Compute and plot the 4-point dft

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Reference no: EM131317351

Consider the signal

x[n] = δ[n]-2δ[n-1]+ 2δ[n-2]-δ[n-3].

(a) Compute and plot the 4-point DFT X[k].

(b) Using the fewest number of zeros possible, zero pad x[n] so that the DFT frequency resolution is at least Ω0 = 0.1. Compute and plot the corresponding DFT Xpad[k].

Reference no: EM131317351

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