2 aubiotrack - a command line tool to extract musical beats from audio signals
7 aubiotrack [[-i] source] [-o sink]
8 [-r rate] [-B win] [-H hop]
15 aubiotrack attempts to detect beats, the time where one would intuitively be
18 When started with an input source (-i/--input), the detected beats are given
19 on the console, in seconds.
21 When started without an input source, or with the jack option (-j/--jack),
22 aubiotrack starts in jack mode.
26 This program follows the usual GNU command line syntax, with long options
27 starting with two dashes (--). A summary of options is included below.
29 -i, --input source Run analysis on this audio file. Most uncompressed and
30 compressed are supported, depending on how aubio was built.
32 -o, --output sink Save results in this file. The file will be created on the
33 model of the input file. Beats are marked by a short wood-block like sound.
35 -r, --samplerate rate Fetch the input source, resampled at the given
36 sampling rate. The rate should be specified in Hertz as an integer. If 0,
37 the sampling rate of the original source will be used. Defaults to 0.
39 -B, --bufsize win The size of the buffer to analyze, that is the length
40 of the window used for spectral and temporal computations. Defaults to 512.
42 -H, --hopsize hop The number of samples between two consecutive analysis.
45 -s, --silence sil Set the silence threshold, in dB, under which the pitch
46 will not be detected. A value of -20.0 would eliminate most onsets but the
47 loudest ones. A value of -90.0 would select all onsets. Defaults to -90.0.
49 -m, --mix-input Mix source signal to the output signal before writing to
52 -f, --force-overwrite Overwrite output file if it already exists.
54 -j, --jack Use Jack input/output. You will need a Jack connection
55 controller to feed aubio some signal and listen to its output.
57 -n, --miditap-note Override note value for MIDI tap. Defaults to 69.
59 -V, --miditap-velop Override velocity value for MIDI tap. Defaults to 65.
61 -T, --timeformat format Set time format (samples, ms, seconds). Defaults to
64 -h, --help Print a short help message and exit.
66 -v, --verbose Be verbose.
70 Aubio currently implements one the causal beat tracking algorithm designed by
71 Matthew Davies and described in the following articles:
73 Matthew E. P. Davies and Mark D. Plumbley. Causal tempo tracking of audio.
74 In Proceedings of the International Symposium on Music Information Retrieval
75 (ISMIR), pages 164169, Barcelona, Spain, 2004.
77 Matthew E. P. Davies, Paul Brossier, and Mark D. Plumbley. Beat tracking
78 towards automatic musical accompaniment. In Proceedings of the Audio
79 Engeeniring Society 118th Convention, Barcelona, Spain, May 2005.
93 This manual page was written by Paul Brossier <piem@aubio.org>. Permission is
94 granted to copy, distribute and/or modify this document under the terms of
95 the GNU General Public License as published by the Free Software Foundation,
96 either version 3 of the License, or (at your option) any later version.