You might want to check out the STK.
It has an object called Asymp, which can generate simple exponential
envelopes, and also an ADSR object. It also has tons of other
goodies.
As a bonus, it's cross-platform.
http://ccrma.stanford.edu/software/stk/
Here's the class list:
http://ccrma.stanford.edu/software/stk/hierarchy.html
Steve
On 6/29/06, james(a)dis-dot-dat.net <james(a)dis-dot-dat.net> wrote:
Hi peeps.
I've been writing an app that requires volume envelopes. I've
implemented the envelope part myself, but I was wondering if there
was a library about to do it.
I ask because I realised that probably everyone on this list has
written something that uses envelopes, and probably written it
better and with more features than I have.
More generally, is there a library/toolkit of audio bits and bobs
about?
James