How many real multiplications are required to find DFT of 32 point signal using DFT
Question
Solution 1
The Discrete Fourier Transform (DFT) of an N-point sequence involves N^2 complex multiplications. However, each complex multiplication involves 4 real multiplications. Therefore, the total number of real multiplications required to compute the DFT of an N-point sequence is 4N^2.
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