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

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Posts: 28
Registered: 7/29/05
Re: FIR Filter
Posted: Sep 18, 2009 2:38 PM
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Hello, I am also interested in how to use a FIR high pass filter to remove selected freq's .



"alfredo " <luka_ice@hotmail.com> wrote in message <h8igds$s2c$1@fred.mathworks.com>...
> 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 ?

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