1 files changed, 23 insertions, 0 deletions
diff --git a/2279/CH7/EX7.5/Ex7_5.sce b/2279/CH7/EX7.5/Ex7_5.sce
new file mode 100644
index 000000000..a1251bdb9
--- /dev/null
+++ b/2279/CH7/EX7.5/Ex7_5.sce
@@ -0,0 +1,23 @@
+//DTFS coefficients of periodic square wave
+clear;
+close;
+clc;
+N = 10;
+N1 = 2;
+Wo = 2*%pi/N;
+xn = ones(1,length(N));
+n = -(2*N1+1):(2*N1+1);
+a(1) = (2*N1+1)/N;
+for k =1:2*N1
+  a(k+1) = sin((2*%pi*k*(N1+0.5))/N)/sin(%pi*k/N);
+  a(k+1) = a(k+1)/N;
+  if(abs(a(k+1))<=0.1)
+    a(k+1) =0;
+  end
+end
+a =a';
+a_conj =conj(a);
+ak = [a_conj($:-1:1),a(2:$)];
+k = -2*N1:2*N1;
+plot2d3('gnn',k,abs(ak))
+xtitle('Magnitude spectrum','k','|ak|')