Cumulus is a software synthesizer which implements the Asynchronous Grain
Synthesis. This synthesis allows you to create very original sounds to be used
in your music (mainly percussive and ambient background sounds). It features a
convenient QT-based GUI where each paramter can be controlled by an envelope,
the ability for all parameters to be controlled with hardware controllers
(MIDI-controllerbox), an interface to use a MIDI-keyboard (polyphony
adjustable, default 8 voices), internal 32-bit accuracy, an internal sampling
rate that can be any multiple of the external one, and full realtime capability
with parameter changes audible within around 50ms, depending on system latency.