initial commit / add all books

1 files changed, 21 insertions, 0 deletions

diff --git a/716/CH9/EX9.5.m/MatLab_Prog9_5.sce b/716/CH9/EX9.5.m/MatLab_Prog9_5.sce
new file mode 100755
index 000000000..2c20ecc8d
--- /dev/null
+++ b/716/CH9/EX9.5.m/MatLab_Prog9_5.sce
@@ -0,0 +1,21 @@
+//Perform 4 point DFT of x(n)=(1 1 2 3) using FFT and sketch magnitude and phase spectrum

+clc;

+clear;

+N=4;

+xn=[1 1 2 3]

+Xk=fft(xn);

+wk=0:1:N-1;

+disp(Xk,'16 point DFT of x(n)=>');

+disp(abs(Xk),'magnitude of 16 point DFT x(n)=>');

+disp(atan(imag(Xk),real(Xk)),'phase of 16 point DFT x(n)=>');

+plot2d3(wk,xn,2);

+isoview(0,5,0,3);

+xset('window',1);

+subplot(1,2,1)

+plot2d3(wk,abs(Xk),2);

+isoview(0,5,0,5);

+xtitle('Magnitude Spectrum','k','|X(k)|');

+subplot(1,2,2)

+plot2d3(wk,atan(imag(Xk),real(Xk)),2);

+isoview(0,5,-5,5);

+xtitle('Phase Spectrum','k','angle(X(k))');
\ No newline at end of file