<!-- Converted to DocBook/SGML by Kevin Conder -->
<refentry id="vlowres">
  <refmeta>
    <refentrytitle>vlowres</refentrytitle>
  </refmeta>
 
  <refnamediv>
    <refname>vlowres</refname>
    <refpurpose>
      A bank of filters in which the cutoff frequency can be separated under user control.
      <indexterm id="IndexVlowres"><primary>vlowres</primary></indexterm>
    </refpurpose>
  </refnamediv>
 
  <refsect1>
    <title>Description</title>
    <para>
      A bank of filters in which the cutoff frequency can be separated under user control
    </para>
  </refsect1>
 
  <refsect1>
    <title>Syntax</title>
    <synopsis>ar <command>vlowres</command> asig, kfco, kres, iord, ksep</synopsis>
  </refsect1>
 
  <refsect1>
    <title>Initialization</title>
    <para>
      <emphasis>iord</emphasis> -- total number of filters (1 to 10)
    </para>
  </refsect1>
 
  <refsect1>
    <title>Performance</title>
    <para>
      <emphasis>asig</emphasis> -- input signal
    </para>

    <para>
      <emphasis>kfco</emphasis> -- frequency cutoff (not in Hz)
    </para>

    <para>
      <emphasis>ksep</emphasis> -- frequency cutoff separation for each filter
    </para>

    <para>
      <emphasis>vlowres</emphasis> (variable resonant lowpass filter) allows a variable response curve in resonant filters. It can be thought of as a bank of lowpass resonant filters, each with the same resonance, serially connected. The frequency cutoff of each filter can vary with the <emphasis>kcfo</emphasis> and <emphasis>ksep</emphasis> parameters.
    </para>
  </refsect1>

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

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

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

        <programlisting>
<inlinemediaobject>
            <imageobject>
              <imagedata fileref="examples/vlowres.sco" format="linespecific">
            </imageobject>
          </inlinemediaobject>
        </programlisting>
      </example>
    </para>
  </refsect1>
 
  <refsect1>
    <title>Credits</title>
    <para>
      <simplelist>
        <member>Author: &namegabriel;</member>
        <member>Italy</member>
      </simplelist>
    </para>
    <para>Example written by &namekevin;.</para>

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