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<div class="refentry" title="pchmidi">
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<h2>
<span class="refentrytitle">pchmidi</span>
</h2>
<p>pchmidi —
Get the note number of the current MIDI event, expressed in pitch-class units.
</p>
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<div class="refsect1" title="Description">
<a id="idp35604968"></a>
<h2>Description</h2>
<p>
Get the note number of the current MIDI event, expressed in pitch-class units.
</p>
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<div class="refsect1" title="Syntax">
<a id="idp35605656"></a>
<h2>Syntax</h2>
<pre class="synopsis">ipch <span class="command"><strong>pchmidi</strong></span></pre>
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<div class="refsect1" title="Performance">
<a id="idp35616040"></a>
<h2>Performance</h2>
<p>
Get the note number of the current MIDI event, expressed in pitch-class units for local processing.
</p>
<div class="note" title="pchmidi vs. pchmidinn" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note: pchmidi vs. pchmidinn">
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<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
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<th align="left">pchmidi vs. pchmidinn</th>
</tr>
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<td align="left" valign="top">
<p>
The <span class="emphasis"><em>pchmidi</em></span> opcode only produces meaningful results in a Midi-activated note (either real-time or from a Midi score with the -F flag). With <span class="emphasis"><em>pchmidi</em></span>, the Midi note number value is taken from the Midi event that is internally associated with the instrument instance. On the other hand, the <span class="emphasis"><em>pchmidinn</em></span> opcode may be used in any Csound instrument instance whether it is activated from a Midi event, score event, line event, or from another instrument. The input value for <span class="emphasis"><em>pchmidinn</em></span> might for example come from a p-field in a textual score or it may have been retrieved from the real-time Midi event that activated the current note using the <span class="emphasis"><em>notnum</em></span> opcode.
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<div class="refsect1" title="Examples">
<a id="idp35619080"></a>
<h2>Examples</h2>
<p>
Here is an example of the pchmidi opcode. It uses the file <a class="ulink" href="examples/pchmidi.csd" target="_top"><em class="citetitle">pchmidi.csd</em></a>.
</p>
<div class="example">
<a id="idp35658976"></a>
<p class="title">
<strong>Example 573. Example of the pchmidi 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>
<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 MIDI in</span>
-odac -iadc -d -M0 <span class="comment">;;;RT audio I/O with MIDI in</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o pchmidi.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</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> 1
<span class="comment">; Instrument #1.</span>
<span class="oblock">instr</span> 1
<span class="comment">; This example expects MIDI note inputs on channel 1</span>
i1 <span class="opc">pchmidi</span>
<span class="opc">print</span> i1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">;Dummy f-table to give time for real-time MIDI events</span>
<span class="stamnt">f</span> 0 8000
<span class="stamnt">e</span>
<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="idp35661240"></a>
<h2>See Also</h2>
<p>
<a class="link" href="aftouch.html" title="aftouch"><em class="citetitle">aftouch</em></a>,
<a class="link" href="ampmidi.html" title="ampmidi"><em class="citetitle">ampmidi</em></a>,
<a class="link" href="cpsmidi.html" title="cpsmidi"><em class="citetitle">cpsmidi</em></a>,
<a class="link" href="cpsmidib.html" title="cpsmidib"><em class="citetitle">cpsmidib</em></a>,
<a class="link" href="midictrl.html" title="midictrl"><em class="citetitle">midictrl</em></a>,
<a class="link" href="notnum.html" title="notnum"><em class="citetitle">notnum</em></a>,
<a class="link" href="octmidi.html" title="octmidi"><em class="citetitle">octmidi</em></a>,
<a class="link" href="octmidib.html" title="octmidib"><em class="citetitle">octmidib</em></a>,
<a class="link" href="pchbend.html" title="pchbend"><em class="citetitle">pchbend</em></a>,
<a class="link" href="pchmidib.html" title="pchmidib"><em class="citetitle">pchmidib</em></a>,
<a class="link" href="veloc.html" title="veloc"><em class="citetitle">veloc</em></a>,
<a class="link" href="cpsmidinn.html" title="cpsmidinn"><em class="citetitle">cpsmidinn</em></a>,
<a class="link" href="octmidinn.html" title="octmidinn"><em class="citetitle">octmidinn</em></a>,
<a class="link" href="pchmidinn.html" title="pchmidinn"><em class="citetitle">pchmidinn</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp35668496"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Barry L. Vercoe - Mike Berry</td>
</tr>
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<td>MIT - Mills</td>
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<td>May 1997</td>
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<p>
</p>
<p>Example written by Kevin Conder.</p>
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