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More About Committing
Commit is complex. Here are some examples intended to clarify its workings.
1.
A 30 second recording has just been made, and then the first ten seconds are trimmed off. Now we go the
Space menu and press commit while the cursor is touching this clip, with Handles set to zero. The effect will
be to remove the first ten seconds of audio data, with that disk space becoming free. If Handles was set to 2
seconds, only the first 8 seconds of data would be removed. Attempting to enlarge the clip using the Trim
command on the Grab menu will fail, because there is no more data in the Master Recording.
2.
A 30 second recording has been made, and this time the last 15 seconds of the resulting clip (Clip A) are
covered by pasting another clip (Clip B) on top. Now we go to the Space menu, move the transport so that
Clip A is touching the cursor, and press Commit. Now erase Clip B, and it can be seen that the part of Clip A
that was underneath Clip B has been removed. This part of the data on disk has also been removed, minus
the Handle.
3.
This time we do the same thing, but we make a copy of Clip A on another track. After committing the
original Clip A and erasing Clip B, we find that Clip A has been trimmed as before, but it can still be
extended using the Trim command. This is because, whenever there is a clip anywhere in the project that
references the same Master Recording, even partially, the Master Recording will not be touched, allowing
the uncommitted clips to be trimmed out to their fullest possible extent.
Notes
1.
Disposing and Committing create blocks of free space that can be used by the project. They cannot, how-
ever, be used by any other project or file, because the blocks are inaccessible little "islands" in the middle of
the project. Packing shoves all the data down towards the beginning of the file so that it occupies a continu-
ous block, and then gives back the empty piece at the end. An illustration of this is provided on page 116.
2.
To regain the maximum possible disk space, highlight the whole project (from Mark zero to Mark 999), then
Dispose, Commit and Pack. The first two operations are virtually instantaneous.
3.
All Space Menu operations are permanent. No UNDO!
4.
When Committing, nothing will happen to the Master Recording that a clip is referencing unless the
selected range contains all clips that reference it.
5.
It is a very good idea to dispose often during recording sessions. Each time a useless recording is made,
UNDO it to remove it from sight, then dispose. The next recording will immediately occupy the freed disk
space.
6.
Committing with Handles set to ALL is a way of removing the parts of the clips that are not heard, but
preserving the Master Recordings entirely. This can be used, for example when a stack of clips have been
placed "on top" of each other, to simplify the edit structure down to one layer effectively, without losing any
recorded audio data.
User Manual
97
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