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Adaptive notch filters from lossless bounded real all-pass functions for frequency tracking and line enhancing

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conference contribution
posted on 2010-03-02, 16:28 authored by Jonathon Chambers, A.G. Constantinides
The authors introduce constrained adaptive notch filters which are synthesized from a numerically robust all-pass filter section. This section is realized as a structurally lossless bounded real function which is canonic in both multipliers and delay elements. The notch filter structures admit orthogonal tuning of their notch frequency and bandwidth. For the two structures, frequency tracking and signal enhancement outputs are derived. The mirror image pair of polynomials present in a real all-pass transfer function is shown to yield significant simplification in the generation of the necessary gradient terms used in parameter adaptation. A cascade of such structures is shown to be suitable for tracking multiple sinusoids. Simulation results verify the utility of these structures for frequency tracking

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

CHAMBERS, J. and CONSTANTINIDES, A.G., 1991. Adaptive notch filters from lossless bounded real all-pass functions for frequency tracking and line enhancing. IN: IEEE International Conference on Acoustics, Speech, and Signal Processing, 14-17 April, Volume 3, pp. 1553 - 1556

Publisher

© IEEE

Version

  • VoR (Version of Record)

Publication date

1991

Notes

This is a conference paper [© IEEE]. It is also available from: http://ieeexplore.ieee.org/. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

ISBN

0780300033

ISSN

1520-6149

Language

  • en

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