updated the code

1 files changed, 30 insertions, 25 deletions

diff --git a/1592/CH9/EX9.11/example_9_11.sce b/1592/CH9/EX9.11/example_9_11.sce
index cb72453e8..51fb4d676 100755
--- a/1592/CH9/EX9.11/example_9_11.sce
+++ b/1592/CH9/EX9.11/example_9_11.sce
@@ -1,25 +1,30 @@
-//Scilab Code for Example 9.11 of Signals and systems by

-//P.Ramakrishna Rao

-//Power Spectral Density 

-clear;

-clc;

-clear f n;

-fo=2;

-n=1;

-RC=1/(2*%pi*10^3);

-w=4*%pi*10^3

-H=1/(1+%i*w*RC);

-disp(H,'H(f)');

-X=(abs(H))^2;

-for f=-5:5

-    Pxx(n)=25*[delta(f-fo)+delta(f+fo)];

-    Pyy(n)=X*Pxx(n);

-    n=n+1;

-end

-disp(Pxx,'Pxx=');

-disp(Pyy,'Pyy=');

-f=-5:5;

-plot2d3(f,Pyy,-2);

-title('Power Spectral Density');

-ylabel('Pyy(f)');

-xlabel('f in Hz');

+//Scilab Code for Example 9.11 of Signals and systems by
+//P.Ramakrishna Rao
+//Power Spectral Density 
+clear;
+clc;
+function [y]=delta(t)
+    if t==0
+    y=1
+else y=0
+    end
+endfunction
+fo=2;
+n=1;
+RC=1/(2*%pi*10^3);
+w=4*%pi*10^3
+H=1/(1+%i*w*RC);
+disp(H,'H(f)');
+X=(abs(H))^2;
+for f=-5:5
+    Pxx(n)=25*[delta(f-fo)+delta(f+fo)];
+    Pyy(n)=X*Pxx(n);
+    n=n+1;
+end
+disp(Pxx,'Pxx=');
+disp(Pyy,'Pyy=');
+f=-5:5;
+plot2d3(f,Pyy,-2);
+title('Power Spectral Density');
+ylabel('Pyy(f)');
+xlabel('f in Hz');
\ No newline at end of file