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<td valign="top" style="font-size: 13px"> <h2 id="email-title-heading" style="font-size: 16px; line-height: 20px; min-height: 20px; margin: 0; padding: 0"> <a href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+12+Function_DENOISE" style="color: #326ca6; text-decoration: none"> <img class="icon" src="cid:page-icon" alt="" style="border: 0; padding: 0 5px 0 0; text-align: left; vertical-align: middle" /> <strong style="font-size:16px;line-height:20px;vertical-align:top;">Asterisk 12 Function_DENOISE</strong> </a> </h2> </td>
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<h1 id="Asterisk12Function_DENOISE-DENOISE%28%29">DENOISE()</h1>
<h3 id="Asterisk12Function_DENOISE-Synopsis">Synopsis</h3>
<p style="font-size: 13px">Apply noise reduction to audio on a channel.</p>
<h3 id="Asterisk12Function_DENOISE-Description">Description</h3>
<p style="font-size: 13px">The DENOISE function will apply noise reduction to audio on the channel that it is executed on. It is very useful for noisy analog lines, especially when adjusting gains or using AGC. Use <code style="font-size: 13px">rx</code> for audio received from the channel and <code style="font-size: 13px">tx</code> to apply the filter to the audio being sent to the channel.</p>
<p style="font-size: 13px">Examples:</p>
<p style="font-size: 13px">exten => 1,1,Set(DENOISE(rx)=on)</p>
<p style="font-size: 13px">exten => 1,2,Set(DENOISE(tx)=off)</p>
<h3 id="Asterisk12Function_DENOISE-Syntax">Syntax</h3>
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<pre style="font-size: 13px">DENOISE(channeldirection)</pre>
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<h5 id="Asterisk12Function_DENOISE-Arguments">Arguments</h5>
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<li style="font-size: 13px"> <code style="font-size: 13px">channeldirection</code> - This can be either <code style="font-size: 13px">rx</code> or <code style="font-size: 13px">tx</code> the values that can be set to this are either <code style="font-size: 13px">on</code> and <code style="font-size: 13px">off</code> </li>
</ul>
<h3 id="Asterisk12Function_DENOISE-ImportVersion">Import Version</h3>
<p style="font-size: 13px">This documentation was imported from Asterisk Version SVN-branch-12-r397911</p>
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