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<refentry id="seed">
<indexterm id="IndexSeed"><primary>seed</primary></indexterm>
<refentryinfo><title>Signal Generators:Random (Noise) Generators</title></refentryinfo>
<refmeta>
<refentrytitle>seed</refentrytitle>
</refmeta>
<refnamediv>
<refname>seed</refname>
<refpurpose>
Sets the global seed value.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Sets the global seed value for all <emphasis>x-class noise generators</emphasis>, as well as other opcodes that use a random call, such as <link linkend="grain"><citetitle>grain</citetitle></link>.
</para>
<note>
<title>Please Note</title>
<para><link linkend="rand"><citetitle>rand</citetitle></link>, <link linkend="randh"><citetitle>randh</citetitle></link>, <link linkend="randi"><citetitle>randi</citetitle></link>, <link linkend="rnd"><citetitle>rnd(x)</citetitle></link> and <link linkend="birnd"><citetitle>birnd(x)</citetitle></link> are not affected by seed.</para>
</note>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis><command>seed</command> ival</synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
Use of <emphasis>seed</emphasis> will provide predictable results from an orchestra using with random generators, when required from multiple performances.
</para>
<para>
When specifying a seed value, <emphasis>ival</emphasis> should be an integer between 0 and 2<superscript>32</superscript>. If <emphasis>ival</emphasis> = 0, the value of <emphasis>ival</emphasis> will be derived from the system clock.
</para>
</refsect1>
</refentry>
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