initial commit / add all books

1 files changed, 22 insertions, 0 deletions

diff --git a/716/CH8/EX8.1.b/Solved_Ex8_1b.sce b/716/CH8/EX8.1.b/Solved_Ex8_1b.sce
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+//Determine the fourier series representation of the given discrete time signal, x(n)=4cos(pi*n/2)

+clc;

+clear;

+n=-20:1:20;

+x=4*cos(%pi/2*n);

+N=4;

+for k=0:1:20

+    c=0;

+    for n=0:1:N-1

+        c=c+4*cos(%pi/2*n)*exp(-2*%i*%pi*k*n/N);

+    end

+    d(k+1)=c/N;

+end

+disp(d,'fourier series terms of given signal');

+k=0:1:20;

+subplot(1,2,1)

+dmag=abs(d);

+plot2d3(k,dmag);

+xtitle('Magnitude Spectrum','k values','|ck| magnitudes');

+subplot(1,2,2)

+plot2d3(k,atan(imag(d),real(d)));

+xtitle('Phase Spectrum','k values','angle(ck)');
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