44 lines
1.9 KiB
HTML
44 lines
1.9 KiB
HTML
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<p>
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<a href="@@the-track-and-bus-group-list">Track Groups</a> have
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a property titled <kbd class="option">Select</kbd> which, if enabled, cause
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Ardour to propagate a region selection in one track of a group to the
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<dfn>corresponding regions</dfn> of the other tracks in that group.
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</p>
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<p>
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This can be particularly useful when an instrument has been recorded using
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multiple microphones (e.g. a drum kit): by enabling the <kbd class="option">Select</kbd>
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property for the group, selecting a region in one of the tracks, Ardour will select
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the corresponding region in every other track of the group, which in turn means
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that a subsequent edit operation will affect all the tracks together.
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</p>
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<h2>How Ardour Decides Which Regions are "Corresponding"</h2>
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<p>
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Regions in different tracks are considered to be corresponding for the purposes
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of sharing <dfn>selection</dfn> if they satisfy <em>all</em> the following criteria:
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</p>
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<ol>
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<li>each region starts at the <dfn>same offset</dfn> within its source file,</li>
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<li>each region is located at the <dfn>same position</dfn> on the timeline, and</li>
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<li>each region has the <dfn>same length</dfn>.</li>
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</ol>
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<h2>Overlap Correspondence</h2>
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<p>
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Sometimes, the rules outlined above are too strict to get Ardour to consider regions
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as corresponding. Regions may have been trimmed to slightly different lengths,
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or positioned slightly differently, and this will cause Ardour to not select
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regions in other grouped tracks.
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</p>
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<p>
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In this case, changing
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<kbd class="menu">Edit > Preferences > Editor > Regions in
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active edit groups are edited together:</kbd> to <kbd
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class="menu">whenever they overlap in time</kbd> will allow regions in different
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tracks to be considered equivalent for the purposes of selection if they
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<dfn>overlap</dfn>. This is much more flexible and will cover almost all of the
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cases that the fixed rules above might make cumbersome.
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</p>
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