i want draw x(t) h(t) y(t) in just one plot window

i want draw x(t) h(t) y(t) in just one plot window

Ts=0.01;

t=[ -4 : Ts : 4 ];

x=3*rectpuls(t/2);

h=2*rectpuls(t/4);

y=Ts*conv(x,h);

ty=[0:length(y)-1]*Ts-6;

plot(t,x,'R');

hold on;

plot(t,h,'B');

hold on;

plot(ty,y,'G');

axis([-4 4 0 6]);

hold on;

But graph is incorrect

y(t) i think..

start -1~1 = start Increase

       1~3 = maximum

       3~4= Decrease

please help TT

Answer 1

[Star Strider]

The problem is that you need to not change ‘t’ in the convolution plot. This looks correct to me:

y=Ts*conv(x,h,'same');          % Use The ‘same’ Option

plot(t,y,'G');

[rollcakes]

thanks but graph is -3~ 3 maximum is 12 i think -1~4 maximum 4

TT

[Star Strider]

My pleasure.

If you want to define your rectpuls functions differently, you would get a different result for the convolution. For your functions as you defined them here, the result of your code (with my changes) is correct.