manual/include/strip-silence-from-audio-regions.html

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<figure>
<img src="/images/strip-silence-window.png" alt="The Strip Silence window">
<figcaption>
The Strip Silence window
</figcaption>
</figure>
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<p>
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The <dfn>Strip Silence</dfn> tool allows to remove the parts of one or multiple
regions that are below a user-defined silence threshold. It does <em>not</em>
destroy the underlying audio, but trims the regions according to the silence
threshold parameter. The edit applies to all selected regions, allowing batch
processing.
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</p>
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<p>
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The window, accessible either through the <kbd class="menu">Region &gt; Edit &gt; Strip
Silence</kbd> menu or <kbd class="menu"><kbd class="mouse">right</kbd> click on a region
&gt; <em>Name_Of_The_Region</em> &gt; Edit &gt; Strip Silence</kbd>is made of:
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</p>
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<table class="dl">
<tr><th><dfn>Threshold</dfn></th>
<td>The audio level under which the audio is considered silent (in <abbr
title="Decibels relative to Full Scale">dBFS</abbr>)</td></tr>
<tr><th><dfn>Minimum length</dfn></th>
<td>A minimum number of samples for Ardour to create a split. Under this
number, the region won't be sliced</td></tr>
<tr><th><dfn>Fade length</dfn></th>
<td>Ardour adds fades, both in and out, to the trimmed regions, to the created
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region (so the sliced regions are longer by both the in and out fades duration,
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expressed in samples)</td></tr>
<tr><th>A progress bar</th>
<td>showing the time Ardour takes to compute the trimming based on the current
parameters</td></tr>
</table>
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<p>
Changing any parameter in the window is reflected in the main editor: the silent
segments are highlighted and the number and durations of the shortest segments is
displayed, helping fine-tune the parameters.
</p>
<figure>
<img src="/images/strip-silence-audio.png" alt="strip silence: view of the audio">
<img src="/images/strip-silence-after.png" alt="strip silence: view of the audio after">
<figcaption>
Strip Silence : a view of the audio while changing the parameters, and after treatment
</figcaption>
</figure>
<p class="note">The minimum length for silence can be useful when editing very
percussive material and just needing to automatically trim the ends of a region.
</p>
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