[sdiy] Wondering about function generators for envelopes

[Bob Weigel]

Korn wrote a book on tube circuits? Man they do get around. :-) I agree. 
EG's have been in sort of a rut. In particular it would be nice to see 
selectable attack/decay/release curves. And looping segments are always 
nice. Was thinking of implementing that on my eventual synth project. If 
I can just gett his stupid RV thing finished. Man. -Bob

Metrophage wrote:

>I don't know much about analog computation, I wonder why people don't
>make more varied kinds of envelope generators. Is it because more
>complex functions are difficult to make, or because people aren't
>interested in more varied envelopes? Not neccessarily "arbitrary", but
>just different than setting four amplitude levels. Say, for instance,
>four (or more) points with controls for how quickly we go between them,
>amplitude of each point, and ways of describing various transitions or
>interpolations between them. Or even just modules for a function which
>offers a few variables which produce decent musical envelopes. It seems
>obvious, but I never see anything like this. All of my web searches
>yield endless links to benchtop function generator units, rather than
>people designing and making various kinds of functions. I have Korn and
>Korn's 1950's book on computation at my parents house, but it being all
>tube-oriented is a bit confusing to me.
>
>Does anybody do this sort of thing? Using a sequencer, Jim's cool EG,
>rate-settable and/or chainable ADSRs sounds neat - but there is
>something else which should exist that eludes me.
>
>CJ
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