Consider a finite-duration sequence x[n] of length p such that x[n] = 0 for n < 0
Question:
Consider a finite-duration sequence x[n] of length p such that x[n] = 0 for n < 0 and n ≥ P. We want to compute samples of the Fourier transform at the N equally spaced frequencies
ωk = 2πk/N, k = 0, 1,…, N – 1.
Determine and justify procedures for computing the N samples of the Fourier transform using only one N-point DFT for the following two cases:
(a) N > P.
(b) N < P
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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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