A little unusual, but, the the Boss DF-2 uses a CD4046 to generate a sine wave an octave or two above your input tone to simulare feedback<br><a href="http://experimentalistsanonymous.com/diy/Schematics/Distortion%20Boost%20and%20Overdrive/BOSS%20DF2.pdf">
http://experimentalistsanonymous.com/diy/Schematics/Distortion%20Boost%20and%20Overdrive/BOSS%20DF2.pdf</a><br><br> You should be able to Dx7 style FM with a couple PLLs, but, I might be wrong on that one.<br><br><div><span class="gmail_quote">
On 1/6/06, <b class="gmail_sendername">amokan</b> <<a href="mailto:amokan@gmail.com">amokan@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Can anyone recommend any 'quick and dirty' PLL examples related to music circuits on the web?<br><br>thanks.<br>
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