SynthFET 3000 is a browser-compatible audio synthesizer and tracker built with Python and Pygame CE. It lets you design custom waveforms, shape envelopes, add some effects, and compose full multi-track songs using an intuitive tracker interface — all without writing any code.
I made a video about it on YouTube:
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Realtime Keyboard Interface Play notes using your computer keyboard or touchscreen, with adjustable octave range.
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Waveform Editor Draw your own wave shapes or choose from presets (sine, square, saw, triangle, noise). Smooth and apply them interactively.
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Envelope Editor Shape the volume dynamics (ADSR, tremolo, pluck, ramp) over time. Smooth and apply envelopes just like waveforms.
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Tracker Module Compose songs using a familiar grid system:
- Multi-track pattern editor
- Per-track instrument selection
- Infinite song length with section navigation
- Adjustable tempo (BPM), pitch range, and export options
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Instrument Manager Save and load up to 6 custom instruments. Instantly swap them in or edit live.
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Effects Add reverb, overdrive and tremolo with tunable parameters.
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Web-Compatible Runs in the browser (via GitHub Pages or Itch.io). Installable as a Progressive Web App (PWA).
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Export to WAV Export full songs or individual tracks to
.wavfiles, with separate channels for easy mixing in DAWs like Audacity.
- Python + Pygame CE for interface an logic
- NumPy for waveform math and resampling
- Wave for exporting tracks
- Pygbag for packaging into a web app
- Uses
pygame.sndarrayto generate custom sounds in real-time
- Designed for experimentation and learning sound synthesis.
- Inspired by Bosca Ceoil and classic music trackers.
- Still evolving — implementation details may change.