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Muhammad Anwar
Institut Teknologi Padang
Education

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PERANCANGAN BANDSTOP FILTER (BSF) DENGAN ALGORITMA GENETIK Muhammad Anwar
Jurnal Momentum ISSN 1693-752X Vol 16, No 2 (2014): Volume 16 No 2 Tahun 2014
Publisher : ITP Press

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Abstract

A study to find the optimal value required of digital filter design problem is given in this paper. In digital signal processing (DSP), designing an optimal filter is much preferred. Some of methods are commonly based on approximation methods. Genetic algorithm (GA) is a stochastic (random) searching method that mimics the metaphor of natural biological evolution to solve the problem, and in this case, it’s about how to find optimal digital filter design. In its application, GA just need the evaluation function as a problem representation which will to be optimized. The digital filter structures in z-domain indicates the nonlinear problem where the z value is constrained by the stability. The genetic programming can be used, when the transfer function H[z]of bandstop filter has been transferred to evaluation function, and –1  z  1 as the solution bounds and stability guarantee. The genetic programming simulation for solving digital filter problem is to produce the transfer function which has lowest order, stable and meet the prescribed tolerance settings (as design criteria). One of the disadventages using this method is the larger computational loading. However, the findings of this paper can be interpreted that the GA’s performance is different from the other methods in optimal digital filter design, especially in providing guarantees on fulfillment of all the design criteria.
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