Edit Menu: Labels

The items in this cascading menu provide tools to manipulate labelled audio

Labeled Audio

ToDo-2 Gale 16Sep12: The special case of "Split" when labels are joined or overlapped is not mentioned (currently, split lines are only placed at the borders of the single concatenated region, but Steve suggests the split lines should be placed for all labels).

• Gale 07Jan13: Split lines are now placed at each joined label but if any part of a label overlaps another, then the overlapped labels are treated as a single label. This requires documenting,
• Gale 16Jan13: Added some bulleted text that may resolve the ToDo-2. Please check.
  • Steve 16Jan13: I think that Region labels that touch each other without overlapping, are treated as separate labeled regions in all cases, so no need to list them.
  • Gale 16Jan13: What about Silence Audio? No split lines are drawn at the boundaries of the touching region labels.
  • Steve 16Jan13: "Silence Audio" does not create split lines.
• ToDo the two images below should ideally be on the same platform as other images on this page.

The Edit > Labeled Audio commands apply to all labeled audio regions that are fully inside a selection drawn in a label track. Region labels that are only partly within the selection will not be acted on.

• Region labels that touch each other without overlapping are treated as separate labeled regions.
• If two or more region labels overlap, they are treated as one labeled region.
• Labeled Audio Split also applies to point labels.

To enable the Labeled Audio commands in the Edit menu, the selection region must be drawn in the label track and must completely include one or more labels. If none of the audio tracks are included in the selection, the Labeled Audio commands apply to all audio tracks in the project. However if you include only certain audio tracks in the selection, the Labeled Audio commands will only affect those selected audio tracks.

When Sync-Locked Tracks is on, the menu commands Labeled Audio > Cut and Labeled Audio > Delete are disabled.

The following commands are applied to the audio of all region labels that are fully inside the selection in the label track:

Gale 16Jan13: ToDo I think it would be good to make the below commands anchor links to the text on the Edit Menu sub-pages that explain what the commands do.

• Peter 25Jan13: done - and changed formatting for consistency with main Edit Menu page (new version).

• Cut,      Split Cut,      Copy
  
• Delete,      Split Delete,      Silence Audio
  
• Split,      Join,      Detach at Silences
  

The selection shown above was created by clicking and dragging in the label track. Applying the Edit > Labeled Audio > Split Cut command results in this:

Result: audio has been cut only in the regions where the labels are fully inside the selection. Part of the first label is outside the selection so its audio is not affected by the Split Cut operation. The final two labels overlap each other, so are treated as one label.

Gale 14Jan13: @Steve, are you fully confident that you disabled *all* the Join functionality of labeled audio for point labels? I found it hard to find any joins working for regions or points ( I think this is an existing bug you extended further). I "thought" I did find one case where a point label was joined, so I left Join in for points. I may be wrong, though.

• Steve 14Jan13: "Labeled Audio Regions > Split" is the only special case where point labels are used. (comments 8 to 10 of bug 600). It is not really logical that Labeled Regions should ever act on point labels, but we agreed that it was useful to make an exception for "Split".
• Gale 16Jan13: Is Join useful for labeled audio (regions)?
  • Steve 16Jan13: I've replied here: http://forum.audacityteam.org/viewtopic.php?p=203421#p203421

If the selection in the label track touches or extends over any point labels, the Split command is applied to the point labels.

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