<!-- Converted to DocBook/SGML by Kevin Conder -->
<refentry id="spechist">
  <refmeta>
    <refentrytitle>spechist</refentrytitle>
  </refmeta>
 
  <refnamediv>
    <refname>spechist</refname>
    <refpurpose>
      Accumulates the values of successive spectral frames.
      <indexterm id="IndexSpechist"><primary>spechist</primary></indexterm>
    </refpurpose>
  </refnamediv>
 
  <refsect1>
    <title>Description</title>
    <para>
      Accumulates the values of successive spectral frames.
    </para>
  </refsect1>
 
  <refsect1>
    <title>Syntax</title>
    <synopsis>wsig <command>spechist</command> wsigin</synopsis>
  </refsect1>
 
  <refsect1>
    <title>Performance</title>
    <para>
      <emphasis>wsigin</emphasis> -- the input spectra.
    </para>

    <para>
      Accumulates the values of successive spectral frames. At each new frame of <emphasis>wsigin</emphasis>, the accumulations-to-date in each magnitude track are written to the output spectrum. This unit thus provides a running <emphasis>histogram</emphasis> of spectral distribution.
    </para>
  </refsect1>
 
  <refsect1>
    <title>Examples</title>
    <para>
      <informalexample>
        <programlisting>
  wsig2    <emphasis>specdiff</emphasis>         wsig1               ; sense onsets 
  wsig3    <emphasis>specfilt</emphasis>         wsig2, 2            ; absorb slowly 
           <emphasis>specdisp</emphasis>         wsig2, .1           ; &amp; display both spectra 
           <emphasis>specdisp</emphasis>         wsig3, .1
        </programlisting>
      </informalexample>
    </para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para>
      <link linkend="specaddm"><citetitle>specaddm</citetitle></link>,
      <link linkend="specdiff"><citetitle>specdiff</citetitle></link>,
      <link linkend="specfilt"><citetitle>specfilt</citetitle></link>,
      <link linkend="specscal"><citetitle>specscal</citetitle></link>
    </para>
  </refsect1>
</refentry>
