[sdiy] Wondering about function generators for envelopes

[Metrophage]

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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