[Eeglablist] FIR FFT

[Carlos Andrés Guerrero M.]

Dear Carlos
FFT filters are basically FIR filters with the difference that filtering is not done in the time domain, is done in frequency domain. This filter response is much faster if the FIR filter has a high order (large number of coefficients).
Here, more explanations about that:
http://www.qsl.net/d/dl4yhf///////speclab/filters.htm
Best
Carlos
ULB-Erasme 


________________________________
 De: Carlos CEVALLOS <ccevallo at ulb.ac.be>
Para: eeglablist at sccn.ucsd.edu 
Enviado: Martes, 5 de marzo, 2013 9:21 A.M.
Asunto: [Eeglablist] FIR FFT
 

Good Day
 
I am going crazy about this, and I can not figure out what would be the main difference between using the FIR filtering or the FFT alternative, is it just computation resources or is there anything else?
 
The question may be dumb but I have been trying to answer this by myself and can not come across a conclusive nor coherent answer. Thanks in advance, and looking forward for your replies
 
Best
 
Carlos CEVALLOS
Laboratory of Neurophysiology and Movement Biomechanics Faculty of Movement Science (FSM, N.5.109) Université Libre de Bruxelles Campus ERASME - CP 640 808, Route de Lennik
1070 ANDERLECHT
Belgium
Phone : +32/2/555.33.93
Fax : +32/2/555.69.63
Website : http://www.cheron.be
 
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