ZynAddSubFX is a fully featured musical software synthesizer for Linux, MacOS, BSD, and Windows. ZynAddSubFX exposes a wide array of synthesis parameters to make it flexible tool for sound design and a fun experience for playing instruments.

Features

• Polyphonic with support for legato and mono playing modes.
• Three synthesizer engines:
  • Additive Synthesis for classic synth sounds composed of a variety of voices with powerful modulation. This exposes modulators ranging from LFOs and envelopes to oscillator modulators for FM, PM, and AM.
  • Subtractive Synthesis for creating variable bandwidth harmonics from filtered white noise.
  • PAD synthesis for creating beautiful pads and other instruments.
• Powerful waveform generator with up to 128 sine/non-sine harmonics.
• A variety of filters including analogue modeled filters, formant filters, and state variable filters.
• Envelopes can have ADSR (or ASR, etc..) modes or can be free modes (with any shape).
• Effects for Reverb, Echo, Chorus/Flange, Phasing, Wave-shaping, Equalizing, Dynamic Filtering with flexible signal routing.
• Instruments can be organized in kits, which allows you to make drum kits or layered instruments; this makes possible to use more than one instrument for a single part. It is possible to choose what items from the kit should be processed by the Part’s effects.
• Randomness settings to create subtle differences in each sound to help create that familiar analogue warmth.
• Microtonal capabilities with any scale, up to 128 notes per octave, and key mapping.
• Extensive MIDI/Audio driver support including JACK, ALSA, OSS, and PortAudio.
• Session Management Support via LASH/NSM.
• Plugin Support via DSSI/LV2/VST.
• Over 1100 high quality instruments included.