metabolus

A QTWidgets C++ app for a basic digital synthesizer.

This synthesizer isn't very good, but it's neat :3

Development plan:

• Build & project setup, get working hello-world program.
• QTWidgets hello-world program: basic increment/reset counter
• RtAudio hello-world: basic sine output
• Connect UI control to sound output, add a slider for frequency control
• Add note control via either Midi or a keyboard. Coordinate on-off events to start and stop tone generation
• Create a widget for this smart-slider to clean up the ui code
• Add envelope generation, attach to global volume for now. ADSR and such, responds to note-on/note-off events
• Make midi/keyboard control cross-platform. Use case will mostly be Midi -> linux and Keyboard -> windows though
• Create oscillator class where the actual tone generation occurs. Multiple oscillators increase the sound complexity considerably
• Create a UI scope to visualize the synthesized composite waveform
• Create wavetables for more complex tone generation. Needs to be selectable from ui
• Create digital filters, prob biquad. Controllable from ui obv (cutoff + resonance)
• Add polyphony somewhere. Probably involves a voice class. If processing power allows it, tie a voice to each midi note
• Add noise ?
• planning gets sparse this far out because its how far I got with the ESP32 synth

setup

TODO: instructions on build setup Package Dependencies: Qt 6, RtAudio, RtMidi

$ ./scripts/build.sh PS ./scripts/build.bat