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

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Rune Allnor

Posts: 4,455
Registered: 12/7/04
Re: FIR Filter
Posted: Sep 14, 2009 5:42 PM
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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



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