Hi,
I hope you don't mind that i post again the link to a very nice spectrum analyzer (especially for its sonogram), for matters of searching on planetZ in the furure. Certainly not as pro as the link above, but very very useful and extrememly cheap (9.95 USD without the CD), very accurate and, in fact, pretty profesional (i tested many sound inputs and this plug reacted very well for something of its kind, especially for developping devices).
direct link
http://spectool.mastak.com/
(it works on winamp).
Use it with a winamp "line-in" plu gin, and it does the job very well. Winamp is fed by a wave source, so mute the wave-source to avoid delay effect. and for the price you can't beat it.
Look for "spectrum" in winamp.com plugins, there are a few others i didn't test yet because i felt they were only visualization effect with no real accuracy.
<font size=-1>[ This Message was edited by: spacef on 2002-03-29 09:07 ]</font>