initial commit / add all books

1 files changed, 22 insertions, 0 deletions

diff --git a/62/CH6/EX6.35/ex_6_35.sce b/62/CH6/EX6.35/ex_6_35.sce
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index 000000000..3961a8106
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+clear;

+clc;

+close;

+disp("given system is y[n]-a*y[n-1]=x[n]");

+disp("taking fourier transform H(w)=Y(w)/X(w)=1/(1-a*e^-j*w)");

+//impulse response 

+n=-10:10;

+w=-3:0.01:3;

+a=.5;

+Hw=ones(1,length(w))./(1-a*%e^(-%i*w));

+h=(1/2*%pi)*Hw*exp(%i*w'*n); 

+disp("impulse response is a^n*u[n]")

+plot2d3(n,h);

+plot(n,h,'r.')

+xtitle('h[n]','n')

+figure

+plot(w,abs(Hw),'r')

+a=0.9;

+Hw=ones(1,length(w))./(1-a*%e^(-%i*w));

+plot(w,abs(Hw),'b')

+xtitle('|H(w)|','w')

+legend(['a=0.5';'a=0.9']);
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