| 1 | NAME |
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| 2 | aubiotrack - a command line tool to extract musical beats from audio signals |
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| 3 | |
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| 4 | SYNOPSIS |
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| 5 | |
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| 6 | aubiotrack source |
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| 7 | aubiotrack [[-i] source] [-o sink] |
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| 8 | [-r rate] [-B win] [-H hop] |
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| 9 | [-T time-format] |
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| 10 | [-s sil] [-m] |
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| 11 | [-j] [-N miditap-note] [-V miditap-velo] |
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| 12 | [-v] [-h] |
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| 13 | |
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| 14 | DESCRIPTION |
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| 15 | |
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| 16 | aubiotrack attempts to detect beats, the time where one would intuitively be |
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| 17 | tapping his foot. |
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| 18 | |
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| 19 | When started with an input source (-i/--input), the detected beats are given |
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| 20 | on the console, in seconds. |
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| 21 | |
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| 22 | When started without an input source, or with the jack option (-j/--jack), |
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| 23 | aubiotrack starts in jack mode. |
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| 24 | |
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| 25 | OPTIONS |
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| 26 | |
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| 27 | This program follows the usual GNU command line syntax, with long options |
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| 28 | starting with two dashes (--). A summary of options is included below. |
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| 29 | |
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| 30 | -i, --input source Run analysis on this audio file. Most uncompressed and |
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| 31 | compressed are supported, depending on how aubio was built. |
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| 32 | |
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| 33 | -o, --output sink Save results in this file. The file will be created on the |
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| 34 | model of the input file. Beats are marked by a short wood-block like sound. |
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| 35 | |
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| 36 | -r, --samplerate rate Fetch the input source, resampled at the given |
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| 37 | sampling rate. The rate should be specified in Hertz as an integer. If 0, |
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| 38 | the sampling rate of the original source will be used. Defaults to 0. |
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| 39 | |
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| 40 | -B, --bufsize win The size of the buffer to analyze, that is the length |
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| 41 | of the window used for spectral and temporal computations. Defaults to 512. |
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| 42 | |
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| 43 | -H, --hopsize hop The number of samples between two consecutive analysis. |
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| 44 | Defaults to 256. |
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| 45 | |
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| 46 | -s, --silence sil Set the silence threshold, in dB, under which the pitch |
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| 47 | will not be detected. A value of -20.0 would eliminate most onsets but the |
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| 48 | loudest ones. A value of -90.0 would select all onsets. Defaults to -90.0. |
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| 49 | |
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| 50 | -m, --mix-input Mix source signal to the output signal before writing to |
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| 51 | sink. |
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| 52 | |
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| 53 | -f, --force-overwrite Overwrite output file if it already exists. |
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| 54 | |
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| 55 | -j, --jack Use Jack input/output. You will need a Jack connection |
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| 56 | controller to feed aubio some signal and listen to its output. |
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| 57 | |
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| 58 | -N, --miditap-note Override note value for MIDI tap. Defaults to 69. |
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| 59 | |
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| 60 | -V, --miditap-velop Override velocity value for MIDI tap. Defaults to 65. |
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| 61 | |
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| 62 | -T, --timeformat format Set time format (samples, ms, seconds). Defaults to |
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| 63 | seconds. |
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| 64 | |
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| 65 | -h, --help Print a short help message and exit. |
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| 66 | |
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| 67 | -v, --verbose Be verbose. |
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| 68 | |
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| 69 | BEAT TRACKING METHODS |
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| 70 | |
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| 71 | Aubio currently implements one the causal beat tracking algorithm designed by |
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| 72 | Matthew Davies and described in the following articles: |
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| 73 | |
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| 74 | Matthew E. P. Davies and Mark D. Plumbley. Causal tempo tracking of audio. |
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| 75 | In Proceedings of the International Symposium on Music Information Retrieval |
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| 76 | (ISMIR), pages 164169, Barcelona, Spain, 2004. |
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| 77 | |
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| 78 | Matthew E. P. Davies, Paul Brossier, and Mark D. Plumbley. Beat tracking |
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| 79 | towards automatic musical accompaniment. In Proceedings of the Audio |
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| 80 | Engineering Society 118th Convention, Barcelona, Spain, May 2005. |
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| 81 | |
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| 82 | SEE ALSO |
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| 83 | |
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| 84 | aubioonset(1), |
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| 85 | aubiopitch(1), |
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| 86 | aubionotes(1), |
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| 87 | aubioquiet(1), |
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| 88 | aubiomfcc(1), |
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| 89 | and |
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| 90 | aubiocut(1). |
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| 91 | |
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| 92 | AUTHOR |
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| 93 | |
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| 94 | This manual page was written by Paul Brossier <piem@aubio.org>. Permission is |
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| 95 | granted to copy, distribute and/or modify this document under the terms of |
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| 96 | the GNU General Public License as published by the Free Software Foundation, |
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| 97 | either version 3 of the License, or (at your option) any later version. |
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