[sdiy] Glide question

[Tim Parkhurst]

On Sat, Sep 4, 2010 at 12:05 PM, cheater cheater <cheater00 at gmail.com> wrote:
> Hi guys,
> a glide circuit is usually a first-order RC filter applied to the
> V/Oct CV, right? Are there any other prevalent designs? If I wanted to
> realize this in an active (voltage-controlled) fashion, what would be
> the best way to do it?
>
A few examples of glide circuits, based on Harry Bissell's "Morphlag"
which allows independant up and down rates, and can vary the glide
shape from linear to log.
http://www.wiseguysynth.com/larry/schematics/Morph-Lag.htm

You could use a single OTA in place of the Attack and Decay pots, or
two OTAs. The 13700 would do the trick, and I'm sure the 1/2 of the
2164 (a quad VC gain stage chip) would also work.

Tim (doing the Glide) Servo
-- 
"Sire, the church of God is an anvil that has worn out many hammers."
- H.L. Hastings