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]
                  [-T time-format]
                  [-s sil] [-m]
                  [-j] [-N miditap-note] [-V miditap-velo]
                  [-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.

       -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 seconds.

       -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 Engineering 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.