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Engineering · Electrical Engineering
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02) (50P) Consider a Discrete Time signal x(n] = 2 + cos( n + 급) which has a period N = 12. a) Define the signal x[n] and plot it as figure 1. b) Find the Fourier transform of this signal as X by using the fft function and plot this as figure2. c) Find the angle and absolute values of X and plot them by using subplot as figure3. d) Find the inverse Fourier transform of X by using isft function and save it as x recon. Then plot the real and imaginary parts of x.recon by using subplot as figure4.

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