<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:'times new roman', 'new york', times, serif;font-size:12pt">Hi all,<div><br></div><div>I'm having an issue with some vertical streaks in my cross-coherence spectrogram at the lower frequencies (<10hz). My problem is similar to an archived problem (<a href="http://sccn.ucsd.edu/pipermail/eeglablist/2007/002006.html">http://sccn.ucsd.edu/pipermail/eeglablist/2007/002006.html</a>), but instead of having issues at high frequencies, I'm getting perturbations at the lower frequencies. </div><div><br></div><div>Here is some of the output to give you an idea of my parameters:</div><div><div>Adjust min freq. to 0.06 Hz to match FFT output frequencies</div><div>Adjust max freq. to 49.99 Hz to match FFT output frequencies</div><div>Using hanning FFT tapering</div><div>Generating 1000 time points (128.1 to 1871.9 ms)</div><div>Finding closest
points for time variable</div><div>Time values for time/freq decomposition is not perfectly uniformly distributed</div><div>The window size used is 256 samples (256 ms) wide.</div><div>Estimating 819 linear-spaced frequencies from 0.1 Hz to 50.0 Hz.</div><div><br></div><div>Additionally, in an effort to increase overall resolution, I've been tweaking the default settings on newcrossf():</div><div>DEFAULT_NWIN<span class="Apple-tab-span" style="white-space:pre"> </span>= 1000;</div><div>DEFAULT_VARWIN<span class="Apple-tab-span" style="white-space:pre"> </span>= 0;</div><div>DEFAULT_OVERSMP<span class="Apple-tab-span" style="white-space:pre"> </span>= 64;</div><div><br></div><div>I have tried many minor tweaks to fix the issue, but nothing seems to be working. Any tips are appreciated!</div><div><br></div><div>Thanks,</div><div>Nick</div></div></div><br>
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