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An Adaptive Algorithm for Cascaded Notch Filter with Reduced Bias

James OKELLO, Shin'ichi ARITA, Yoshio ITOH, Yutaka FUKUI, Masaki KOBAYASHI

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Summary :

In this paper we propose a new simplified algorithm for cascaded second order adaptive notch filters implemented using an allpass filter, for elimination of multiple sinusoids. Each of the stages of the notch filter is implemented using direct form second order allpass filter. We also present an analysis which compares the proposed algorithm with the conventional simplified algorithm, and which indicates that the proposed algorithm has a reduced bias in the estimation of the multiple input sinusoids. Simulation results that have been provided confirm this analysis.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E84-A No.2 pp.589-596
Publication Date
2001/02/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Digital Signal Processing

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