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<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
<!ENTITY % BOOK_ENTITIES SYSTEM "./entities.ent">
%BOOK_ENTITIES;
]>
<section id="sn-invert-polarity">
<title>Inverting the Polarity of a Track</title>
<para>
The polarity of a track can be inverted in the Mixer Window by clicking
on the track name button of a Mixer Strip and choosing
<menuchoice><guimenu>Invert Polarity</guimenu></menuchoice>.
</para>
<mediaobject>
<imageobject>
<imagedata fileref="images/invert_polarity.png"/>
</imageobject>
</mediaobject>
<para>
When the polarity of a track is inverted a <literal>Ø</literal> will
appear before the track name in the Mixer Strip.
</para>
<para>
This could be used to correct the polarity of an input signal due to
incorrect wiring or to prevent two signals that are out of phase with
respect to each other resulting in cancellation when mixing.
</para>
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