<div dir="ltr">This might explain it <a href="http://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem">http://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem</a><div><br></div><div style>Vladimir</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jul 2, 2013 at 2:21 PM, Herring, J.D. (Jim) <span dir="ltr"><<a href="mailto:j.herring@fcdonders.ru.nl" target="_blank">j.herring@fcdonders.ru.nl</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Dear z.imane,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">If you resample to a smaller frequency you will reduce the number of data points. You will therefore most certainly lose data. Whether you lose ‘information’ depends on whether there is data relevant to you in frequency bands that cannot be analyzed after resampling. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Best,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jim<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:fieldtrip-bounces@science.ru.nl" target="_blank">fieldtrip-bounces@science.ru.nl</a> [mailto:<a href="mailto:fieldtrip-bounces@science.ru.nl" target="_blank">fieldtrip-bounces@science.ru.nl</a>] <b>On Behalf Of </b>z.imane<br>
<b>Sent:</b> dinsdag 2 juli 2013 14:42<br><b>To:</b> FieldTrip discussion list<br><b>Subject:</b> [FieldTrip] (no subject)<u></u><u></u></span></p></div><div class="im"><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">
I have a signal of a certain frequency. if I resampled to a smaller frequency. is that I have a loss of information?<br clear="all"><u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">
<u></u> <u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div>
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