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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">
<a id="idm281472916327832"></a>
<h2>Description</h2>
<p>
Assigns a MIDI channel number to a Csound instrument.
</p>
</div>
<div class="refsect1">
<a id="idm281472916252888"></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">
<a id="idm281472916249592"></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">
<a id="idm281472916244088"></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">
<a id="idm281472916236536"></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="idm281472916234680"></a>
<p class="title">
<strong>Example 520. 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>
<div class="refsect1">
<a id="idm281472740362360"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac -+rtmidi=virtual -M0 <span class="c1">;;;realtime audio out and realtime midi in </span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">;-o massign.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
gi<span class="n">engine</span> <span class="nb">fluidEngine</span>
<span class="c1">; soundfont path to manual/examples</span>
i<span class="n">sfnum</span> <span class="nb">fluidLoad</span> <span class="s">"19Trumpet.sf2"</span><span class="p">,</span> gi<span class="n">engine</span><span class="p">,</span> <span class="mi">1</span>
<span class="nb">fluidProgramSelect</span> gi<span class="n">engine</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> i<span class="n">sfnum</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">56</span>
<span class="nb">massign</span> <span class="mi">0</span><span class="p">,</span><span class="mi">0</span> <span class="c1">;disable triggering of all instruments on all channels, but</span>
<span class="nb">massign</span> <span class="mi">12</span><span class="p">,</span><span class="mi">10</span> <span class="c1">;assign instr. 10 to midi channel 12</span>
<span class="nb">massign</span> <span class="mi">3</span><span class="p">,</span><span class="mi">30</span> <span class="c1">;assign instr. 30 to midi channel 3</span>
<span class="kd">instr</span> <span class="nf">10</span> <span class="c1">; soundfont only on midi channel 12</span>
<span class="nb">mididefault</span> <span class="mi">60</span><span class="p">,</span> <span class="nb">p3</span>
<span class="nb">midinoteonkey</span> <span class="nb">p4</span><span class="p">,</span> <span class="nb">p5</span> <span class="c1">; in midi notes</span>
i<span class="n">key</span> <span class="nb">init</span> <span class="nb">p4</span>
i<span class="n">vel</span> <span class="nb">init</span> <span class="nb">p5</span>
<span class="nb">fluidNote</span> gi<span class="n">engine</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> i<span class="n">key</span><span class="p">,</span> i<span class="n">vel</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">30</span> <span class="c1">; FM-oscilator only on midi channel 3</span>
<span class="nb">mididefault</span> <span class="mi">60</span><span class="p">,</span> <span class="nb">p3</span>
<span class="nb">midinoteoncps</span> <span class="nb">p4</span><span class="p">,</span> <span class="nb">p5</span> <span class="c1">; in Hertz</span>
i<span class="n">cps</span> <span class="nb">init</span> <span class="nb">p4</span>
i<span class="n">amp</span> <span class="nb">init</span> <span class="nb">p5</span>
i<span class="n">amp</span> <span class="o">=</span> i<span class="n">amp</span><span class="o">/</span><span class="mi">127</span>
k<span class="n">env</span> <span class="nb">madsr</span> <span class="mf">0.5</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mf">0.5</span>
a<span class="n">sig</span> <span class="nb">foscil</span> i<span class="n">amp</span><span class="o">*</span>k<span class="n">env</span><span class="p">,</span> i<span class="n">cps</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mf">1.414</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">1</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">99</span> <span class="c1">; output sound from fluidengine</span>
i<span class="n">mvol</span> <span class="nb">init</span> <span class="mi">7</span>
a<span class="n">L</span><span class="p">,</span> a<span class="n">R</span> <span class="nb">fluidOut</span> gi<span class="n">engine</span>
<span class="nb">outs</span> a<span class="n">L</span><span class="o">*</span>i<span class="n">mvol</span><span class="p">,</span> a<span class="n">R</span><span class="o">*</span>i<span class="n">mvol</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; sine</span>
<span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">16384</span> <span class="mi">10</span> <span class="mi">1</span>
<span class="nb">i</span> <span class="mi">10</span> <span class="mi">0</span> <span class="mi">2</span> <span class="mi">60</span> <span class="mi">100</span> <span class="c1">;one note on the trumpet in midi and...</span>
<span class="nb">i</span> <span class="mi">30</span> <span class="mi">2</span> <span class="mi">2</span> <span class="mi">220</span> <span class="mi">80</span> <span class="c1">;one FM note in Hz</span>
<span class="nb">i</span> <span class="mi">99</span> <span class="mi">0</span> <span class="mi">60</span> <span class="c1">;stay active for 60 sec.</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472916230488"></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">
<a id="idm281472916228440"></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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