Comparison of Band-stop FIR Filter using Modified Hamming Window and Other Window functions and Its Application in Filtering a Mutitone Signal
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2012, Vol 1, Issue 8
Abstract
In this paper Matlab program is used to implement a Band-stop FIR filter using modified coefficient of the Hamming window function and its application in filtering a Multitone input signal. FIR filter designed using modified coefficient of the Hamming window function provides smaller main lobe width and sharp transition band compare to Hamming window. This type of filter plays very important role in spectral analysis of different types of signal. In spectral analysis applications a small main lobe width of the window function in frequency domain is required for increasing the ability to distinguish two closely spaced frequency components. Experimental results show that the band frequency component of the mixed input signal successively eliminates by using this band-stop FIR filter. Comparison of band-stop FIR filter using modified window, Hanning window and Hamming window are shown in fig. Further, we compare of the input and output signal in frequency and time domain using modified window, Hanning window and Hamming window functions. The simulation results show that the filter designed using modified window function is more efficient than Hanning and Hamming window function.
Authors and Affiliations
Saurabh Singh Rajput , , Dr. S. S. Bhadauria
Keywords
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