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<refentry id="midion2">
<indexterm id="IndexMidion2"><primary>midion2</primary></indexterm>
<refentryinfo><title>Real-time MIDI:Note Output</title></refentryinfo>
<refmeta>
<refentrytitle>midion2</refentrytitle>
</refmeta>
<refnamediv>
<refname>midion2</refname>
<refpurpose>
Sends noteon and noteoff messages to the MIDI OUT port.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Sends noteon and noteoff messages to the MIDI OUT port when triggered by a value different than zero.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis><command>midion2</command> kchn, knum, kvel, ktrig</synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>kchn</emphasis> -- MIDI channel (1-16)
</para>
<para>
<emphasis>knum</emphasis> -- MIDI note number (0-127)
</para>
<para>
<emphasis>kvel</emphasis> -- note velocity (0-127)
</para>
<para>
<emphasis>ktrig</emphasis> -- trigger input signal (normally 0)
</para>
<para>
Similar to <link linkend="midion"><citetitle>midion</citetitle></link>, this opcode sends noteon and noteoff messages to the MIDI out port, but only when <emphasis>ktrig</emphasis> is non-zero. This opcode is can work together with the output of the <link linkend="trigger"><citetitle>trigger</citetitle></link> opcode.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="moscil"><citetitle>moscil</citetitle></link>,
<link linkend="midion"><citetitle>midion</citetitle></link>,
<link linkend="noteon"><citetitle>noteon</citetitle></link>,
<link linkend="noteoff"><citetitle>noteoff</citetitle></link>,
<link linkend="noteondur"><citetitle>noteondur</citetitle></link>,
<link linkend="noteondur2"><citetitle>noteondur2</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &namegabriel;</member>
<member>Italy</member>
<member>1998</member>
</simplelist>
</para>
<para>New in Csound version 3.492</para>
<para>Thanks goes to &namerasmus; for pointing out the correct MIDI channel and controller number ranges.</para>
</refsect1>
</refentry>
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