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din
din is a free software musical instrument and audio synthesizer for the GNU/Linux operating system. A din player uses the computer mouse to pick both the pitch (by moving horizontally) and the volume (by moving vertically) of a sound from an on-screen pitch board that displays the notes of the current scale in addition to a number of microtones in-between. By varying the mouse position, a player can change the pitch & volume of their sound and improvise their music. din is unique among synthesizers to use Bezier curves for almost all aspects of sound production: Waveforms (timbre), FM/AM (Carrier & Modulator), Gaters (Left & Right channel patterns) & FX (Delay Feedback & Volume envelopes). Users can also create an unlimited number of drones pitched on any microtone and edit them in real-time.