System information
Time Format
The format used to display the time ruler and selection times. These include Time, Seconds, Frames, and all
standard SMPTE frame rates. The status format is set for each sound file individually.
Track
A discrete timeline for audio data. Audio events sit on audio tracks and determine when a sound starts and
stops. Multiple audio tracks are mixed together to give you a composite sound that you hear through your
speakers.
Trim/Crop
A function that will delete all data in a sound file outside of the current selection. For more information, see
"Trimming events" on page 147.
U
µ-Law
µ-Law (mu-Law) is a companded compression algorithm for voice signals defined by the Geneva
Recommendations (G.711). The G.711 recommendation defines µ-Law as a method of encoding 16-bit
PCM signals into a non-linear 8-bit format. The algorithm is commonly used in European and Asian
telecommunications. µ-Law is very similar to A-Law, however, each uses a slightly different coder and
decoder.
Undo Buffer
This is the temporary file created before you do any processing to a project. This undo buffer allows the
ability to rewrite previous versions of the project if you decide you do not like changes you have made to
the project. This undo buffer is erased when the file is closed or the Clear Undo History command is
invoked.
Undo/Redo
These commands allow you to change a project back to a previous state, when you do not like the changes
you have made, or reapply the changes after you have undone them. The ability to Undo/Redo is only
limited by the size of your hard drive. See"Undo Buffer" on page 648.
Undo/Redo History
A list of all of the functions that have been performed to a file that are available to be undone or redone.
Undo/Redo History gives you the ability to undo or redo multiple functions as well as preview the functions
for quick A/B-ing of the processed and unprocessed material. To display the history list, click the down-
arrow next to the Undo and Redo buttons.
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