RolloSONIC is a fully-freeware, fully-modular sound synthesis environment with mouse-guided tweaking and real-time interconnection. This software is particularly suited to making science-fiction sound effects, yet it can also be used in music production. Automated control channel duplexing, a variable-bandwidth control pipe, and multi-device euphony support various possibilities. You can easily integrate input from MIDI keyboards and knobs into the synthesis process. RolloSONIC automatically detects and can run as an installed program or in portable mode -- no installation required.
Using the modular design, sound input from one sound card can be routed to the output of another, granted a bit of latency is not a problem. Because of the ease with which tones of various frequencies can be created, this software could be used in hearing tests and can certainly be used for testing subwoofer systems.
Unlike other modular synthesis environments, RolloSONIC is relatively efficient on CPU and operates in realtime. This means you can add modules to the configuration while you are listening to those already in the mix. Many software-based synthesisers are practically useless without a MIDI keyboard, but with RolloSONIC, the MIDI keyboard is optional as you can instead use your mouse movement to guide the sound synthesis.
This software is intended for those seeking to learn about sound generation, those wanting to create science-fiction sound effects, and pretty much anyone interested in the production of electronic or ambient music.