How to generate noise signal with desired max and min signal?

Hello Guys,

I want to ask about, how to generate noise signal with a desired max and min amplitude?. For example, I want to generate noise signal with max 4 and min 2 just like this figure.

Thank you

Answer 1

[Karim]

if you just want a random signal you can try the following:

MinVal = 2 ;
MaxVal = 4;
numPoints = 1000;
Data = MinVal + rand(numPoints,1) .* (MaxVal - MinVal);
figure
plot(Data)
grid on
ylim([0 5])

[Sabella Huang]

Thank you for your answer, it is work for me

Answer 2

[Raghav]

Hi @Sabella Huang

You can use tha rand() function to get a random noise signal in range of (a,b) by writing the expression: a+(b-a)*rand(size(x)).

x = linspace(0,1000,1000);
plot(2+2*rand(size(x)))

To undesrtand more about the rand() function, read the following documentation:

https://in.mathworks.com/help/matlab/ref/rand.html

[Sabella Huang]

Thank you for your answer, it is work for me