Apple Logic Express 9 - Manual (Page 556)

When you turn on Transient Editing mode, the audio file is analyzed for transient events,
and all detected transients are marked in the audio file.
Detected transients
The level of transient detection confidence is based on the clarity of the transients. If an
audio file does not have clear, sharp transients, transients will be detected with a lower
level of confidence. However, you can choose to display more or less transients using the
plus (+) and minus (−) buttons in the Sample Editor. These buttons are visible when you
are in Transient Editing mode.
• + button: Increases the number of transients in the selected area of the audio file, or
across the entire audio file. You can also use the “Increase Number of Transients” key
command, default assignment: Command-plus (+).
556 Chapter 17 Editing Audio in the Sample Editor