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<refentry id="outkpat">
<indexterm id="IndexOutkpat"><primary>outkpat</primary></indexterm>
<refentryinfo><title>Real-time MIDI:Output</title></refentryinfo>
<refmeta>
<refentrytitle>outkpat</refentrytitle>
</refmeta>
<refnamediv>
<refname>outkpat</refname>
<refpurpose>
Sends polyphonic MIDI aftertouch messages at k-rate.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Sends polyphonic MIDI aftertouch messages at k-rate.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis><command>outkpat</command> kchn, knotenum, kvalue, kmin, kmax</synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>kchn</emphasis> -- MIDI channel number (1-16)
</para>
<para>
<emphasis>knotenum</emphasis> -- MIDI note number (used in polyphonic aftertouch messages)
</para>
<para>
<emphasis>kvalue</emphasis> -- floating point value
</para>
<para>
<emphasis>kmin</emphasis> -- minimum floating point value (converted in MIDI integer value 0)
</para>
<para>
<emphasis>kmax</emphasis> -- maximum floating point value (converted in MIDI integer value 127 (7 bit))
</para>
<para>
<emphasis>outkpat</emphasis> (k-rate polyphonic aftertouch output) sends polyphonic aftertouch messages. It works only with MIDI instruments which recognize them. It can drive a different value of a parameter for each note currently active.
</para>
<para>
It can scale the k-value floating-point argument according to the <emphasis>kmin</emphasis> and <emphasis>kmax</emphasis> values. For example: set <emphasis>kmin</emphasis> = 1.0 and <emphasis>kmax</emphasis> = 2.0.
When the <emphasis>kvalue</emphasis> argument receives a 2.0 value, the opcode will send a 127 value to the MIDI OUT device. When the <emphasis>kvalue</emphasis> argument receives a 1.0 value, it will send a 0 value. k-rate opcodes send a message each time the MIDI converted value of argument <emphasis>kvalue</emphasis> changes.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="outiat"><citetitle>outiat</citetitle></link>,
<link linkend="outic14"><citetitle>outic14</citetitle></link>,
<link linkend="outic"><citetitle>outic</citetitle></link>,
<link linkend="outipat"><citetitle>outipat</citetitle></link>,
<link linkend="outipb"><citetitle>outipb</citetitle></link>,
<link linkend="outipc"><citetitle>outipc</citetitle></link>,
<link linkend="outkat"><citetitle>outkat</citetitle></link>,
<link linkend="outkc14"><citetitle>outkc14</citetitle></link>,
<link linkend="outkc"><citetitle>outkc</citetitle></link>,
<link linkend="outkpb"><citetitle>outkpb</citetitle></link>,
<link linkend="outkpc"><citetitle>outkpc</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &namegabriel;</member>
<member>Italy</member>
</simplelist>
</para>
<para>New in Csound version 3.47</para>
<para>Thanks goes to &namerasmus; for pointing out the correct MIDI channel and controller number ranges.</para>
</refsect1>
</refentry>
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