Help not sure what I am doing! need a starting point for digital filters

Hi there, I am a student research who has just collected some raw EEG data from participants in my study. I was told that I need to preform two different things to my data (1) an eightieth-order band-pass FIR digital filter between .3Hz and 60 Hz (2) an eightieth-order band-stop FIR digital filter between 58 Hz and 62Hz

I am in way over my head here and do not know where to even start...I was hoping that you may be able to give me some directions Thanks in advance Courtney

Answer 1

[Youssef Khmou]

Courtney,

If you have signal processing toolbox, you can start with :

 %  Band pass
 b = fir1(8,[0.03 0.60]);
 r=randn(500,1); %  as EEG signal
 y=filter(b,1,r);
 figure, psd(y);

 %  Band stop
 b = fir1(8,[0.03 0.60],'stop');
 r=randn(500,1); %  as EEG signal
 y=filter(b,1,r);
 figure, psd(y);

[Courtney Milner]

Awesome thanks!!!