Question
I have matrix which is included the channels (row=19) and trial (columns=330) . Now, I have to design a FIR filter to extract data in different bands( beta, alpha, theta,...). I've used fdatool and now I'm confused how I can give my data to the filter to get the output! Could anyone help me?
Expert Answer
Neeta Dsouza
PhD Expert
Answered Aug 25, 2026
Without seeing your code that designs your filters, and your data (or a sample of it), it is not possible to determine what the problem is.
What dimension of your matrix represents the time-domain data of your EEG? I assume ‘channels’ is your EEG data and ‘trials’ represents some event. The problem is that EEG is usually sampled at a relatively high rate, so 330 samples could represent only a few seconds of data, at most.
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