<!-- Converted to DocBook/SGML by Kevin Conder -->
<refentry id="lowres">
  <refmeta>
    <refentrytitle>lowres</refentrytitle>
  </refmeta>
 
  <refnamediv>
    <refname>lowres</refname>
    <refpurpose>
      Another resonant lowpass filter.
      <indexterm id="IndexLowres"><primary>lowres</primary></indexterm>
    </refpurpose>
  </refnamediv>
 
  <refsect1>
    <title>Description</title>
    <para>
      <emphasis>lowres</emphasis> is a resonant lowpass filter.
    </para>
  </refsect1>
 
  <refsect1>
    <title>Syntax</title>
    <synopsis>ar <command>lowres</command> asig, kcutoff, kresonance [, iskip]</synopsis>
  </refsect1>
 
  <refsect1>
    <title>Initialization</title>
    <para>
      <emphasis>iskip</emphasis> -- initial disposition of internal data space. A zero value will clear the space; a non-zero value will allow previous information to remain. The default value is 0.
    </para>
  </refsect1>
 
  <refsect1>
    <title>Performance</title>
    <para>
      <emphasis>asig</emphasis> -- input signal
    </para>

    <para>
      <emphasis>kcutoff</emphasis> -- filter cutoff frequency point
    </para>

    <para>
      <emphasis>kresonance</emphasis> -- resonance amount
    </para>

    <para>
      <emphasis>lowres</emphasis> is a resonant lowpass filter derived from a &namehans; orchestra. This implementation is much faster than implementing it in Csound language, and it allows <emphasis>kr</emphasis> lower than <emphasis>sr</emphasis>. <emphasis>kcutoff</emphasis> is not in Hz and <emphasis>kresonance</emphasis> is not in dB, so experiment for the finding best results.
    </para>
  </refsect1>

  <refsect1>
    <title>Examples</title>
    <para>
      Here is an example of the lowres opcode. It uses the files <ulink url="examples/lowres.orc"><citetitle>lowres.orc</citetitle></ulink>, <ulink url="examples/lowres.sco"><citetitle>lowres.sco</citetitle></ulink> and <ulink url="examples/beats.wav"><citetitle>beats.wav</citetitle></ulink>.

      <example>
        <title>Example of the lowres opcode.</title>

        <programlisting>
<inlinemediaobject>
            <imageobject>
              <imagedata fileref="examples/lowres.orc" format="linespecific">
            </imageobject>
          </inlinemediaobject>
        </programlisting>

        <programlisting>
<inlinemediaobject>
            <imageobject>
              <imagedata fileref="examples/lowres.sco" format="linespecific">
            </imageobject>
          </inlinemediaobject>
        </programlisting>
      </example>
    </para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para>
      <link linkend="lowresx"><citetitle>lowresx</citetitle></link>
    </para>
  </refsect1>
 
  <refsect1>
    <title>Credits</title>
    <para>
      <simplelist>
        <member>Author: &namegabriel; (adapted by &namejohn;)</member>
        <member>Italy</member>
      </simplelist>
    </para>
    <para>Example written by &namekevin;.</para>

    <para>New in Csound version 3.49</para>
  </refsect1>
</refentry>
