4. (20 points) For the following discrete-time periodic signal, find the (a) period N. (b) numerical values of the magni

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4 20 Points For The Following Discrete Time Periodic Signal Find The A Period N B Numerical Values Of The Magni 1 (111.25 KiB) Viewed 21 times

4. (20 points) For the following discrete-time periodic signal, find the (a) period N. (b) numerical values of the magnitude dnl,o sns N-1, of the discrete-time Fourier coefficients. (c) numerical values of the phase Zdn, Osns N-1, in degrees. (d) plot |dn| for Osns N-1. (e) plot Zdn for Osns N-1 in degrees. 4 3 e c Q a e e e 2 x(k) © e c c Q c 10 Q @ 0 -20 -15 -10 -5 O 5 10 15 20 k