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1. Digital linear phase notch filter design based on IIR all-pass filter application

Author

Stančić, Goran and Nikolić, Saša

Subjects
*INFINITE impulse response filters, *DIGITAL filters (Mathematics), *NOTCH filters, *APPROXIMATION theory, *LINEAR statistical models, *ALGORITHMS
Abstract

Abstract: A new procedure for design of linear phase IIR notch filters is presented in this paper. Resulted filter is realized using parallel connection of two IIR all-pass filters with approximately linear phase. Adequate amplitude characteristic is obtained by approximation of all-pass filter phase. Amplitude characteristic satisfies all prescribed demands but it is not equiripple no matter both all-pass filters have equiripple phase. Algorithm exhibits fast convergence and easy initial values determination. [Copyright &y& Elsevier]

Published
2013
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