Audio Fingerprinting in Rust: From WAV to Chromaprint

Abstract

Audio fingerprinting is the process of identifying audio samples by extracting compact signatures from raw PCM data. In this talk we walk through building a complete fingerprinting pipeline in Rust:

• WAV decoding and sample normalization
• FFT-based spectrogram generation
• Peak detection and constellation maps
• Hash generation and database lookup

Key Takeaways

1. Rust's zero-cost abstractions make DSP pipelines both fast and safe
2. The rustfft crate provides competitive performance with C FFT libraries
3. Real-time fingerprinting is achievable on commodity hardware with careful memory management

Slides

The full slides are available at slides.osorio.sys.