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<h2>
<span class="refentrytitle">trandom</span>
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<p>trandom —
Generates a controlled pseudo-random number series between min and max values according to a trigger.
</p>
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<div class="refsect1" title="Description">
<a id="idp49196464"></a>
<h2>Description</h2>
<p>
Generates a controlled pseudo-random number series between min and max values at k-rate whenever the trigger parameter is different to 0.
</p>
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<div class="refsect1" title="Syntax">
<a id="idp49197216"></a>
<h2>Syntax</h2>
<pre class="synopsis">kout <span class="command"><strong>trandom</strong></span> ktrig, kmin, kmax</pre>
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<div class="refsect1" title="Performance">
<a id="idp49207752"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>ktrig</em></span> -- trigger (opcode produces a new random number whenever this value is not 0.
</p>
<p>
<span class="emphasis"><em>kmin</em></span> -- minimum range limit
</p>
<p>
<span class="emphasis"><em>kmax</em></span> -- maximum range limit
</p>
<p>
<span class="emphasis"><em>trandom</em></span> is almost identical to <a class="link" href="random.html" title="random"><em class="citetitle">random</em></a> opcode, except <span class="emphasis"><em>trandom</em></span> updates its output with a new random value only when the <span class="emphasis"><em>ktrig</em></span> argument is triggered (i.e. whenever it is not zero).
</p>
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<div class="refsect1" title="Examples">
<a id="idp49211536"></a>
<h2>Examples</h2>
<p>
Here is an example of the trandom opcode. It uses the file <a class="ulink" href="examples/trandom.csd" target="_top"><em class="citetitle">trandom.csd</em></a>.
</p>
<div class="example">
<a id="idp49212480"></a>
<p class="title">
<strong>Example 890. Example of the trandom 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 <span class="comment">;;;realtime audio out</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 trandom.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="ohdr">seed</span> 0 <span class="comment">; every run time different values </span>
<span class="oblock">instr</span> 1
kmin <span class="opc">init</span> 0 <span class="comment">;random number between 0 and 220</span>
kmax <span class="opc">init</span> 220
ktrig <span class="op">=</span> p4
k1 <span class="opc">trandom</span> ktrig, kmin, kmax
<span class="opc">printk2</span> k1 <span class="comment">;print when k1 changes</span>
asig <span class="opc">poscil</span> .4, 220<span class="op">+</span>k1, 1 <span class="comment">;if triggered, add random values to frequency</span>
<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 4096 10 1
<span class="stamnt">i</span> 1 0 2 0 <span class="comment">;not triggered</span>
<span class="stamnt">i</span> 1 + 2 1 <span class="comment">;triggered</span>
<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="idp49247192"></a>
<h2>See also</h2>
<p>
<a class="link" href="random.html" title="random"><em class="citetitle">random</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp49248208"></a>
<h2>Credits</h2>
<p>Written by Gabriel Maldonado.</p>
<p>New in Csound 5.06</p>
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