RustyDigitalPitchFollower
Rust app to convert an audio stream into a midi stream to trigger external synthesizers.
Build Instructions
Run cargo build --release followed by target\\release\\pitch2synth-rs.exe to build and run an optimized executable
Architecture
4 threads communicate via Bus, an intra-thread ringbuffer
- Audio aquisition thread
- Managed by CPAL(Cross Platform Audio Library) via callback
- Communicates via Bus to transmit audio to pitch estimation and UI threads
- Pitch estimation thread
- Computes Constant-Q transform via Goertzel algorithm
- Takes argmax of frequency ampltiudes
- Accounts by harmonic errors
- Communicates via Bus to transmit frequency data to MIDI and UI threads
- MIDI handler thread
- Takes pitch data and sends corresponding MIDI note to external synthesizer via USB
- UI Thread
- Takes audio waveform from audio thread and frequency data from pitch thread and renders GUI
Interactive Graph