Show HN: Contrapunk – Real-time counterpoint harmony from guitar input, in Rust
Summary
Contrapunk is a real-time counterpoint harmony engine built in Rust that converts guitar input into MIDI with sub-10ms latency. It demonstrates rule-based, deterministic voicing across multiple harmony and scale modes, with cross-platform support and MIT licensing. This presents a practical case study for real-time audio processing and algorithmic music tooling that could inspire AI-assisted music creation workflows.