Be careful if you are rectifying your signal, your frequency domain analysis will not necessarily be correct - a rectified sine wave looks approximately like a sine wave with double the frequency and half the amplitude.<br clear="all">
<br>-- <br>Hugh Nolan,<br>Trinity Centre for Bioengineering<br>
Trinity Biomedical Sciences Institute, <br>
Trinity College Dublin,<br>
152-160 Pearse Street, <br>
Dublin 2<br><br>Tel: <a href="tel:%2B353861297722" value="+353861297722" target="_blank">+353861297722</a><br>