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Topic: FIR Filter
Replies: 9   Last Post: Sep 20, 2009 1:25 PM

 Messages: [ Previous | Next ]
 alfredo Posts: 11 Registered: 5/27/09
Re: FIR Filter
Posted: Sep 17, 2009 5:15 PM

Rune Allnor <allnor@tele.ntnu.no> wrote in message <66029692-ecd3-497f-827f-9089a7d019f8@h30g2000vbr.googlegroups.com>...
> On 14 Sep, 23:33, "alfredo " <luka_...@hotmail.com> wrote:
> > Rune Allnor <all...@tele.ntnu.no> wrote in message <6d6346f2-e093-4f73-a99b-156b9b675...@y42g2000yqb.googlegroups.com>...
> > > On 13 Sep, 12:10, "alfredo " <luka_...@hotmail.com> wrote:
> > > > I have some problems with FIR filter,someone can help me?
> >
> > > > I write my pseudo code:
> >
> > > > clear all;
> > > > Asim=[17, 18]; ?%Definisce le ampiezze
> > > > Tsim=[22.5, 33.48]; ?%Definisce i periodi
> > > > fase=[1.1, 2.2]; ?%Definisce le fasi
> > > > p=1:2048;
> > > > value=0; ?%Oscilla attorno la linea dello zero se value=0
> > > > Coseno1=0;
> > > > Coseno2=0;
> > > > Coseno1=Coseno1+Asim(1)*cos(2*pi*1/Tsim(1)*p+fase(1))';
> > > > Coseno2=Coseno2+Asim(2)*cos(2*pi*1/Tsim(2)*p+fase(2))';

> >
> > > > serie12=Coseno1+Coseno2;
> > > > step =0.01;

> >
> > > > serie= serie12;
> > > > step=0.01;
> > > > Tmin=8;
> > > > Tmax=120;
> > > > A=length(serie);

> >
> > > > Y=fourier(serie',Tmax,Tmin,step); ? ? ? ? ? ?%fourier trasform
> >
> > > > Ok , now how can I implement a high pass filter FIR, for cut off ?the frequency 1/ 33.48 ?
> >
> > > What has all this to do with designing filters?
> >
> > > Rune
> >
> > Is possible I don't understand, my english is very bad
> > but i don't want use a toolbox because I want to use this filter process in another program.

>
> Your English was good enough. I just do not understand
> what relation there is between the material you posted
> and a question about how to design a FIR filter.
>
> Rune

Because I want to remove the low frequency in the signal ( infrequency domain) and I think I have to use a high pass filter, my friend suggest FIR filter, but if you want we can start with a normal high pass, you can help me with an example?

Date Subject Author
9/13/09 alfredo
9/13/09 Rune Allnor
9/14/09 alfredo
9/14/09 Rune Allnor
9/17/09 alfredo
9/19/09 alfredo
9/19/09 Wayne King
9/20/09 alfredo
9/20/09 Wayne King
9/18/09 acepsut@gmail.com