aubio/aubio

Health v2 · maintenance only

Adoption not part of the score

3754 stars · 422 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

aubio is a C library (with Python bindings and CLI tools) for labeling music and sounds, detecting events such as note onsets, pitch, and tempo in audio signals. It supports real-time causal processing and provides algorithms for onset detection, pitch tracking, beat/tempo tracking, MFCC, FFT, and digital filtering.

Use cases

• detect note onsets in an audio file
• extract pitch from a recording
• track beat and tempo of a song
• slice a sound file at onsets or beats
• compute MFCC features from audio
• convert live audio to MIDI notes
• find quiet and loud regions in a track

When to choose

• you need fast, real-time audio event detection in C or Python
• you want battle-tested MIR algorithms like onset, pitch, and tempo tracking
• you need CLI tools to annotate or slice audio files

When to avoid

• you need a permissive license for a commercial product (GPL-3.0 only)
• you need high-level deep-learning-based audio models
• you need a managed audio platform rather than a low-level library

Facets

library · maturity stable

audio-processing nlp machine-learning audio media machine-learning cross-platform python c cli windows music-information-retrieval onset-detection pitch-detection beat-tracking tempo mfcc real-time-audio midi audio macos linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="aubio/aubio")