High tuning accuracy design of variable IIR filters as a cascade of identical sub-filters

Georgi Stoyanov, Ivan Uzunov, Masayuki Kawamata

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

The limits of application, tuning accuracy and sensitivity of variable IIR digital filters realized as a cascade of several identical sub-filters are investigated in this paper. Subfilters of first and second-order are realized with bilinear and biquadratic sections with independent tuning, developed by theauthors, while sub-filters of higher order are realized as parallel allpass structures using first and second-order allpass sections with minimized sensitivities. It is shown that filters so designed are having higher accuracy and wider ranges of tuning compared to other known variable filters and are behaving much better in a limited word-length environment.

Original languageEnglish
Article number1465440
Pages (from-to)3729-3732
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventIEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan
Duration: 2005 May 232005 May 26

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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