how should design order of fir1 filter in eeglab>
%% Filtering
f_cent=10;
fs=512;%hz
f3db1=f_cent-1.5;
f3db2=f_cent+1.5;
order1=floor((fs/f3db1)*3);% length of the filter in points {default 3*fix(srate/locutoff)}
order2=floor((fs/f3db2)*3);
for i=1:LCH
xfil(i,:)=eegfilt(x(i,:),fs,f3db1,0,0,order1,0,'fir1'); %([smoothdata] = eegfilt(data,srate,locutoff,hicutoff);)
xfil(i,:)=eegfilt(xfil(i,:),fs,0,f3db2,0,order2,0,'fir1');
end
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