|Developer(s)||Peter Hanappe and others|
|Stable release||1.1.6 / August 16, 2012|
|Operating system||Unix-like, Windows|
|License||GNU Lesser General Public License (version 2 or later)|
FluidSynth, formerly named iiwusynth, is a free open source software synthesizer which converts Musical Instrument Digital Interface (MIDI) note data into an audio signal using SoundFont technology without need for a SoundFont-compatible soundcard. FluidSynth can act as a virtual MIDI device, able to receive MIDI data from any program and transform it into audio on-the-fly. It can also read in SMF (.mid) files directly. On the output side, it can send audio data directly to an audio device for playback, or to a Raw or Wave file. It can also convert a SMF file directly to an audio file in faster-than-real-time. The combination of these features gives FluidSynth the following major use cases:
- Synthesizing MIDI data from another application directly to the speakers,
- Synthesizing MIDI data from another application, recording the output to an audio file,
- Playing a MIDI file to the speakers,
- Converting a MIDI file to a digital audio file.
The size of loaded SoundFont banks is limited by the amount of RAM available. There is a GUI for FluidSynth called Qsynth, which is also open source. Both are available in most Linux distributions, and can also be compiled for Windows. Windows binary installers are not distributed alone, though it is bundled with QSynth.
It features microtonal support and was used in the MicrotonalISM project of the Network for Interdisciplinary Studies in Science, Technology, and Music. A Max/MSP plugin is available from IRCAM.
- Josh Green (November 2, 2009). "FluidSynth 1.1.0 - "A More Solid Fluid"". Retrieved 2 September 2010.
- MicrotonalISM Project Home Page
- Official website
- FluidSynth on SourceForge
- Qsynth home page
- Christopher Antila, Musicians' Guide. A guide to Fedora Linux's audio creation and music capabilities. Chapter 10. FluidSynth. Fedora Documentation Project
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