Fast Fourier Transform (FFT) and DFT produces the same results. FFT is considered to be a fastest algorithm as it implements the Decomposition of the input sequence which reduces calculation.One more reason of being faster is that the input is applied in parallel fashion. Radix-2 algorithm was used for implementation of N (length of input signal)=4,8.The output index is in bit reversal order with that of the input.
Worth explained
ReplyDeleteWorth explained
ReplyDeleteInformation was good.
ReplyDeleteVery well explained
ReplyDeleteFFT is faster than DFT
ReplyDeleteYes as it uses parallel processing
DeleteAlso, it uses decimation, further reducing the calculations.
ReplyDeleteThank you for adding a valuable point
DeleteAlso number of computations required are less, thus speed increases.
ReplyDeleteWell explained
ReplyDeleteFFT is fast because of decomposition of input sequence, and this computation is then carried out parallely
ReplyDeleteDecomposition reduces calculations
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