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Kiro Synth

This is my 4rd iteration on building a synthesiser ;-)

This time, these are my goals:

  • The synth logic can be used in embedded systems (I plan to build actual hardware from this).
  • Internally it is like a modular synth, where all the blocks (Osc, Lfo, Filter, Env, Dca, ...) can be patched together using a simple Rust DSL

This is the very beginning of this project and I plan to take quite some time developing it, but it already makes some noise ;-)

cd kiro-synth-host
cargo run --release

NOTE: You have to connect your MIDI keyboard before starting the synth. Also it only supports MacOS right now.

Screenshots

Roadmap

  • Basic synth pieces: Oscillator, EG, LFO, Filter, DCA
  • Rust DSL to build the synth graph as a program
  • Basic voice management
  • Parameters can be changed from MIDI events or a UI
  • Controlling parameters from a Druid UI
  • Modulation of parameters through a modulation matrix
  • The modulation matrix can be tuned from the UI
  • UI feedback for the modulations
  • UI feedback for the number of voices
  • UI feedback for the output levels
  • Fix modulation parameters value ranges
  • Fix LFO phase parameter
  • Add note expression as modulation sources (velocity, pitch, modwheel, after touch)
  • Patch management from configuration
  • Patch management from the UI
  • Internal signals explorer (oscilloscope, spectrum analyzer, Peak/RMS level meter)
  • Improve the program with more blocks (add one more EG and LFO)
  • Improve the program graph to include global oscillators parameters (octave, semitones, cents, drift, filter output)
  • Improve the program graph to allow FM synthesis using the oscillators
  • Improve the program graph to add more parameters for the oscillators (filter output)
  • Add a square waveshape (including new parameter for width)
  • Add noise waveshapes
  • Add more filters
  • Filter mode parameter shows the filter name in the UI
  • Improve the Knob widget to support logarithmic parameters
  • Unison ?
  • UI feedback for the CPU usage
  • ...

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