B-spline design of digital FIR filter using evolutionary computation techniques

Manorama Swain; Rutuparna Panda

doi:10.1117/12.913496

1 October 2011 B-spline design of digital FIR filter using evolutionary computation techniques

Manorama Swain, Rutuparna Panda

Proceedings Volume 8285, International Conference on Graphic and Image Processing (ICGIP 2011); 82856P (2011) https://doi.org/10.1117/12.913496
Event: 2011 International Conference on Graphic and Image Processing, 2011, Cairo, Egypt

Abstract

In the forth coming era, digital filters are becoming a true replacement for the analog filter designs. Here in this paper we examine a design method for FIR filter using global search optimization techniques known as Evolutionary computation via genetic algorithm and bacterial foraging, where the filter design considered as an optimization problem. In this paper, an effort is made to design the maximally flat filters using generalized B-spline window. The key to our success is the fact that the bandwidth of the filer response can be modified by changing tuning parameters incorporated well within the B-spline function. This is an optimization problem. Direct approach has been deployed to design B-spline window based FIR digital filters. Four parameters (order, width, length and tuning parameter) have been optimized by using GA and EBFS. It is observed that the desired response can be obtained with lower order FIR filters with optimal width and tuning parameters.

Citation Download Citation

Manorama Swain and Rutuparna Panda "B-spline design of digital FIR filter using evolutionary computation techniques", Proc. SPIE 8285, International Conference on Graphic and Image Processing (ICGIP 2011), 82856P (1 October 2011); https://doi.org/10.1117/12.913496

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KEYWORDS

Optical filters

Finite impulse response filters

Genetic algorithms

Digital filtering

Signal attenuation

Optimization (mathematics)

Evolutionary algorithms

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