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Considering the DFT of an N-point sequence x[n], what is the spectral effect of zero-padding the...

  1. Considering the DFT of an N-point sequence x[n], what is the spectral effect of zero-padding the x[n] sequence to a length of Q samples (with Q being an integer power of two, and Q > N), followed by a Q-point DFT on the zero-padded sequence?

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