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<refentry id="opk">
<indexterm id="IndexK"><primary>a</primary></indexterm>
<refentryinfo><title>Signal Modifiers:Sample Level Operators</title></refentryinfo>
<refmeta>
<refentrytitle>k</refentrytitle>
</refmeta>
<refnamediv>
<refname>k</refname>
<refpurpose>
Converts a i-rate parameter to an k-rate value.
Or converts an a-rate value to a k-rate value by down-sampling.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Converts an i-rate value to control rate, for example to be used
with <link linkend="rnd"><citetitle>rnd()</citetitle></link> and
<link linkend="birnd"><citetitle>birnd()</citetitle></link> to generate random numbers at k-rate.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis><command>k</command>(x) (i-rate args only)</synopsis>
<synopsis><command>k</command>(x) (a-rate args only)</synopsis>
<para>
where the argument within the parentheses may be an
expression. Value converters perform arithmetic translation from
units of one kind to units of another. The result can then be a
term in a further expression.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="opi"><citetitle>i</citetitle></link>
<link linkend="opa"><citetitle>a</citetitle></link>
</para>
<para> More information on this opcode: <ulink url="http://www.csounds.com/journal/issue10/CsoundRates.html"><citetitle>http://www.csounds.com/journal/issue10/CsoundRates.html</citetitle></ulink> , written by Andrés Cabrera </para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>Author: &nameistvan;</para>
<para>New in version Csound 5.00</para>
<para>Author: &namejohn;</para>
<para>arate to krate new in version Csound 6.00</para>
</refsect1>
</refentry>
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