- a command line tool to extract musical beats from audio
aubiotrack [[-i] source] [-o sink]
[ -r rate] [-B win] [-H hop]
[ -T time-format]
[ -s sil] [-m]
[ -j] [-N miditap-note] [-V miditap-velo]
[ -v] [-h]
attempts to detect beats, the time where one would intuitively
be tapping his foot.
When started with an input source
detected beats are given on the console, in seconds.
When started without an input source
, or with the jack option
starts in jack mode.
This program follows the usual GNU command line syntax, with long options
starting with two dashes (--). A summary of options is included below.
- -i, --input source
- Run analysis on this audio file. Most uncompressed and
compressed are supported, depending on how aubio was built.
- -o, --output sink
- Save results in this file. The file will be created on the
model of the input file. Beats are marked by a short wood-block like
- -r, --samplerate rate
- Fetch the input source, resampled at the given
sampling rate. The rate should be specified in Hertz as an
integer. If 0, the sampling rate of the original source will
be used. Defaults to 0.
- -B, --bufsize win
- The size of the buffer to analyze, that is the length of
the window used for spectral and temporal computations. Defaults to
- -H, --hopsize hop
- The number of samples between two consecutive analysis.
Defaults to 256.
- -s, --silence sil
- Set the silence threshold, in dB, under which the pitch
will not be detected. A value of -20.0 would eliminate most onsets
but the loudest ones. A value of -90.0 would select all onsets.
Defaults to -90.0.
- -m, --mix-input
- Mix source signal to the output signal before
writing to sink.
- -f, --force-overwrite
- Overwrite output file if it already exists.
- -j, --jack
- Use Jack input/output. You will need a Jack connection
controller to feed aubio some signal and listen to its output.
- -N, --miditap-note
- Override note value for MIDI tap. Defaults to 69.
- -V, --miditap-velop
- Override velocity value for MIDI tap. Defaults to 65.
- -T, --timeformat format
- Set time format (samples, ms, seconds). Defaults to
- -h, --help
- Print a short help message and exit.
- -v, --verbose
- Be verbose.
Aubio currently implements one the causal beat tracking algorithm designed by
Matthew Davies and described in the following articles:
Matthew E. P. Davies and Mark D. Plumbley. Causal tempo tracking of audio. In
Proceedings of the International Symposium on Music Information Retrieval
(ISMIR), pages 164169, Barcelona, Spain, 2004.
Matthew E. P. Davies, Paul Brossier, and Mark D. Plumbley. Beat tracking towards
automatic musical accompaniment. In Proceedings of the Audio Engeeniring
Society 118th Convention, Barcelona, Spain, May 2005.
(1), and aubiocut
This manual page was written by Paul Brossier <firstname.lastname@example.org>. Permission
is granted to copy, distribute and/or modify this document 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.