2 files changed, 40 insertions, 0 deletions
diff --git a/758/CH7/EX7.3/Ex_7_3.sce b/758/CH7/EX7.3/Ex_7_3.sce
new file mode 100755
index 000000000..482166b37
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+++ b/758/CH7/EX7.3/Ex_7_3.sce
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+//Example 7.3
+
+clc;clear;close;
+fp=2000;        //passband frequency
+F=9600;         //sampling frequancy
+
+//Calculation of filter co-efficients
+a0=1/F*integrate('1','t',-fp,fp);
+for n=1:10;
+a(1,n)=2/F*integrate('cos(2*%pi*n*f/F)','f',-fp,fp);
+end
+h=[a(:,$:-1:1)/2 a0 a/2];
+
+//Displaying filter co-efficients
+disp(F,'Sampling frequency F= ',fp,'Assumption: Passband frequency fp= ');
+disp('Filter co-efficients:');
+disp(a0,'h(0)= ');disp(a/2,'h(n)=h(-n)=');
+
+n=-10:10;
+plot2d3(n,h);
+title('Filter transfer function h(n)');xlabel('n-->');
+\ No newline at end of file
diff --git a/758/CH7/EX7.4/Ex_7_4.sce b/758/CH7/EX7.4/Ex_7_4.sce
new file mode 100755
index 000000000..15ef34ce7
--- /dev/null
+++ b/758/CH7/EX7.4/Ex_7_4.sce
@@ -0,0 +1,19 @@
+//Example 7.4
+
+clc;clear;close;
+M=7;w=2*%pi/M;
+
+//Calculation of filter co-efficients
+k=[0 1 6];
+for n=0:M-1
+    h(n+1)=sum(exp(-%i*3*w*k).*exp(%i*w*k*n))/M;
+end
+h=clean(h);
+
+//Displaying filter co-efficients
+disp(M,'Filter Order M= ');
+disp('Filter co-efficients:');
+disp(h,'h(n)= ');
+
+plot2d3(h);
+title('Filter transfer function h(n)');xlabel('n-->');
+\ No newline at end of file