<chapter id='intonation-chapter'>
    <title>Intonation</title>

    <indexterm><primary>intonation</primary></indexterm>


    <para>
      This section gives an overview of the various programs within the
      speech tools library that deal in intonation processing.  These
      programs are still a little unstable though some have
      been used for a number of years.
    </para>



    <sect1>
      <title>Pitch tracking</title>

      <indexterm><primary>intonation</primary><secondary>pitch tracking</secondary></indexterm>
      <indexterm><primary>analysis</primary><secondary>pitch tracking</secondary></indexterm>
      <indexterm><primary>pitch tracking</primary></indexterm>

      <para>
	The executable <filename>pda</filename> may be use for pitch tracking
	speech files.  It is based on Paul Bagshaw's pitch tracker
	@cite{bagshaw93}.
      </para>

    </sect1>

    <sect1>
      <title>Tilt</title>


      <para>
	The speech tools library provides code for the analysis and synthesis of
	F0 contours using the Tilt intonation model.
      </para>


    </sect1>

    <sect1>
      <title>RFC</title>


      <para>
	to be written
      </para>





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