Design and Realization of Variable IIR Digital Filters as a Cascade of Identical Subfilters
Summary :
A new approach to design variable IIR digital filters by using a cascade of N identical individual filters of any order n is proposed in this paper. First, the approximation method for lowpass filter specifications is outlined, then the general limitations of the new method are investigated and a compact formula is derived. Next, the limitations for the main canonic approximations (Butterworth, Chebyshev and Elliptic) are investigated and compared and convenient expressions for design and evaluation are obtained. New first- and second-order filter sections, permitting very easy tuning of the cutoff frequency by recalculating and reprogramming of a single multiplier coefficient value, are developed and the design and tuning strategies for highpass, bandpass and bandstop filters are proposed. Finally design examples are given and the sound superiority of the new method compared to other known is demonstrated experimentally.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E84-A No.8 pp.1831-1839
- Publication Date
- 2001/08/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Section on Digital Signal Processing)
- Category
- Digital Filter
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Georgi STOYANOV, Ivan UZUNOV, Masayuki KAWAMATA, "Design and Realization of Variable IIR Digital Filters as a Cascade of Identical Subfilters" in IEICE TRANSACTIONS on Fundamentals,
vol. E84-A, no. 8, pp. 1831-1839, August 2001, doi: .
Abstract: A new approach to design variable IIR digital filters by using a cascade of N identical individual filters of any order n is proposed in this paper. First, the approximation method for lowpass filter specifications is outlined, then the general limitations of the new method are investigated and a compact formula is derived. Next, the limitations for the main canonic approximations (Butterworth, Chebyshev and Elliptic) are investigated and compared and convenient expressions for design and evaluation are obtained. New first- and second-order filter sections, permitting very easy tuning of the cutoff frequency by recalculating and reprogramming of a single multiplier coefficient value, are developed and the design and tuning strategies for highpass, bandpass and bandstop filters are proposed. Finally design examples are given and the sound superiority of the new method compared to other known is demonstrated experimentally.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_8_1831/_p
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@ARTICLE{e84-a_8_1831,
author={Georgi STOYANOV, Ivan UZUNOV, Masayuki KAWAMATA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design and Realization of Variable IIR Digital Filters as a Cascade of Identical Subfilters},
year={2001},
volume={E84-A},
number={8},
pages={1831-1839},
abstract={A new approach to design variable IIR digital filters by using a cascade of N identical individual filters of any order n is proposed in this paper. First, the approximation method for lowpass filter specifications is outlined, then the general limitations of the new method are investigated and a compact formula is derived. Next, the limitations for the main canonic approximations (Butterworth, Chebyshev and Elliptic) are investigated and compared and convenient expressions for design and evaluation are obtained. New first- and second-order filter sections, permitting very easy tuning of the cutoff frequency by recalculating and reprogramming of a single multiplier coefficient value, are developed and the design and tuning strategies for highpass, bandpass and bandstop filters are proposed. Finally design examples are given and the sound superiority of the new method compared to other known is demonstrated experimentally.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - Design and Realization of Variable IIR Digital Filters as a Cascade of Identical Subfilters
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1831
EP - 1839
AU - Georgi STOYANOV
AU - Ivan UZUNOV
AU - Masayuki KAWAMATA
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2001
AB - A new approach to design variable IIR digital filters by using a cascade of N identical individual filters of any order n is proposed in this paper. First, the approximation method for lowpass filter specifications is outlined, then the general limitations of the new method are investigated and a compact formula is derived. Next, the limitations for the main canonic approximations (Butterworth, Chebyshev and Elliptic) are investigated and compared and convenient expressions for design and evaluation are obtained. New first- and second-order filter sections, permitting very easy tuning of the cutoff frequency by recalculating and reprogramming of a single multiplier coefficient value, are developed and the design and tuning strategies for highpass, bandpass and bandstop filters are proposed. Finally design examples are given and the sound superiority of the new method compared to other known is demonstrated experimentally.
ER -
English
