Abstract: In DSP application digital filter plays vital role. Therefore, digital filtering is one of the basic needs of digital signal processing. Digital filtering plays a significant role in the world of technology. Therefore, processing of input signal has to be done to get useful or wanted signal. This paper deals with the design of finite impulse response digital filter using window techniques the design based on MATLAB simulation. Through this paper the intricacies of the window methods are explained in a simple and a suitable manner. In this paper the comparative performance analysis of proposed filter are done with respect to Magnitude, Phase and Impulse. From simulation it is observed that Kaiser window shows better response in compare with other technique i.e. Hamming and Hanning.

Keywords: FIR Filter, DSP, Hamming Window, Hanning, Window, Kaiser Window, MATLAB, frequency sampling, amplitude-frequency.