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Discrete Fourier Transform: It is very important chapter covered in DSP course. Fourier Trasnform is done to convert a signal from time domain to frequency domain. There are two types of Fourier Transform : Continuous time Fourier Transform and Discrete Time Fourier Transform. Continuous Time Fourier Transform (CTFT) is taken for continuous time signals, whereas Discrete time Fourier Transform(DTFT) is taken for discrete time signals. When