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<div class="refentry" title="outkpc">
<a id="outkpc"></a>
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<a id="IndexOutkpc" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">outkpc</span>
</h2>
<p>outkpc —
Sends MIDI program change messages at k-rate.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp34587768"></a>
<h2>Description</h2>
<p>
Sends MIDI program change messages at k-rate.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp34588424"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>outkpc</strong></span> kchn, kprog, kmin, kmax</pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp34589448"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kchn</em></span> -- MIDI channel number (1-16)
</p>
<p>
<span class="emphasis"><em>kprog</em></span> -- program change number in floating point
</p>
<p>
<span class="emphasis"><em>kmin</em></span> -- minimum floating point value (converted in MIDI integer value 0)
</p>
<p>
<span class="emphasis"><em>kmax</em></span> -- maximum floating point value (converted in MIDI integer value 127 (7 bit))
</p>
<p>
<span class="emphasis"><em>outkpc</em></span> (k-rate program change output) sends program change messages. It works only with MIDI instruments which recognize them. These opcodes can drive a different value of a parameter for each note currently active.
</p>
<p>
It can scale the k-value floating-point argument according to the <span class="emphasis"><em>kmin</em></span> and <span class="emphasis"><em>kmax</em></span> values. For example: set <span class="emphasis"><em>kmin</em></span> = 1.0 and <span class="emphasis"><em>kmax</em></span> = 2.0.
When the <span class="emphasis"><em>kvalue</em></span> argument receives a 2.0 value, the opcode will send a 127 value to the MIDI OUT device. When the <span class="emphasis"><em>kvalue</em></span> 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 <span class="emphasis"><em>kvalue</em></span> changes.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp34642168"></a>
<h2>Examples</h2>
<p>
Here is an example of the outkpc opcode. It uses the file <a class="ulink" href="examples/outkpc.csd" target="_top"><em class="citetitle">outkpc.csd</em></a>.
</p>
<div class="example">
<a id="idp34643136"></a>
<p class="title">
<strong>Example 547. Example of the outkpc opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<p>This example generates a program change and a note on Csound's MIDI output port whenever a note is received on channel 1. Be sure to have something connected to Csound's MIDI out port to hear the result.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d -M0 -Q1<span class="comment">;;;RT audio I/O with MIDI in</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="comment">; Example by Giorgio Zucco 2007</span>
kprogram <span class="opc">init</span> 0
<span class="oblock">instr</span> 1 <span class="comment">;Triggered by MIDI notes on channel 1</span>
ifund <span class="opc">notnum</span>
ivel <span class="opc">veloc</span>
idur <span class="op">=</span> 1
<span class="comment">; Sends a MIDI program change message according to</span>
<span class="comment">; the triggering note's velocity</span>
<span class="opc">outkpc</span> 1 ,ivel ,0 ,127
<span class="opc">noteondur</span> 1 ,ifund ,ivel ,idur
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Dummy ftable</span>
<span class="stamnt">f</span> 0 60
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
Here is another example of the outkpc opcode. It uses the file <a class="ulink" href="examples/outkpc_fltk.csd" target="_top"><em class="citetitle">outkpc_flkt.csd</em></a>.
</p>
<div class="example">
<a id="idp34646168"></a>
<p class="title">
<strong>Example 548. Example of the outkpc opcode using FLTK.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d -M0 -Q1<span class="comment">;;;RT audio I/O with MIDI in</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="comment">; Example by Giorgio Zucco 2007</span>
<span class="opc">FLpanel</span> "outkpc",200,100,90,90<span class="comment">;start of container</span>
gkpg, gihandle <span class="opc">FLcount</span> "Midi<span class="op">-</span>Program change",0,127,1,5,1,152,40,16,23,<span class="op">-</span>1
<span class="opc">FLpanelEnd</span>
<span class="opc">FLrun</span>
<span class="oblock">instr</span> 1
ktrig <span class="opc">changed</span> gkpg
<span class="opc">outkpc</span> ktrig,gkpg,0,127
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Run instrument 1 for 60 seconds</span>
<span class="stamnt">i</span> 1 0 60
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
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<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="idp34648456"></a>
<h2>See Also</h2>
<p>
<a class="link" href="outiat.html" title="outiat"><em class="citetitle">outiat</em></a>,
<a class="link" href="outic14.html" title="outic14"><em class="citetitle">outic14</em></a>,
<a class="link" href="outic.html" title="outic"><em class="citetitle">outic</em></a>,
<a class="link" href="outipat.html" title="outipat"><em class="citetitle">outipat</em></a>,
<a class="link" href="outipb.html" title="outipb"><em class="citetitle">outipb</em></a>,
<a class="link" href="outipc.html" title="outipc"><em class="citetitle">outipc</em></a>,
<a class="link" href="outkat.html" title="outkat"><em class="citetitle">outkat</em></a>,
<a class="link" href="outkc14.html" title="outkc14"><em class="citetitle">outkc14</em></a>,
<a class="link" href="outkc.html" title="outkc"><em class="citetitle">outkc</em></a>,
<a class="link" href="outkpat.html" title="outkpat"><em class="citetitle">outkpat</em></a>,
<a class="link" href="outkpb.html" title="outkpb"><em class="citetitle">outkpb</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp34654272"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado</td>
</tr>
<tr>
<td>Italy</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.47</p>
<p>Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.</p>
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