<html><body><div style="font-size: 12pt; font-family: "times new roman", "new york", times, serif; color: rgb(0, 0, 0);"><div>Hi Dieder (et. al.)</div>
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<div><a href="http://larry.retrosynth.com/larry/guitar.htm">http://larry.retrosynth.com/larry/guitar.htm</a> look for "Muffy III" schematic which is a six channel guitar processor using hex fuzz.</div>
<div>Each string has a separate envelope follower that has faster attack than is possible with an averaging filter, but still can respond quickly to a sudden loss of signal. It is best with a monophonic input.</div>
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<div>It was published here, but it seems to have lost all the schematic drawings and other illustrations. <a href="https://www.edn.com/envelope-follower-combines-fast-response-low-ripple/">https://www.edn.com/envelope-follower-combines-fast-response-low-ripple/</a></div>
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<div>If you try this on something other than a guitar, it may not be worth the complexity. If you are processing drums, a simple peak detector might be better. And if you are trying to process</div>
<div>full range audio, the ability of the circuit to turn off quickly when the input stops is lost.</div>
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<div>Harry</div>
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<blockquote style="margin: 0 0 0 .8em; border-left: 1px #ccc solid; padding-left: 1em;"><hr id="MESSAGE_DATA_MARKER"><strong>From: </strong>NT <nathan@idmclassics.net><br><strong>To: </strong>Didier <didierleplae@yahoo.com><br><strong>Cc: </strong>synth-diy@synth-diy <synth-diy@synth-diy.org><br><strong>Date: </strong>Friday, 16 June 2023 10:46 AM EDT<br><strong>Subject: </strong>Re: [sdiy] Envelopes and gates from guitar<br><br>
<div dir="ltr">Paging <span class="gmail-il">Harry</span> <span class="gmail-il">Bissell... I'm not sure anyone else on the list has dedicated as much attention to guitar synths/processing as he has.</span>
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<div><span class="gmail-il">Is your goal to extract envelope/gate from single strings or the full signal? </span></div>
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<div><span class="gmail-il">The External Signal Processor from the Korg MS-20 is a very useful circuit worth looking at, but IIRC requires at least one multigang pot that could be difficult to get, though may be available now due to Eurorack clones.</span></div>
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<div><span class="gmail-il">Nathan</span></div>
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<div class="gmail_attr" dir="ltr">On Thu, Jun 15, 2023 at 11:59 PM Didier Leplae via Synth-diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank" rel="noopener noreferrer">synth-diy@synth-diy.org</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">Greetings synth diy list,<br>Does anyone have any good examples of designs or general thoughts pertaining to envelope followers and gates from a guitar signal? <br><br><br>_______________________________________________<br>Synth-diy mailing list<br><a href="mailto:Synth-diy@synth-diy.org" target="_blank" rel="noopener noreferrer">Synth-diy@synth-diy.org</a><br><a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank" rel="noopener noreferrer">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank" rel="noopener noreferrer">marketplace@synth-diy.org</a></blockquote>
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