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Author: sanjumaramattam

Diff for: circular_convolution.c

@@ -0,0 +1,42 @@
+// program to compute circular convolution of two sequences
+#include<stdio.h>
+int x[10],h[10],y[10];
+
+main()
+{ int i,n,k,l1,l2,j;
+  printf("enter the length of the input sequence x(n)");
+  scanf("%d",&l1);
+  printf("enter the length of the input sequence h(n)");
+  scanf("%d",&l2);
+  printf("enter the  input sequence x(n)");
+  for(i=0;i<l1;i++)
+     scanf("%d",&x[i]);
+  printf("enter the  input sequence h(n)");
+  for(i=0;i<l2;i++)
+     scanf("%d",&h[i]);
+     if(l1<l2)
+     { for(i=l1;i<l2;i++)
+          x[i]=0; 
+          l1=l2;
+     }
+  else
+     { for(i=l2;i<l1;i++)
+       h[i]=0;
+     }
+  for(n=0;n<l1;n++)
+     { y[n]=0;
+       for(k=0;k<l1;k++)
+          {if(k>n)
+           j=n-k+l1;
+           else
+           j=n-k;
+           y[n]=y[n]+x[k]*h[j];
+          }
+     }
+  printf("output sequence y(n)\n");
+  for(i=0;i<l1;i++)
+     printf("%d\t",y[i]);
+}
+
+
+