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NAME
aubiotrack - a command line tool to extract musical beats from audio signals
SYNOPSIS
aubiotrack source
aubiotrack [[-i] source] [-o sink]
[-r rate] [-B win] [-H hop]
[-s sil] [-m]
[-j] [-v] [-h]
DESCRIPTION
aubiotrack attempts to detect beats, the time where one would intuitively be
tapping his foot.
When started with an input source (-i/--input), the detected beats are given
on the console, in seconds.
When started without an input source, or with the jack option (-j/--jack),
aubiotrack starts in jack mode.
OPTIONS
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 sound.
-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 512.
-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.
-h, --help Print a short help message and exit.
-v, --verbose Be verbose.
BEAT TRACKING METHODS
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.
SEE ALSO
aubioonset(1),
aubiopitch(1),
aubionotes(1),
aubioquiet(1),
aubiomfcc(1),
and
aubiocut(1).
AUTHOR
This manual page was written by Paul Brossier <piem@aubio.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.