Synthesizer

This is a modular synthesizer library for a fun side project -- building a synthesizer controller in real life and connecting it to a raspberry pi to have a (more) affordable synthesizer to mess around with.

Design

I've designed this with a more top-down approach, unlike most digital synthesizer libraries. Instead of doing something like:

let osc = OscillatorNode::new();
let gain = GainNode::new();

osc.connect(gain);
gain.connect(audio_out);

fn process_audio() -> f32 {
  gain.receive()
}

I designed it more like:

let osc = OscillatorNode::new();
let gain = GainNode::new();

fn process_audio() -> f32 {
  osc.process();
  gain.receive(osc);
  gain.get_out()
}

I hope by designing it this way it will be much more memory efficient, easier to follow, and easier to debug!

Debugging audio

This command converts the audio.raw file into a .wav to be open with any editor: ffmpeg -f f32le -ar 48000 -i audio.raw -f wav file-out.wav

Repositories I consulted

https://github.com/hosackm/BiquadFilter