Rune Allnor <firstname.lastname@example.org> wrote in message <email@example.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?