gAlan
modular audio processing and synthesis system
gAlan is a sophisticated audio-processing tool (both on-line and
off-line). It allows one to build synthesisers, effects chains, mixers,
sequencers, drum-machines, and much more, in a modular fashion. It
includes basic functionality for all these tasks, and also includes
support for LADSPA-compliant plugins, which greatly expand its
capabilities.