A Procedure for Quasi-Equiripple Linear-Phase IIR Filters Design

Konopacki, J.; Moscinska, Katarzyna

doi:10.2478/v10177-010-0052-x

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Derivation Of a New Formula For Order Estimation (δ1

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“…In order to find the form and parameters of the function A = f (M, ω t , τ ), which approximates the obtained results, a method successfully applied for solution of a similar problem in the case of IIR filters has been applied [23]. The method consists of two stages.…”

Section: Derivation Of a New Formula For Order Estimation (δmentioning

confidence: 99%

Estimation of filter order for prescribed, reduced group delay FIR filter design

Konopacki¹,

Moscinska²

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. FIR filters are often applied, as they possess many advantages, including linear-phase response and well elaborated design methods. However, group delay introduced by FIR filters is usually large. The reduction of group delay can be obtained by restriction of the linear phase requirement only to the passband. One of the problems that appear while designing FIR filters with a prescribed value of group delay is the choice of the filter order. In the paper a formula for filter order calculation for the given filter parameters and dedicated for equiripple or quasi-equiripple approximation of the magnitude response has been derived based on experiments. Numerous examples that explain how to use the derived formula have been included.

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Section: Derivation Of a New Formula For Order Estimation (δmentioning

confidence: 99%