Performance Analysis of FIR Filter Design by Using Rectangular, Hanning and Hamming Windows Methods

Digital filter are widely used in the world of communication and computation. On the other hand to design a digital finite impulse response (FIR) filter that satisfying all the required conditions is a challenging one. In this paper, design techniques of low pass FIR filters using Blackman window method, Optimal Parks McClellan method and Genetic Algorithm method are presented. The stability, number of components required and filter coefficients are demonstrated for different design techniques. It is shown that filter design by using GA is best because the numbers of components required are less and stability is more as compare with other techniques. Design comparisons are presented to show the effectiveness of GA optimization method