DFrFTDiscrete Fractional Fourier Transform
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The MATLAB code developed by Candan, Kutay and Ozaktas [12] is used for computing DFrFT of desired impulse response which closely matches with the continuous transform i.
It is concluded in the work that using fractional order 'a' as tuning parameter, variable band-edge characteristics can be achieved by convolving the DFrFT of impulse response of low-pass FIR filter with the magnitude response of desired window function without the need to redesign a new filter.