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<h2>
<span class="refentrytitle">random</span>
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<p>random —
Generates a controlled pseudo-random number series between min and max values.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp39898048"></a>
<h2>Description</h2>
<p>
Generates is a controlled pseudo-random number series between min and max values.
</p>
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<div class="refsect1" title="Syntax">
<a id="idp39898848"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>random</strong></span> kmin, kmax</pre>
<pre class="synopsis">ires <span class="command"><strong>random</strong></span> imin, imax</pre>
<pre class="synopsis">kres <span class="command"><strong>random</strong></span> kmin, kmax</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp39910880"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>imin</em></span> -- minimum range limit
</p>
<p>
<span class="emphasis"><em>imax</em></span> -- maximum range limit
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp39947928"></a>
<h2>Performance</h2>
<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>
The <span class="emphasis"><em>random</em></span> opcode is similar to <a class="link" href="linrand.html" title="linrand"><em class="citetitle">linrand</em></a> and <a class="link" href="trirand.html" title="trirand"><em class="citetitle">trirand</em></a> but sometimes I [Gabriel Maldonado] find it more convenient because allows the user to set arbitrary minimum and maximum values.
</p>
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<div class="refsect1" title="Examples">
<a id="idp39950944"></a>
<h2>Examples</h2>
<p>
Here is an example of the random opcode. It uses the file <a class="ulink" href="examples/random.csd" target="_top"><em class="citetitle">random.csd</em></a>.
</p>
<div class="example">
<a id="idp39951896"></a>
<p class="title">
<strong>Example 699. Example of the random 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 RT audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o random.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 <span class="comment">;same values every time</span>
krnd <span class="opc">random</span> 100, 1000
<span class="opc">printk</span> .5, krnd <span class="comment">; look </span>
aout <span class="opc">oscili</span> 0.8, 440<span class="op">+</span>krnd, 1 <span class="comment">; & listen</span>
<span class="opc">outs</span> aout, aout
<span class="oblock">endin</span>
<span class="oblock">instr</span> 2 <span class="comment">;different values every time</span>
<span class="ohdr">seed</span> 0
krnd <span class="opc">random</span> 100, 1000 <span class="comment">; seed from system clock</span>
<span class="opc">printk</span> .5, krnd <span class="comment">; look </span>
aout <span class="opc">oscili</span> 0.8, 440<span class="op">+</span>krnd, 1 <span class="comment">; & listen</span>
<span class="opc">outs</span> aout, aout
<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">i</span> 1 0 1
<span class="stamnt">i</span> 2 2 1
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
Its output should include lines like:
</p>
<pre class="screen">
i 1 time 0.00067: 894.58566
i 1 time 0.50000: 748.44281
i 1 time 1.00000: 328.29916
WARNING: Seeding from current time 1656666052
i 2 time 2.00067: 690.71466
i 2 time 2.50000: 459.42445
i 2 time 3.00000: 100.85594
</pre>
<p>
</p>
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<div class="refsect1" title="See Also">
<a id="idp39955192"></a>
<h2>See Also</h2>
<p>
<a class="link" href="linrand.html" title="linrand"><em class="citetitle">linrand</em></a>,
<a class="link" href="randomh.html" title="randomh"><em class="citetitle">randomh</em></a>,
<a class="link" href="randomi.html" title="randomi"><em class="citetitle">randomi</em></a>,
<a class="link" href="trirand.html" title="trirand"><em class="citetitle">trirand</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp39957728"></a>
<h2>Credits</h2>
<p>Author: Gabriel Maldonado</p>
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