ARMA direct form filter designing method to reconstruct FIR digital filters based upon genetic algorithm and simulated annealing

Autor:	Masaichi Akiho, Hideo Kitajima, Miki Haseyama
Rok vydání:	1997
Předmět:	Adaptive filter Acoustics and Ultrasonics Control theory Robustness (computer science) Computer science Simulated annealing Filtering problem Lattice phase equaliser Filter (signal processing) Sensitivity (control systems) Digital filter
Zdroj:	Journal of the Acoustical Society of Japan (E). 18:153-161
ISSN:	2185-3509 0388-2861
DOI:	10.1250/ast.18.153
Popis:	In this paper, the method for reconstructing FIR digital filter into ARMA direct form digital filter based upon adaptive ARMA Four Line Lattice filter with the phase estimation is proposed. The phase estimation is performed by the combination of GA (Genetic Algorithm) and SA (Simulated Annealing) in addition to the spectrum estimation. In order to reduce the calculation cost that will be significant issue for the system implementation of digital filters into the products, it will be necessary to design ARMA digital filter.Introducing the phase estimation method, it contributes the possibility to provide optimum ARMA digital filters that is not only relatively lower coefficient sensitivity and better robustness, but also it will maintain all its desired characteristics that include the phase performance. Maintaining the phase characteristics is the unforgettable factor for the fields of the inverse filtering problem for any opportunities. We conduct the original cost function that will cooperate with GA and SA searching in order to realize the phase estimation. In this paper, experimental results are also discussed to confirm the performance of proposed method.
Databáze:	OpenAIRE
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