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Unformatted text preview: z 1 and z 2 . (iii) Compute the amplitude and phase spectra of x , displaying each as a vector. (iv) Express x [ n ] as a linear combination of three realvalued sinusoids. S 22.2 ( P 3.8 in textbook). Consider the realvalued signal x given by x [ n ] = 3(1) n + 7cos n 4 + 1 . 2 + 2cos n 2. 8 , n = 0 ,..., 7 (i) Which Fourier frequencies (for an eightpoint sample) are present in the signal x ? (ii) Determine the amplitude spectrum of x , displaying your answer in the form A A 1 A 2 A 3 A 4 A 5 A 6 A 7 / T (iii) Determine the phase spectrum of x , displaying your answer in the form 1 2 3 4 5 6 7 / T...
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 Spring '08
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