Original paper
Group delay equalisation of discrete Butterworth tan filters in the continuous domain
Volume: 107, Issue: 5, Pages: 778 - 791
Published: Oct 15, 2019
Abstract
A new optimisation method for equalising the group delay frequency response of the discrete transfer function of recursive digital filters, so-called tan filters, is presented in this paper. The method is based on an algorithm that is used for a stable all-pass filter approximation. Allpass filter acts as a group delay equaliser, with the purpose of equalising group delay of the discrete tan filter in a maximal flat sense. The algorithm relies...
Paper Details
Title
Group delay equalisation of discrete Butterworth tan filters in the continuous domain
Published Date
Oct 15, 2019
Volume
107
Issue
5
Pages
778 - 791
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