clc
clear all
close all
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%         Una señal que es un pulso cuadrado, si tiene duración diferente conservando la amplitud ¿qué ocurre con el espectro?
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
t = -3:0.01:7;
T0 = 5;
a = 0.5;
t1 = t - T0;
x = rectpuls(t1,a);
X = fft(x);
subplot(3,3,1)
plot(t,x), axis([-5 8 -1 4])
subplot(3,3,4)
plot(real(X))

x = rectpuls(t1,a/2);
X = fft(x);
subplot(3,3,2)
plot(t,x), axis([-5 8 -1 4])
subplot(3,3,5)
plot(real(X))

x = rectpuls(t1,a*2);
X = fft(x);
subplot(3,3,3)
plot(t,x), axis([-5 8 -1 4])
subplot(3,3,6)
plot(real(X))