envelope generators

[Matthew S. Padden]

Hi..

Colin wrote:
>
>Has anybody got circuits for decent envelope generators, as I am struggling
>to find some.
>

Get hold of the schematics for Digisound's VCES module (can't remember the 
number right now). It's a four stage (ADSR) generator, but each stage has 
voltage control of the rate. The envelope itself is exponential, and (very 
marvellously) you can adjust the exponential time constant either manually 
or by VC. Hurrah! 

The only problem is that it's based around the CEM3310 chip, which is not 
easy to find, although there are some if you look.

If you want I can send you photocopies of the article.

Later

--
Matthew S. Padden
Computer Music Research Group
Music Dept.
Huddersfield University
Queensgate
Huddersfield
England HD1 3DH
p: +44 1484 422288 x2402
f: +44 1484 472656
e: m.s.padden at hud.ac.uk