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<h2>
<span class="refentrytitle">chnget</span>
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<p>chnget —
Reads data from the software bus.
</p>
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<div class="refsect1" title="Description">
<a id="id2782397"></a>
<h2>Description</h2>
<p>
Reads data from a channel of the inward named software bus.
Implies declaring the channel with <span class="emphasis"><em>imode</em></span>=1 (see also
<a class="link" href="chn.html" title="chn"><em class="citetitle">chn_k, chn_a, and chn_S</em></a>).
</p>
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<div class="refsect1" title="Syntax">
<a id="id2782458"></a>
<h2>Syntax</h2>
<pre class="synopsis">ival <span class="command"><strong>chnget</strong></span> Sname</pre>
<pre class="synopsis">kval <span class="command"><strong>chnget</strong></span> Sname</pre>
<pre class="synopsis">aval <span class="command"><strong>chnget</strong></span> Sname</pre>
<pre class="synopsis">Sval <span class="command"><strong>chnget</strong></span> Sname</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="id2783342"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>Sname</em></span> -- a string that identifies a channel
of the named software bus to read.
</p>
<p>
<span class="emphasis"><em>ival</em></span> -- the control value read at i-time.
</p>
<p>
<span class="emphasis"><em>Sval</em></span> -- the string value read at i-time.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="id2783371"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kval</em></span> -- the control value read at performance time.
</p>
<p>
<span class="emphasis"><em>aval</em></span> -- the audio signal read at performance time.
</p>
</div>
<div class="refsect1" title="Example">
<a id="id2783393"></a>
<h2>Example</h2>
<p>
The example shows the software bus being used as an asynchronous
control signal to select a filter cutoff. It assumes that an
external program that has access to the API is feeding the values.
</p>
<div class="informalexample">
<pre class="programlisting">
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 100
<span class="ohdr">ksmps</span> <span class="op">=</span> 1
<span class="oblock">instr</span> 1
kc <span class="opc">chnget</span> "cutoff"
a1 <span class="opc">oscil</span> p4, p5, 100
a2 <span class="opc">lowpass2</span> a1, kc, 200
<span class="opc">out</span> a2
<span class="oblock">endin</span>
</pre>
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<div class="refsect1" title="Credits">
<a id="id2783485"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Istvan Varga</td>
</tr>
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<td>2005</td>
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