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<h2><a href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+11+Function_PITCH_SHIFT">Asterisk 11 Function_PITCH_SHIFT</a></h2>
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<h1><a name="Asterisk11Function_PITCH_SHIFT-PITCHSHIFT%28%29"></a>PITCH_SHIFT()</h1>
<h3><a name="Asterisk11Function_PITCH_SHIFT-Synopsis"></a>Synopsis</h3>
<p>Pitch shift both tx and rx audio streams on a channel.</p>
<h3><a name="Asterisk11Function_PITCH_SHIFT-Description"></a>Description</h3>
<p>Examples:</p>
<p>exten => 1,1,Set(PITCH_SHIFT(tx)=highest); raises pitch an octave</p>
<p>exten => 1,1,Set(PITCH_SHIFT(rx)=higher) ; raises pitch more</p>
<p>exten => 1,1,Set(PITCH_SHIFT(both)=high) ; raises pitch</p>
<p>exten => 1,1,Set(PITCH_SHIFT(rx)=low) ; lowers pitch</p>
<p>exten => 1,1,Set(PITCH_SHIFT(tx)=lower) ; lowers pitch more</p>
<p>exten => 1,1,Set(PITCH_SHIFT(both)=lowest) ; lowers pitch an octave</p>
<p>exten => 1,1,Set(PITCH_SHIFT(rx)=0.8) ; lowers pitch</p>
<p>exten => 1,1,Set(PITCH_SHIFT(tx)=1.5) ; raises pitch</p>
<h3><a name="Asterisk11Function_PITCH_SHIFT-Syntax"></a>Syntax</h3>
<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre>PITCH_SHIFT(channel direction)</pre>
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<h5><a name="Asterisk11Function_PITCH_SHIFT-Arguments"></a>Arguments</h5>
<ul>
<li>channel direction - Direction can be either <tt>rx</tt>, <tt>tx</tt>, or <tt>both</tt>. The direction can either be set to a valid floating point number between 0.1 and 4.0 or one of the enum values listed below. A value of 1.0 has no effect. Greater than 1 raises the pitch. Lower than 1 lowers the pitch.The pitch amount can also be set by the following values
<ul>
<li>highest</li>
<li>higher</li>
<li>high</li>
<li>low</li>
<li>lower</li>
<li>lowest</li>
</ul>
</li>
</ul>
<h3><a name="Asterisk11Function_PITCH_SHIFT-ImportVersion"></a>Import Version</h3>
<p>This documentation was imported from Asterisk Version SVN-trunk-r370322</p>
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