Prev: need help in maths of inertial navigation system
Next: matlab coding plezzzzzzzzz........
From: Wayne King on 9 Aug 2010 13:09
"Debora " <debi_can(a)yahoo.com.br> wrote in message <i3pbpg$i0f$1(a)fred.mathworks.com>...
> >
> > Hi Debora, Yes, you can highpass filter the signal, removing everything below 5 Hz. What is your sampling frequency?
> >
> > Wayne
>
> Hi, Wayne
>
> My data was collected using 2000 Hz.
>
> Debi

Debi, you can use fdesign.highpass and design() to design your filter.

h = fdesign.highpass('Fst,Fp,Ast,Ap',20,25,60,1,2000);
d = design(h,'butter');
% visualize your filter
fvtool(d)

Removes frequencies below 20 hertz.

Do you need to implement zero-phase filtering? If not, you can implement your filter as:

output = filter(d,input);

Wayne
 | 
Pages: 1
Prev: need help in maths of inertial navigation system
Next: matlab coding plezzzzzzzzz........