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<div class="refentry" title="unirand">
<a id="unirand"></a>
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<a id="IndexUnirandXClass" class="indexterm"></a>
<a id="IndexUnirand" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">unirand</span>
</h2>
<p>unirand —
Uniform distribution random number generator (positive values only).
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp49789984"></a>
<h2>Description</h2>
<p>
Uniform distribution random number generator (positive values only). This is an x-class noise generator.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp49790832"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>unirand</strong></span> krange</pre>
<pre class="synopsis">ires <span class="command"><strong>unirand</strong></span> krange</pre>
<pre class="synopsis">kres <span class="command"><strong>unirand</strong></span> krange</pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp49818904"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>krange</em></span> -- the range of the random numbers (0 - <span class="emphasis"><em>krange</em></span>).
</p>
<p>
For more detailed explanation of these distributions, see:
</p>
<div class="orderedlist">
<ol class="orderedlist" type="1">
<li class="listitem">
<p>C. Dodge - T.A. Jerse 1985. Computer music. Schirmer books. pp.265 - 286</p>
</li>
<li class="listitem">
<p>D. Lorrain. A panoply of stochastic cannons. In C. Roads, ed. 1989. Music machine . Cambridge, Massachusetts: MIT press, pp. 351 - 379.</p>
</li>
</ol>
</div>
<p>
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp49821832"></a>
<h2>Examples</h2>
<p>
Here is an example of the unirand opcode. It uses the file <a class="ulink" href="examples/unirand.csd" target="_top"><em class="citetitle">unirand.csd</em></a>.
</p>
<div class="example">
<a id="idp49822832"></a>
<p class="title">
<strong>Example 907. Example of the unirand 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 unirand.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">; every run time same values</span>
ktri <span class="opc">unirand</span> 100
<span class="opc">printk</span> .2, ktri <span class="comment">; look </span>
aout <span class="opc">oscili</span> 0.8, 440<span class="op">+</span>ktri, 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">; every run time different values</span>
<span class="ohdr">seed</span> 0
ktri <span class="opc">unirand</span> 100
<span class="opc">printk</span> .2, ktri <span class="comment">; look </span>
aout <span class="opc">oscili</span> 0.8, 440<span class="op">+</span>ktri, 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="comment">; sine wave</span>
<span class="stamnt">f</span> 1 0 16384 10 1
<span class="stamnt">i</span> 1 0 2
<span class="stamnt">i</span> 2 3 2
<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 these:
</p>
<pre class="screen">
i 1 time 0.00067: 81.47237
i 1 time 0.20067: 41.72671
i 1 time 0.40067: 5.96189
i 1 time 0.60067: 91.59912
i 1 time 0.80067: 85.07127
i 1 time 1.00000: 92.50948
i 1 time 1.20067: 98.79347
i 1 time 1.40067: 98.91449
i 1 time 1.60067: 50.37808
i 1 time 1.80000: 72.02497
i 1 time 2.00000: 52.94362
WARNING: Seeding from current time 4007444022
i 2 time 3.00067: 91.86294
i 2 time 3.20067: 94.68759
i 2 time 3.40067: 1.05825
i 2 time 3.60000: 78.57628
i 2 time 3.80067: 27.67408
i 2 time 4.00000: 76.46347
i 2 time 4.20000: 77.10071
i 2 time 4.40067: 34.28921
i 2 time 4.60067: 37.72286
i 2 time 4.80067: 54.96646
i 2 time 5.00000: 11.67566
B 3.000 .. 5.000 T 5.000 TT 5.000 M: 0.80000 0.80000
Score finished in csoundPerform().
</pre>
<p>
</p>
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<div class="refsect1" title="See Also">
<a id="idp49827704"></a>
<h2>See Also</h2>
<p>
<a class="link" href="seed.html" title="seed"><em class="citetitle">seed</em></a>,
<a class="link" href="betarand.html" title="betarand"><em class="citetitle">betarand</em></a>,
<a class="link" href="bexprnd.html" title="bexprnd"><em class="citetitle">bexprnd</em></a>,
<a class="link" href="cauchy.html" title="cauchy"><em class="citetitle">cauchy</em></a>,
<a class="link" href="exprand.html" title="exprand"><em class="citetitle">exprand</em></a>,
<a class="link" href="gauss.html" title="gauss"><em class="citetitle">gauss</em></a>,
<a class="link" href="linrand.html" title="linrand"><em class="citetitle">linrand</em></a>,
<a class="link" href="pcauchy.html" title="pcauchy"><em class="citetitle">pcauchy</em></a>,
<a class="link" href="poisson.html" title="poisson"><em class="citetitle">poisson</em></a>,
<a class="link" href="trirand.html" title="trirand"><em class="citetitle">trirand</em></a>,
<a class="link" href="weibull.html" title="weibull"><em class="citetitle">weibull</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp49833656"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Paris Smaragdis</td>
</tr>
<tr>
<td>MIT, Cambridge</td>
</tr>
<tr>
<td>1995</td>
</tr>
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