aubio

Latest changes

Merge branch 'aybe-patch-2' of feature/vcpkg_docs — 5/11/2019 19:04:27
Merge branch 'fix/winencoding' (closes gh-247) — 5/9/2019 02:37:51
[py] use universal_newlines=True to prevent decoding errors (see gh-247 gh-248) — 5/7/2019 05:36:51
Update binaries.rst — 4/25/2019 14:02:49
[py] fix note-off timings (closes #240, thanks to @chaoxinzheng) — 3/26/2019 23:55:17

Latest news

0.4.6 released — 10/4/2017 20:45:00

A new version of aubio, 0.4.6, is now available.

This version includes:

yinfast, a new version of the YIN pitch detection algorithm, that uses spectral convolution to compute the

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Analyzing songs online — 10/4/2017 19:34:00

When built with ffmpeg or libav, aubio can read most existing audio and video formats, including compressed and remote video streams. This feature lets you analyze directly audio streams from the ... +

0.4.5 released — 4/10/2017 22:02:00

A new version of aubio, 0.4.5, is available.

This version features:

a new aubio python command line tool to extract information from sound files
improved default parameters for onset detection,

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What is aubio ?

aubio is a tool designed for the extraction of annotations from audio signals. Its features include segmenting a sound file before each of its attacks, performing pitch detection, tapping the beat and producing midi streams from live audio.

Because these tasks are difficult, we thought it was important to gather them in a dedicated library. To increase the fun, we have made these algorithms work in a causal way, so as to be used in real time applications with as low delay as possible. Functions can be used offline in sound editors and software samplers, or online in audio effects and virtual instruments.

Features

aubio currently provides the following features:

digital filters
phase vocoder
onset detection (several methods)
pitch tracking (several methods)
beat and tempo tracking
mel frequency cepstrum coefficients (MFCC)
transient / steady-state separation

Please check our list of ideas and future developments to see if it is listed there.

Implementation

aubio is written in C and is known to run on most modern architectures and platforms.

The Python interface has been written in C so that aubio arrays can be viewed directly in Python as NumPy arrays. This makes the aubio module quite efficient, not to say fast.

As of version 0.4.0, aubio has no required dependencies. Optionally, aubio can be built with libav, libsndfile, libsamplerate and FFTW (none of these are needed on Apple platforms). On Linux platforms, aubio can be built using JACK, while on Apple machines, JackOSX and AudioToolbox can be used.

License

aubio is a free and open source software released under the GNU/GPL license.

Note: aubio is not MIT or BSD licensed. Contact the author if you need it in your commercial product.