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.