Edit Menu: Labels
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.
- Bill 04Jun13: I'm wondering if we want to expand this page to be similar to Edit Menu: Remove Audio or Labels and Edit Menu: Clip Boundaries to include examples of each command, and to show an example of selecting in the label track only versus selecting in an audio track and the label track. This would also obviate the need for the confusing advice note on the Edit Menu page - "The shortcuts in this table apply the commands shown when used on labeled audio. The shortcuts shown when clicking the link to the command's description are the shortcuts for using that command on a standard audio selection." A big project, I know, but I could undertake it if it is thought useful.
The commands apply to all labeled audio regions that are fully inside a selection drawn in a label track. The selection may extend beyond the label boundaries, but audio that is not labeled and audio whose region label is 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 can mark audio splits at point labels as well as at region labels.
To enable the Labeled Audio commands in the Edit menu, the selection must be made in the Label Track and must fully include (or extend beyond) at least one region label, or must touch (or extend beyond) at least one point label.
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.
The following commands are applied to the audio of all region labels that are fully inside the selection in the label track:
Example using Split Cut
- The selection shown above was created by clicking and dragging in the label track. Applying the 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.
- 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
