large (up to several thousand elements) low-pass FIR filters, extending the frequency response of a smaller filter computed with the standard Remez method.

Pdf version of this report