Journal ArticleDOI
A minimal parameter adaptive notch filter with constrained poles and zeros
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TLDR
A new algorithm is presented for adaptive notch filtering and parametric spectral estimation of multiple narrow-band or sine wave signals in an additive broad-band process and uses a special constrained model of infinite impulse response with a minimal number of parameters.Abstract:
A new algorithm is presented for adaptive notch filtering and parametric spectral estimation of multiple narrow-band or sine wave signals in an additive broad-band process. The algorithm is of recursive prediction error (RPE) form and uses a special constrained model of infinite impulse response (IIR) with a minimal number of parameters. The convergent filter is characterized by highly narrow bandwidth and uniform notches of desired shape. For sufficiently large data sets, the variances of the sine wave frequency estimates are of the same order of magnitude as the Cramer-Rao bound. Results from simulations illustrate the performance of the algorithm under a wide range of conditions.read more
Citations
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Proceedings ArticleDOI
Equivalent fullband implementation of subband subspace methods for frequency estimation
TL;DR: In this paper, a fullband scheme that is nearly equivalent to subband subspace methods is proposed, which is based on the use of higher-order lags in the sample covariance of sub-space methods.
Proceedings ArticleDOI
Built in performance evaluation for an adaptive notch filter
Michal Meler,Maciej Niedzwiecki +1 more
TL;DR: Simulation results confirm that the proposed extension of adaptive notch filtering algorithm with a nontrivial performance assessment mechanism allows one to improve accuracy of frequency estimates considerably, especially in nonstationary conditions.
Proceedings ArticleDOI
Effect of pole-radius in a piloted adaptive notch filter
TL;DR: An improved piloted adaptive notch filter with transient suppression and a higher probability of correct steering direction is introduced and the concept of variable pole-radius has been employed to significantly reduce the transient effect and improving the directional properties of the notch.
Journal ArticleDOI
A robust feedforward hybrid active noise control system with online secondary-path modelling
TL;DR: In this article , a robust feed-forward hybrid active noise control (HANC) system with online secondary-path modelling (SPM) is proposed that is capable of not only effectively suppressing the broadband and narrowband noise components but also tracking the secondary path (SP) variations.
References
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Adaptive noise cancelling: Principles and applications
Bernard Widrow,J.R. Glover,John M. McCool,J. Kaunitz,C.S. Williams,R.H. Hearn,James R. Zeidler,Jr. Eugene Dong,R.C. Goodlin +8 more
TL;DR: It is shown that in treating periodic interference the adaptive noise canceller acts as a notch filter with narrow bandwidth, infinite null, and the capability of tracking the exact frequency of the interference; in this case the canceller behaves as a linear, time-invariant system, with the adaptive filter converging on a dynamic rather than a static solution.
Book
Theory and application of digital signal processing
TL;DR: Feyman and Wing as discussed by the authors introduced the simplicity of the invariant imbedding method to tackle various problems of interest to engineers, physicists, applied mathematicians, and numerical analysts.
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Spectrum analysis—A modern perspective
Steven Kay,S.L. Marple +1 more
TL;DR: In this paper, a summary of many of the new techniques developed in the last two decades for spectrum analysis of discrete time series is presented, including classical periodogram, classical Blackman-Tukey, autoregressive (maximum entropy), moving average, autotegressive-moving average, maximum likelihood, Prony, and Pisarenko methods.
Journal ArticleDOI
Analysis of recursive stochastic algorithms
TL;DR: It is shown how a deterministic differential equation can be associated with the algorithm and examples of applications of the results to problems in identification and adaptive control.
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