[FieldTrip] Estimate of cross spectral density in a frequency band

Susmita Sen susmitasen.ece at gmail.com
Sat Dec 17 07:39:52 CET 2016


Dear Community,

I want to estimate the cross spectra of two time-series in a
particular frequency band (not at individual frequency points), at the same
time I also want to keep the time information as well. So, I preferred to
use wavelet time-frequency transformation. If I use the following code I
get cross spectra at 21 different frequency points. However, I want to
compute it in a particular frequency band. I would be very grateful if any
could kindly give me suggestions how to achieve this.

    cfg = [];
    cfg.method = 'wavelet';
    cfg.output = 'powandcsd';
    cfg.toi = 1:0.01:2;
    cfg.foilim = [8 13];
    cfg.keeptrials = 'yes';
    freq = ft_freqanalysis(cfg,data);



Thanks and Regards,
Susmita Sen
Research Scholar
Audio and Bio Signal Processing Lab.
E & ECE Dept.
IIT Kharagpur
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