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<DIV><FONT face=Arial size=2>This doesn't answer your question but it may be
worth a look, anyway:</FONT></DIV>
<DIV><FONT face=Arial size=2>Harry Bissell's MorphLag circuit </FONT><FONT
face=Arial size=2><A
href="http://www.wiseguysynth.com/larry/schematics/Morph-Lag.htm">http://www.wiseguysynth.com/larry/schematics/Morph-Lag.htm</A>
</FONT><FONT face=Arial size=2>goes from linear to expo as well as in between.
Clever, Harry, very clever! :-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Feed it a gate signal and you've got an AR. It's
not as simple as Brodeur's AR, however. Life's full of
trade-offs...</FONT></DIV>
<DIV>--<BR>john</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT
face=Arial size=2></FONT><BR> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=peng3002@yahoo.com href="mailto:peng3002@yahoo.com">Peng</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, September 18, 2004 2:20
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [sdiy] Simple AR tips</DIV>
<DIV><BR></DIV>
<DIV>I just finished one (of the many) AR envelopes, for the most part it's
the Charles Broduer schematic. Consists of 2 diodes, 2 pots, a 741, couple
resistors, and LED. I tended to avoid these designs but I'm expecting a MIDI
to trigger board from Mr. Maddox and needed envelopes that would reflect the
trigger velocities. </DIV>
<DIV> First problem was the envelope would slow up considerably when it
gets close to zero. Not good for percussion. I fixed that by using an offset
trim (striaght from TL071 data).</DIV>
<DIV> I've just started experimenting with the AR so if anyone has any
opinions or suggestions or tips, please let them flow. Such as capacitor types
( found that polyester SEEMS quicker than the specified electrolytic ). I
would like to tweak the response curves but not sure how to approach it.</DIV>
<DIV> Any techniques for employing velocity in patches would be very
interesting to hear about.</DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>Thanks,</DIV>
<DIV>P.</DIV></BLOCKQUOTE></BODY></HTML>