How to make distubance like this?

I want to make disturbance in matlab like this picture? How can I make it?

Answer 1

[Mathieu NOE]

looks like a square wave modulated by an decaying exponential envelope

fine tune the parameters to your own needs :

tau = 0.1;  % exp decay rate
freq = 0.25; % square wave frequency
amp = 2000; % amplitude
Fs = 1e2;  % sampling rate (>> at least 2*freq)
samples = 3000;


dt = 1/Fs;
t = (0:samples-1)*dt;
x = -amp*exp(-tau*t).*sign(cos(2*pi*freq*t)); % or use square function instead of sign(cos) if you have the signal processing tbx

plot(t,x)

[Tu]

Thank you so much, that's is what I need.

Best wishes to you.

[Mathieu NOE]

as always, my pleasure !