From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2294/CH8/EX8.19/EX8_19.sce | 81 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100755 2294/CH8/EX8.19/EX8_19.sce

(limited to '2294/CH8/EX8.19/EX8_19.sce')

diff --git a/2294/CH8/EX8.19/EX8_19.sce b/2294/CH8/EX8.19/EX8_19.sce
new file mode 100755
index 000000000..1d6b00c14
--- /dev/null
+++ b/2294/CH8/EX8.19/EX8_19.sce
@@ -0,0 +1,81 @@
+
+//Example 8.19.1
+//Use fourier transform to determine the response of the following signal
+clc;
+clear all;
+n=-10:10
+for i=1:length(n)
+    if n(i)>=1 then
+        x(i)=(3/4)^n(i);
+        h(i)=(1/2)^n(i);
+    else
+        x(i)=0;
+        h(i)=0;
+    end
+end
+subplot(3,2,1)
+plot(x,n);
+xtitle('(a)x(n)');
+subplot(3,2,2)
+plot(h,n);
+xtitle('(b)h(n)');
+X=fft(x,-1);
+H=fft(h,-1);
+subplot(3,2,3)
+plot(X,n);
+xtitle('(c)X(n)');
+subplot(3,2,4)
+plot(H,n);
+xtitle('(d)H(n)');
+Y=H.*X;
+subplot(3,2,5)
+plot(Y,n);
+xtitle('(e)Y(n)');
+y=fft(Y,1);
+disp(y,'The output response is:');
+subplot(3,2,6)
+plot(y,n);
+xtitle('(f)y(n)');
+
+
+clf()
+
+//Example 8.19.2
+//Use fourier transform to determine the response of the following signal
+clc;
+clear;
+n=-10:10
+for i=1:length(n)
+    if n(i)>=1 then
+        x(i)=(-1)^n(i);
+        h(i)=(1/2)^n(i);
+    else
+        x(i)=0;
+        h(i)=0;
+    end
+end
+subplot(3,2,1)
+plot(x,n);
+xtitle('x(n)');
+subplot(3,2,2)
+plot(h,n);
+xtitle('h(n)');
+X=fft(x,-1);
+H=fft(h,-1);
+subplot(3,2,3)
+plot(X,n);
+xtitle('X(n)');
+subplot(3,2,4)
+plot(H,n);
+xtitle('H(n)');
+Y=H.*X;
+subplot(3,2,5)
+plot(Y,n);
+xtitle('Y(n)');
+y=fft(Y,1);
+disp(y,'The output response is:');
+subplot(3,2,6)
+plot(y,n);
+xtitle('y(n)');
+
+
-- 
cgit