manual/include/waveform-display.html

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<p>
The display of <dfn>waveforms</dfn> (or, more correctly, <dfn>peak
envelopes</dfn>, since the actual waveform is only visible at the highest
zoom levels) is configurable via the <kbd
class="menu">Edit &gt; Preferences &gt; Editor</kbd> dialog, to support
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different usecases and user preferences. The following options are
available:
</p>
<dl class="wide-table">
<dt>Show waveforms in regions</dt>
<dd>By default, Ardour draws waveforms within audio regions. Disable this
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option to hide them.</dd>
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<dt>Waveform scale</dt>
<dd>
<dl>
<dt>Linear</dt>
<dd>This is the traditional <dfn>linear</dfn> (1:1) display of the
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peak envelope, or, at higher zoom levels, the individual samples.</dd>
<dt>Logarithmic</dt>
<dd>Alternatively, you can use a <dfn>logarithmic</dfn> display of the
peak envelope. This will give you a better idea of program loudness (it is similar
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to dBs) and plot soft passages more clearly, which is useful for soft
recordings or small track height.</dd>
</dl>
</dd>
<dt>Waveform shape</dt>
<dd>
<dl>
<dt>Traditional</dt>
<dd>The <dfn>zero</dfn> line appears in the middle of the display and waveforms
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appear as positive and negative peaks above <em>and</em> below.</dd>
<dt>Rectified</dt>
<dd>The zero line appears at the bottom of the display and waveforms appear
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as absolute peaks <em>above</em> the line only.</dd>
</dl>
</dd>
</dl>