<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hi again everyone,<br><br>I've got stuck, I'm trying to write code to calculate the amplitude and frequency of a low frequency amplitude modulation in a recording. My knowledge of coding is limited and online help isn't providing any answers. Any help on how to proceed would be greatly appreciated.<br><br>Many thanks<br><br>Tom<br></td></tr></table><br>