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<h2>
<span class="refentrytitle">massign</span>
</h2>
<p>massign —
Assigns a MIDI channel number to a Csound instrument.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp30303384"></a>
<h2>Description</h2>
<p>
Assigns a MIDI channel number to a Csound instrument.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp30290200"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>massign</strong></span> ichnl, insnum[, ireset]</pre>
<pre class="synopsis"><span class="command"><strong>massign</strong></span> ichnl, "insname"[, ireset]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp30291904"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ichnl</em></span> -- MIDI channel number (1-16).
</p>
<p>
<span class="emphasis"><em>insnum</em></span> -- Csound orchestra instrument number.
If zero or negative, the channel is muted (i.e. it doesn't trigger a csound instrument, though information will still be received by opcodes like <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a>).
</p>
<p>
<span class="emphasis"><em><span class="quote">“<span class="quote">insname</span>”</span></em></span> -- A string (in double-quotes) representing a named instrument.
</p>
<p>
<span class="emphasis"><em>ireset</em></span> -- If non-zero resets the
controllers; default is to reset.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp30342040"></a>
<h2>Performance</h2>
<p>
Assigns a MIDI channel number to a Csound instrument. Also useful to make sure a certain instrument (if its number is from 1 to 16) will not be triggered by midi noteon messages (if using something <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a> to interpret midi information). In this case set <span class="emphasis"><em>insnum</em></span> to 0 or a negative number.
</p>
<p>
If <span class="emphasis"><em>ichan</em></span> is set to 0, the value of <span class="emphasis"><em>insnum</em></span> is used for all channels. This way you can route all MIDI channels to a single Csound instrument. You can also disable triggering of instruments from MIDI note events from all channels with the following line:
</p>
<pre class="programlisting">massign 0,0</pre>
<p>
This can be useful if you are doing all MIDI evaluation within Csound with an always on instrument(e.g. using <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a> and <a class="link" href="turnon.html" title="turnon"><em class="citetitle">turnon</em></a>) to avoid doubling the instrument when a note is played.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp30346184"></a>
<h2>Examples</h2>
<p>
Here is an example of the massign opcode. It uses the file <a class="ulink" href="examples/massign.csd" target="_top"><em class="citetitle">massign.csd</em></a>.
</p>
<div class="example">
<a id="idp30347160"></a>
<p class="title">
<strong>Example 439. Example of the massign 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>
-odac -+rtmidi=virtual -M0 <span class="comment">;;;realtime audio out and realtime midi in </span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">;-o massign.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
giengine <span class="opc">fluidEngine</span>
<span class="comment">; soundfont path to manual/examples</span>
isfnum <span class="opc">fluidLoad</span> "19Trumpet.sf2", giengine, 1
<span class="opc">fluidProgramSelect</span> giengine, 1, isfnum, 0, 56
<span class="ohdr">massign</span> 0,0 <span class="comment">;disable triggering of all instruments on all channels, but</span>
<span class="ohdr">massign</span> 12,10 <span class="comment">;assign instr. 10 to midi channel 12</span>
<span class="ohdr">massign</span> 3,30 <span class="comment">;assign instr. 30 to midi channel 3</span>
<span class="oblock">instr</span> 10
<span class="comment">; only on midi channel 12</span>
<span class="opc">mididefault</span> 60, p3
<span class="opc">midinoteonkey</span> p4, p5
ikey <span class="opc">init</span> p4
ivel <span class="opc">init</span> p5
<span class="opc">fluidNote</span> giengine, 1, ikey, ivel
<span class="oblock">endin</span>
<span class="oblock">instr</span> 30
<span class="comment">; only on midi channel 3</span>
icps <span class="opc">cpsmidi</span>
asig <span class="opc">oscils</span> .6, icps, 0
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="oblock">instr</span> 99
<span class="comment">; output sound from fluidengine</span>
imvol <span class="opc">init</span> 7
asigl, asigr <span class="opc">fluidOut</span> giengine
<span class="opc">outs</span> asigl<span class="op">*</span>imvol, asigr<span class="op">*</span>imvol
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 10 0 2 60 100 <span class="comment">;play one note from score and...</span>
<span class="stamnt">i</span> 30 2 2
<span class="stamnt">i</span> 99 0 60 <span class="comment">;play virtual keyboard for 60 sec.</span>
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp30349440"></a>
<h2>See Also</h2>
<p>
<a class="link" href="ctrlinit.html" title="ctrlinit"><em class="citetitle">ctrlinit</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp30350456"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Barry L. Vercoe - Mike Berry</td>
</tr>
<tr>
<td>MIT, Cambridge, Mass.</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.47</p>
<p><span class="emphasis"><em>ireset</em></span> parameter new in Csound5</p>
<p>Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel range.</p>
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