| EEGFILT | (high|low|band)pass filter EEG data using two-way least-squares FIR filtering. Multiple data channels and epochs supported. (Requires the Signal Processing Toolbox) |
| Usage: | >> [smoothdata] = eegfilt(data,srate,locutoff,hicutoff); >> [smoothdata,filtwts] = eegfilt(data,srate,locutoff,hicutoff, epochframes,filtorder); |
| Inputs: | |
data |
(channels,frames*epochs) data to filter |
srate |
data sampling rate (Hz) |
locutoff |
low edge frequency in pass band (Hz) {0 -> lowpass} |
hicutoff |
high edge frequency in pass band (Hz) {0 -> highpass} |
epochframes |
frames per epoch (filter each epoch separately {def/0: all} |
filtorder |
length of the filter in points {default 3*fix(srate/locutoff)} |
| Outputs: | |
smoothdata |
smoothed data |
filtwts |
filter coefficients [smoothdata <- filtfilt(filtwts,1,data)] |
| Author: | Scott Makeig, SCCN/INC/UCSD, La Jolla, 1997 |