3 files changed, 20 insertions, 0 deletions
diff --git a/40/CH5/EX5.4/Exa_5_4.sce b/40/CH5/EX5.4/Exa_5_4.sce
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+//DTfT of periodic signals
+x=[3 2 1 2];//one period of signal
+n=0:3;
+k=0:3;
+x1=x*exp(%i*n'*2*k*%pi/4)
+dtftx=abs(x1)
+x=[3 2 1 2 3 2 1 2 3];
+n=-4:4;
+a=gca();
+a.y_location="origin";
+a.x_location="origin";
+plot2d3('gnn',n,x);
+xtitle('discrete periodic time signal');
+x2=[dtftx dtftx 8];
+a=gca();
+xset('window',1);
+a.x_location="origin";
+a.y_location="origin";
+plot2d3('gnn',n,x2);
+xtitle('DTFT of discrete periodic signal');
+\ No newline at end of file
diff --git a/40/CH5/EX5.4/Exa_5_4_0.jpg b/40/CH5/EX5.4/Exa_5_4_0.jpg
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diff --git a/40/CH5/EX5.4/Exa_5_4_1.jpg b/40/CH5/EX5.4/Exa_5_4_1.jpg
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index 000000000..f2557d814
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+++ b/40/CH5/EX5.4/Exa_5_4_1.jpg