using freqanalysis_wltconvol

[Jan Mathijs Schoffelen]

Dear Sameer,

If you want to have equal window sizes for all frequencies, you should use
freqanalysis_mtmconvol.

Yours,

JM

-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Sameer Walawalkar
Sent: Thursday, August 30, 2007 10:53 PM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: [FIELDTRIP] using freqanalysis_wltconvol

Hi,

My question is about using freqanalysis_wltconvol instead of
freqanalysis_mtmfft.

Currently I use mtmfft  to calculate cross-spectra for segments of the
data (usually 200 ms long and with some padding).
>>From what I can understand from the help of freqanalysis_wltconvol, it
seems to me that while cfg.toi determines times on which the analysis
window is centered, while cfg.width and cfg.gwidth end up using different
time windows for different frequencies. What cfg parameters will allow me
to use wavelets for equal window size for all frequency?

Also how can I determine what number in ms does a particular cfg.width
amount to?

Thanks in advance.

Best,
Sameer

----------------------------------
The aim of this list is to facilitate the discussion between users of the
FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG
and EEG analysis. See also
http://listserv.surfnet.nl/archives/fieldtrip.html and
http://www.ru.nl/fcdonders/fieldtrip.

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.