<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">HI Alejandro,<div class=""> </div><div class=""><br class=""></div><div class="">Thank you for responding, and please forgive my signal processing ignorance in my following reply.</div><div class=""><br class=""></div><div class=""> I read the comment below realize that this would be true for zeroing out this frequency but could I not replace the existing 60HZ coefficient with lets say the average power values of the59hz and 61Hz and reconstitute the wave without a heaving ringing?</div><div class=""><br class=""></div><div class="">Also say the data is decomposed using 1Hz frequency bins , but in the end I will only need to conduct time-frequncy analysis and 2Hz resolution, can i not spectral decompose the data at 1Hz and reconstitute it just using a 2Hz bin resolution?</div><div class=""><br class=""></div><div class="">thanks david<br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;">David I. Leitman PhD<br class=""> <br class="">Visiting Scientist,<br class="">PSYR2 - Psychiatric disorders: from Resistance to Response<br class="">Centre de Recherche en Neurosciences de Lyon (CRNL) INSERM-CNRS<br class=""> <br class="">E. <a href="mailto:david.leitman@ext.inserm.fr" class="">david.leitman@ext.inserm.fr</a><br class="">Web. <a href="http://davidileitman.com" class="">davidileitman.com</a></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Oct 6, 2017, at 3:30 PM, Alejandro Weinstein <<a href="mailto:alejandro.weinstein@gmail.com" class="">alejandro.weinstein@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><blockquote type="cite" class="">My question is as follows: 1)is there a good reason not to try this approach<br class=""></blockquote><br class="">The reason for not to try this approach is that what your are<br class="">proposing is equivalent to applying a brick wall filter. This will<br class="">cause a lot of ringing.<br class=""><br class="">See this link for more details:<br class=""><br class=""><a href="https://dsp.stackexchange.com/questions/6220/why-is-it-a-bad-idea-to-filter-by-zeroing-out-fft-bins" class="">https://dsp.stackexchange.com/questions/6220/why-is-it-a-bad-idea-to-filter-by-zeroing-out-fft-bins</a><br class=""><br class="">Alejandro<br class="">_______________________________________________<br class="">Mne_analysis mailing list<br class="">Mne_analysis@nmr.mgh.harvard.edu<br class="">https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis<br class=""><br class=""><br class="">The information in this e-mail is intended only for the person to whom it is<br class="">addressed. If you believe this e-mail was sent to you in error and the e-mail<br class="">contains patient information, please contact the Partners Compliance HelpLine at<br class="">http://www.partners.org/complianceline . If the e-mail was sent to you in error<br class="">but does not contain patient information, please contact the sender and properly<br class="">dispose of the e-mail.<br class=""><br class=""></div></div></blockquote></div><br class=""></div></body></html>