Apple Logic Pro 8 - Manual (Page 443)

Chapter 18 Editing MIDI Events in the Event List 443
Copying and Moving Events
You can perform advanced copy and move operations within the Event List. These
allow you to directly swap events, or to merge a group of notes from one section of a
region to the same, or another, region, as examples. For more information, see
“
Advanced Note Copy and Move Options ” on page 410.
Protecting the Position of Events
There are situations where you will want to protect certain events from being moved.
As an example, several note events may be used to trigger footstep samples that match
an actor walking down a corridor, in a video soundtrack.
You have already created the music for this scene, but have been asked to increase the
tempo to match several cuts of different camera angles in the corridor. Obviously, a
change in the project tempo will move the events, resulting in out of sync footsteps.
Thankfully, Logic Pro has a feature that preserves the absolute time position of events.
To protect the position of one or more selected events:
m Choose Functions > Lock SMPTE Position (or use the corresponding key command).
This ensures that events that fall at a particular absolute time position: 1 hour, 3
minutes, 15 seconds, 12 frames, for example, will remain at this position when tempo
changes are made.
To unprotect the position of one or more events:
m Choose Functions > Unlock SMPTE Position (or use the corresponding key command).
Editing Events
The list area features several columns: Position, Status, Ch(annel), Num(ber), Val(ue),
and Length/Info: These columns display all details of all event types. In most cases, you
can directly edit the data displayed (with the exception of the Status column, which
merely indicates the event type).
Not all columns are used for every type of event. As examples, system exclusive
messages are not MIDI channel specific, so the Ch(annel) column is unused. Channel
and polyphonic pressure messages have no length, so the Length/Info column is left
blank.