source: doc/aubioonset.sgml @ 0178c65

<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [

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  <!-- Fill in your name for FIRSTNAME and SURNAME. -->
  <!ENTITY dhfirstname "<firstname>Paul</firstname>">
  <!ENTITY dhsurname   "<surname>Brossier</surname>">
  <!-- Please adjust the date whenever revising the manpage. -->
  <!ENTITY dhdate      "<date>December 1, 2004</date>">
  <!-- SECTION should be 1-8, maybe w/ subsection other parameters are
       allowed: see man(7), man(1). -->
  <!ENTITY dhsection   "<manvolnum>1</manvolnum>">
  <!ENTITY dhemail     "<email>piem@aubio.org</email>">
  <!ENTITY dhusername  "Paul Brossier">
  <!ENTITY dhucpackage "<refentrytitle>AUBIOONSET</refentrytitle>">
  <!ENTITY dhpackage   "aubioonset">

  <!ENTITY debian      "<productname>Debian</productname>">
  <!ENTITY gnu         "<acronym>GNU</acronym>">
  <!ENTITY gpl         "&gnu; <acronym>GPL</acronym>">
]>

<refentry>
  <refentryinfo>
    <address>
      &dhemail;
    </address>
    <author>
      &dhfirstname;
      &dhsurname;
    </author>
    <copyright>
      <year>2003</year>
      <holder>&dhusername;</holder>
    </copyright>
    &dhdate;
  </refentryinfo>
  <refmeta>
    &dhucpackage;

    &dhsection;
  </refmeta>
  <refnamediv>
    <refname>&dhpackage;</refname>

    <refpurpose>a command line tool for real time onset extraction</refpurpose>

  </refnamediv>
  <refsynopsisdiv>
    <cmdsynopsis>
      <command>&dhpackage; <parameter>[options] [-i soundfile]</parameter></command>
    </cmdsynopsis>
  </refsynopsisdiv>
  <refsect1>
    <title>DESCRIPTION</title>

    <para><command>&dhpackage;</command> attempts to detect onset times, the
    beginning of discreted sound events, in audio signals.</para>

    <para>When started without an input file argument
    (<option>--input</option>), <command>&dhpackage;</command> creates jack
    input and output ports. When an input file is given, the results are given
    on the console.</para>

  </refsect1>
  <refsect1>
    <title>OPTIONS</title>

    <para>This program follows the usual GNU command line syntax, with long
    options starting with two dashes (`-').  A summary of options is included
    below.</para>

<variablelist>
  <varlistentry>
  <term><option>-i</option>
  <option>--input filein</option></term>
  <listitem>

  <para>Run analysis on this audio file. Most common uncompressed formats are
  supported.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-o</option>
  <option>--output fileout</option></term>
  <listitem>

  <para>Save results in this file. The file will be created on the model of the
  input file. Results are marked by a short wood-block sample.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-O</option>
  <option>--onset mode</option></term>
  <listitem>

  <para>The onset detection function to run. Available functions are
  <emphasis>complexdomain</emphasis>, <emphasis>hfc</emphasis>,
  <emphasis>phase</emphasis>, <emphasis>specdiff</emphasis>,
  <emphasis>energy</emphasis>, <emphasis>kl</emphasis> and
  <emphasis>mkl</emphasis>. By default, both Kullback Liebler (kl) and complex
  domain are used in parallel.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-t</option>
  <option>--threshold value</option></term>
  <listitem>

  <para>Set the threshold value for the onset peak picking. Typical values are
  within <literal>0.001</literal> and <literal>0.900</literal>. Default is
  <literal>0.1</literal>. <emphasis>Lower</emphasis> threshold values imply 
  <emphasis>more</emphasis> onsets detected. Try <literal>0.3</literal> in
  case of over-detections.</para>

  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-j</option>
  <option>--jack</option></term>
  <listitem>
  <para>Run in jack mode (default when started without input file) and creates a midi output.</para>
  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-v</option>
  <option>--verbose</option></term>
  <listitem>
  <para>Show results on the console (default).</para>
  </listitem>
  </varlistentry>
  <varlistentry>
  <term><option>-h</option>
  <option>--help</option></term>
  <listitem>
  <para>Show summary of options.</para>
  </listitem>
  </varlistentry>
</variablelist>

  </refsect1>
  <refsect1>
  <title>BUGS</title>

  <para>For now the program has only been tested on audio signals sampled at
  44.1&nbsp;kHz.</para>

  </refsect1>

  <refsect1>
    <title>SEE ALSO</title>

    <para>
    <command>aubiotrack</command>(1)
    <command>aubionotes</command>(1)
    <command>aubiocut</command>(1)
    <command>aubiopitch</command>(1)
    </para>

  </refsect1>

  <refsect1>
    <title>AUTHOR</title>

    <para>This manual page was written by &dhusername; (&dhemail;). Permission
    is granted to copy, distribute and/or modify this document under the terms
    of the &gnu; General Public License, Version 3 any later version published
    by the Free Software Foundation.</para>

    <para>On Debian systems, the complete text of the GNU General Public
    License can be found in /usr/share/common-licenses/GPL.</para>

  </refsect1>
</refentry>

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