What is the use of DFT in DSP?
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Description : What is the difference between DFT and FFT?

Description : What is the meaning of DFT?

Description : 7.24 Consider the finite-duration signal x(n) = {1,2,3,1} (a) Compute its four point DFT by solving explicitly the 4-by-4 system of linear equations defined by the inverse DFT formula. (b) Check the answer in part (a) by computing the four-point DFT, using its defination.

Answer : Handwritten Solution for Problem Number 7.24 from Digital Signal Processing 4th edition By John G. Proakis

Description : What is the use of Fast Fourier Transform?

Description : What is the use of Z transform?