Awesome

nsfxr

A C# / .Net port of [sfxr] (http://www.drpetter.se/project_sfxr.html).

Originally a fork of usfxr but that was too heavily coupled to Unity and it was easier to rewrite the whole thing based on sfxr.

Uses nFMOD. No sound caching - this is assumped to be a function of the host, not the sound generation library.