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+//Example 10.1
+
+clc;
+close;
+clear;
+fx=8000;    //sampling frequency of original signal
+
+//Plotting original sequence
+for f=1:1024
+    original(f)=sin(2*180*f/(fx/2));    
+end
+subplot(2,1,1);
+plot2d3(original);
+title('Original sequence');
+xlabel('Frequency');
+ylabel('Amplitude');
+
+df=2;       //decimation factor
+decimated=[];
+n=1;
+
+//Decimation
+for i=1:length(original)                
+    if modulo(i,df)~=0
+        decimated(n)=original(i);
+        n=n+1;
+    end
+end
+
+//Plotting decimated sequence
+subplot(2,1,2);
+plot2d3(decimated);
+title('Decimatated sequence');
+xlabel('Frequency');
+ylabel('Amplitude');