TestsTested | ✗ |
LangLanguage | Obj-CObjective C |
License | Custom |
ReleasedLast Release | Feb 2017 |
Maintained by Khoa Nguyen.
aubio is a library to label music and sounds. It listens to audio signals and attempts to detect events. For instance, when a drum is hit, at which frequency is a note, or at what tempo is a rhythmic melody.
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.
aubio provide several algorithms and routines, including:
The name aubio comes from audio with a typo: some errors are likely to be found in the results.
A python module to access the library functions is also provided. Please see
the file python/README
for more information on how to use it.
A few simple command line tools are included along with the library:
aubioonset
outputs the time stamp of detected note onsetsaubiopitch
attempts to identify a fundamental frequency, or pitch, for
each frame of the input soundaubiomfcc
computes Mel-frequency Cepstrum Coefficientsaubiotrack
outputs the time stamp of detected beatsaubionotes
emits midi-like notes, with an onset, a pitch, and a durationaubioquiet
extracts quiet and loud regionsAdditionaly, the python module comes with the following script:
aubiocut
slices sound files at onset or beat timestampsThe library is written in C and is optimised for speed and portability.
The C API is designed in the following way:
aubio_something_t * new_aubio_something (void * args);
audio_something_do (aubio_something_t * t, void * args);
smpl_t aubio_something_get_a_parameter (aubio_something_t *t);
uint_t aubio_something_set_a_parameter (aubio_something_t *t, smpl_t a_parameter);
void del_aubio_something (aubio_something_t * t);
For performance and real-time operation, no memory allocation or freeing take
place in the _do
methods. Instead, memory allocation should always take place
in the new_
methods, whereas free operations are done in the del_
methods.
The latest version of the documentation can be found at:
http://aubio.org/documentation
A number of distributions already include aubio. Check your favorite package management system, or have a look at the download page.
aubio uses waf to configure, compile, and test the source:
./waf configure
./waf build
sudo ./waf install
aubio compiles on Linux, Mac OS X, Cygwin, and iPhone.
This library gathers music signal processing algorithms designed at the Centre for Digital Music and elsewhere. This software project was developed along the research I did at the Centre for Digital Music, Queen Mary, University of London. Most of this C code was written by myself, starting from published papers and existing code. The header files of each algorithm contains brief descriptions and references to the corresponding papers.
Special thanks go Juan Pablo Bello, Chris Duxbury, Samer Abdallah, Alain de Cheveigne for their help and publications. Also many thanks to Miguel Ramirez and Nicolas Wack for their bug fixing.
Substantial informations about the algorithms and their evaluation are gathered in:
Additional results obtained with this software were discussed in the following papers:
P. M. Brossier and J. P. Bello and M. D. Plumbley, Real-time temporal segmentation of note objects in music signals, in Proceedings of the International Computer Music Conference, 2004, Miami, Florida, ICMA
P. M. Brossier and J. P. Bello and M. D. Plumbley, Fast labelling of note objects in music signals, in Proceedings of the International Symposium on Music Information Retrieval, 2004, Barcelona, Spain
The home page of this project can be found at: http://aubio.org/
Questions, comments, suggestions, and contributions are welcome. Use the mailing list: [email protected].
To subscribe to the list, use the mailman form: http://lists.aubio.org/listinfo/aubio-user/
Alternatively, feel free to contact directly the author.
Copyright (C) 2003-2013 Paul Brossier [email protected]
aubio is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.