[sdiy] Virus envelopes (was Re: Fast envelope generation)

[Tom Wiltshire]

On 19 Dec 2012, at 01:55, Russell McClellan wrote:

> I remember being quite impressed with envelope section in the Access
> Virus digital synth manual - nominally, it only has linear envelopes,
> but you can use the modulation matrix to produce exponential or log
> curves by routing the envelope level back to the attack, decay, or
> release parameters.  I think that's a clever and intuitive UI for
> users and it must have been relatively easy to implement.
> 
> Did this idea come from some analog device?  I'd be quite surprised if
> it didn't and it very much has the feel of buchla or serge or some
> banana system.

The Oberheim Xpander/Matrix enabled something similar. This is mentioned in the Owner's manual ("Creating very long or unusual envelopes"), so it's clearly something Oberheim thought about.

T.