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<h2>
<span class="refentrytitle">q Statement</span>
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<p>q statement —
This statement may be used to quiet an instrument.
</p>
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<div class="refsect1" title="Description">
<a id="idp76761824"></a>
<h2>Description</h2>
<p>
This statement may be used to quiet an instrument.
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>q</strong></span> p1 p2 p3</pre>
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<div class="refsect1" title="Performance">
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>p1</em></span> -- Instrument number to mute/unmute.
</p>
<p>
<span class="emphasis"><em>p2</em></span> -- Action time in beats.
</p>
<p>
<span class="emphasis"><em>p3</em></span> -- determines whether the instrument is muted/unmuted. The value of 0 means the instrument is muted, other values mean it is unmuted.
</p>
<p>
Note that this does not affect instruments that are already running at time <span class="emphasis"><em>p2</em></span>. It blocks any attempt to start one afterwards.
</p>
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<div class="refsect1" title="Examples">
<a id="idp76800848"></a>
<h2>Examples</h2>
<p>
Here is an example of the q statement. It uses the file <a class="ulink" href="examples/q.csd" target="_top"><em class="citetitle">q.csd</em></a>.
</p>
<div class="example">
<a id="idp76801760"></a>
<p class="title">
<strong>Example 1028. Example of the q statement.</strong>
</p>
<div class="example-contents">
<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 <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if RT audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o q.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
<span class="oblock">instr</span> 1
aenv <span class="opc">expseg</span> .01, p3<span class="op">*</span>0.25, 1, p3<span class="op">*</span>0.75, 0.01
asig <span class="opc">poscil3</span> .8<span class="op">*</span>aenv, p4, 1
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">f</span> 1 0 16384 10 1<span class="comment">;sine wave</span>
<span class="stamnt">s</span>
<span class="stamnt">q</span> 1 6 0 <span class="comment">;mute at 6 seconds in this section</span>
<span class="stamnt">i</span> 1 0 2 110
<span class="stamnt">i</span> 1 3 2 220
<span class="stamnt">i</span> 1 6 2 440
<span class="stamnt">i</span> 1 9 2 880
<span class="stamnt">s</span>
<span class="stamnt">q</span> 1 6 1 <span class="comment">;unmute again at 6 seconds in this section</span>
<span class="stamnt">i</span> 1 0 2 110
<span class="stamnt">i</span> 1 3 2 220
<span class="stamnt">i</span> 1 6 2 440
<span class="stamnt">i</span> 1 9 2 880
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
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