Comments (12)
AFAIK nobody is working on this
just be careful that filters you use are zero-phase
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Another option is to adapt the line filtering routines from Chronux, as they don't require the use of band-stop filters.
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heard this one before on the mailing list (probably you mentioned it:)
I should look into it once more.
thanks for the (re)pointer
On 24.10.2012, at 23:54, Eric89GXL [email protected] wrote:
Another option is to adapt the line filtering routines from Chronux, as they don't require the use of band-stop filters.
—
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Basically it uses multi-taper estimation combined with an F statistic to infer if there were significant sinusoidal components in the data. You can even specifically tell it which frequencies to test, which is nice because you could restrict it to the line freq and its harmonics. I haven't personally tried it on M/EEG data, though...
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sounds cool.
would be good however
On 25.10.2012, at 00:07, Eric89GXL [email protected] wrote:
Basically it uses multi-taper estimation combined with an F statistic to infer if there were significant sinusoidal components in the data. You can even specifically tell it which frequencies to test, which is nice because you could restrict it to the line freq and its harmonics. I haven't personally tried it on M/EEG data, though...
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woops, sorry, something was missing--
would be good to have one or two references from meeg studies using this technique.
but anyways, sounds very nice.
let me look into this soon.
D
On 25.10.2012, at 00:14, "Denis A. Engemann" [email protected] wrote:
sounds cool.
would be good howeverOn 25.10.2012, at 00:07, Eric89GXL [email protected] wrote:
Basically it uses multi-taper estimation combined with an F statistic to infer if there were significant sinusoidal components in the data. You can even specifically tell it which frequencies to test, which is nice because you could restrict it to the line freq and its harmonics. I haven't personally tried it on M/EEG data, though...
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Just a reminder to @agramfort to look into notch filtering for 0.6, as our code could easily knock out a small band of frequencies.
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also see #98
On 10.12.2012, at 20:48, Eric89GXL [email protected] wrote:
Just a reminder to @agramfort to look into notch filtering for 0.6, as our code could easily knock out a small band of frequencies.
—
Reply to this email directly or view it on GitHub.
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@agramfort do you have input on this? I assume you haven't had a chance to look through other packages...
Since I can't work on #11 while traveling, I might try to work on a few options for this: an FIR/FFT band-stop, an IIR band-stop, and I'll try doing what is done in chronux (although I've read through some of that code before, and it's not the easiest thing to understand). Let me know if you have other methods ideas.
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indeed no time to look carefully. I would fly with the code of the standard
toolbox in the domain for inspiration...
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We are using a perl translation of this matlab window-sinc filter,
which does a very nice job for removing power line artifacts from MEG data.
http://www.gomatlab.de/window-sinc-filter-t19156.html
I always wanted to translate it, but always other stuff seemed more
important.
On Fri, Dec 21, 2012 at 9:55 AM, Alexandre Gramfort <
[email protected]> wrote:
indeed no time to look carefully. I would fly with the code of the standard
toolbox in the domain for inspiration...—
Reply to this email directly or view it on GitHubhttps://github.com//issues/98#issuecomment-11606594.
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Closing this to move discussion to #316.
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