Generating baseline wandering noise

5 visualizzazioni (ultimi 30 giorni)
Tinkul
Tinkul il 30 Apr 2014
Commentato: Star Strider il 1 Mag 2014
How to generate baseline wandering noise in matlab code?

Risposta accettata

Star Strider
Star Strider il 30 Apr 2014
Here is one way:
t = linspace(0,10*pi,1000);
s = sin(t);
sn = 0.3*cos(t./4);
figure(1)
subplot(2,1,1)
plot(t, s)
title('Signal with constant baseline')
grid
subplot(2,1,2)
plot(t, s+sn)
title('Signal with with wandering baseline')
grid
  2 Commenti
Tinkul
Tinkul il 1 Mag 2014
Modificato: Tinkul il 1 Mag 2014
thank you sir...Little bit doubt is here...You have takena signal sin signal and cos signal to get baseline wandering noise. I have 20 samples for eg
A=[-0.165
-0.155
-0.195
-0.205
-0.185
-0.155
-0.135
-0.095
-0.075
-0.065
-0.065
-0.125
-0.125
-0.125
-0.115
-0.125
-0.165
-0.115
-0.145
-0.115]
For these samples i want to generate baseline wandering noise...How can i do it.....Please help....
Star Strider
Star Strider il 1 Mag 2014
Change this line to produce a 20-element vector:
t = linspace(0,10*pi,20)';
sn = 0.5*cos(t./3)*(max(A)-min(A));
figure(1)
plot(A,'-b')
hold on
plot(A+sn,'-r')
hold off
The sn assignment generates the baseline noise, so all you need to do to generate your code with a wandering baseline is to add your signal to it. This code should work for your signal. Only you know what you need, so feel free to change it as necessary.

Accedi per commentare.

Più risposte (0)

Tag

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by