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<refentry id="maxabs">
<indexterm id="IndexMaxabs"><primary>maxabs</primary></indexterm>
<refentryinfo><title>Signal Modifiers:Comparators and Accumulators</title></refentryinfo>
<refmeta>
<refentrytitle>maxabs</refentrytitle>
</refmeta>
<refnamediv>
<refname>maxabs</refname>
<refpurpose>
Produces a signal that is the maximum of the absolute values of any number of input signals.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
The <emphasis>maxabs</emphasis> opcode takes any number of a-rate or k-rate signals as input (all of the same rate), and outputs a signal at the same rate that is the maximum of all of the inputs. It is identical to the <emphasis>max</emphasis> opcode except that it takes the absolute value of each input before comparing them. Therefore, the output is always non-negative. For a-rate signals, the inputs are compared one sample at a time (i.e. <emphasis>maxabs</emphasis> does not scan an entire ksmps period of a signal for its local maximum as the <emphasis>max_k</emphasis> opcode does).
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis>amax <command>maxabs</command> ain1 [, ain2] [, ain3] [, ain4] [...]</synopsis>
<synopsis>kmax <command>maxabs</command> kin1 [, kin2] [, kin3] [, kin4] [...]</synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>ain1, ain2, ...</emphasis> -- a-rate signals to be compared.
</para>
<para>
<emphasis>kin1, kin2, ...</emphasis> -- k-rate signals to be compared.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="minabs"><citetitle>minabs</citetitle></link>,
<link linkend="max"><citetitle>max</citetitle></link>,
<link linkend="min"><citetitle>min</citetitle></link>,
<link linkend="maxaccum"><citetitle>maxaccum</citetitle></link>,
<link linkend="minaccum"><citetitle>minaccum</citetitle></link>,
<link linkend="maxabsaccum"><citetitle>maxabsaccum</citetitle></link>,
<link linkend="minabsaccum"><citetitle>minabsaccum</citetitle></link>,
<link linkend="max_k"><citetitle>max_k</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &nameanthony;</member>
<member>March 2006</member>
</simplelist>
</para>
<para>New in Csound version 5.01</para>
</refsect1>
</refentry>
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