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<refentry id="pvsgain">
<indexterm id="IndexPvsgain"><primary>pvsgain</primary></indexterm>
<refentryinfo><title>Spectral Processing:Streaming</title></refentryinfo>
<refmeta>
<refentrytitle>pvsgain</refentrytitle>
</refmeta>
<refnamediv>
<refname>pvsgain</refname>
<refpurpose>
Scale the amplitude of a pv stream.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Scale the amplitude of a pv stream.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis>fsig <command>pvsgain</command> fsigin, kgain </synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>fsig</emphasis> -- output pv stream
</para>
<para>
<emphasis>fsigin</emphasis> -- input pv stream
</para>
<para>
<emphasis>kgain</emphasis> -- amplitude scaling (defaults to 1).
</para>
<warning>
<para>
It is unsafe to use the same f-variable for both input and output of pvs opcodes. Using the same one might lead to undefined behavior on some opcodes. Use a different one on the left and right sides of the opcode.
</para>
</warning>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Here is an example of the use of the <emphasis>pvsgain</emphasis> opcode. It uses the file <ulink url="examples/pvsgain.csd"><citetitle>pvsgain.csd</citetitle></ulink>.
<example>
<title>Example of the <emphasis>pvsgain</emphasis> opcode.</title>
<para>See the sections <link linkend="UsingRealTime"><citetitle>Real-time Audio</citetitle></link> and <link linkend="CommandFlags"><citetitle>Command Line Flags</citetitle></link> for more information on using command line flags.</para>
<xi:include href="examples-xml/pvsgain.csd.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</example>
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="pvsanal"><citetitle>pvsanal</citetitle></link>,
<link linkend="pvsynth"><citetitle>pvsynth</citetitle></link>,
<link linkend="pvsadsyn"><citetitle>pvsadsyn</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &namevictor;</member>
<member>2011 </member>
</simplelist>
</para>
<para>New plugin in version 5</para>
<para>2011</para>
</refsect1>
</refentry>
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