A Method of Designing IIR Digital Filters with the Minimum Number of Interpolation Points

Yoshiro SUHARA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E74-A   No.9   pp.2652-2654
Publication Date: 1991/09/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing

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This letter presents a method of optimal design of IIR digital filters with the minimum number of interpolation points in magnitude response. Those filters are classified into four types and each of them is designed by a simple formula. Maximal flatness, ripple property, filter order, and steepness in transition band are discussed.