I want to write a C-program under Linux to synthesize sounds on a sound card by defining their ADSR envelopes (rather than playing previously sampled sounds. -- Background: Creating an electronic music instrument.)
I've come up pretty dry in a first search. In a pinch I'm also willing to try a different language than C, but even there the only results I've found were X-11 Basic.
Do you know of any C libraries which accept ADSR parameters?