Pitch2Synth-rs

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