# aubio/aubio

a library for audio and music analysis

Repository: https://github.com/aubio/aubio
Canonical: https://ross.abutalabs.com/products/aubio
Homepage: https://aubio.org
Language: C
License: GPL-3.0
License Family: copyleft
Topics: audio, music, analysis, c, python, sound, extraction, annotation, onset, pitch, beat, tempo-tracking, mfcc
Last push: 2026-04-10T16:42:19+00:00

## Health v2 (maintenance only)
Score: 57/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 76, release rhythm 8, longevity 100
- inputs: {"age_days": 6116, "days_push": 145, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3754, forks 422 (observed 2026-08-28T04:08:17.751534+00:00)

## What it is
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
- artifact type: library
- maturity: stable
- function: audio-processing, nlp, machine-learning
- domain: audio, media, machine-learning
- platform: cross-platform, python, c, cli, windows
- tags: music-information-retrieval, onset-detection, pitch-detection, beat-tracking, tempo, mfcc, real-time-audio, midi, audio, macos, linux

## Member repositories
- aubio/aubio (main) score 57

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:17.751534+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:28:56.863084+00:00, confidence not recorded.
  - readme: https://github.com/aubio/aubio (fetched 2026-08-28T04:08:17.751534+00:00, sha 691c804cec73)
  - homepage: https://aubio.org (fetched 2026-08-29T09:23:01.672458+00:00, sha 3b70d498508d)
- Data as of 2026-08-30T08:39:29.467469+00:00.