initial commit / add all books

2 files changed, 39 insertions, 0 deletions

diff --git a/1574/CH1/EX1.13/Result_Figure_1_Ex1_13.jpg b/1574/CH1/EX1.13/Result_Figure_1_Ex1_13.jpg
new file mode 100755
index 000000000..74013a238
--- /dev/null
+++ b/1574/CH1/EX1.13/Result_Figure_1_Ex1_13.jpg
diff --git a/1574/CH1/EX1.13/Signals_Ex_1_13.sce b/1574/CH1/EX1.13/Signals_Ex_1_13.sce
new file mode 100755
index 000000000..3c15db1fd
--- /dev/null
+++ b/1574/CH1/EX1.13/Signals_Ex_1_13.sce
@@ -0,0 +1,39 @@
+clear ;

+clc ;

+close ;

+//Chapter 1

+//Ex1.13, page no 44

+// CTS Signal

+A =1; // Amplitude

+Dt = 0.005;

+T1 =0.5; //Time in seconds

+t=0:Dt:T1;

+for i = 1: length(t)

+xt(i)=A;

+end

+// Continuous time Fourier Transform

+Wmax= 2*%pi*1; // Analog Frequency = 1Hz

+K =4;

+k=0:(K/1000):K;

+W =k*Wmax/K;

+xt=xt';

+XW =xt*exp(-sqrt(-1)*t'*W)*Dt;

+XW_Mag =real(XW);

+W =[-mtlb_fliplr(W), W(2:1001)]; // Omega from -Wmax to Wmax

+XW_Mag =[mtlb_fliplr( XW_Mag ), XW_Mag(2:1001)];

+// displaying the given function

+subplot(2 ,1 ,1);

+a =gca();

+a.data_bounds =[ -1,0;1,2];

+a.y_location ="origin";

+plot(t,xt);

+xlabel('t in msec .');

+title(' Contiuous Time Signal x(t) ')

+// displaying the fourier Transform of the given function

+subplot(2 ,1 ,2);

+a=gca();

+mprintf('F(w)= 1/(j*w)+ pi*delta(w)')

+a.y_location ="origin";

+plot(W, XW_Mag);

+xlabel('Frequency in Radians / Seconds ');

+title('Continuous time Fourier Transform X(jW)' )