User guide

Chapter 31 Beat Mapping Regions 687
On occasion, your recordings may contain (MIDI note) events that fall onto musically
useful positions, and should remain there when beat mapping is used for audio
recordings. Such situations are catered for by the inclusion of the Protect MIDI option,
found in the track header of the Beat Mapping track. Simply activate this option to
keep existing MIDI events at their current positions when beat mapping.
Beats From Region
The Beats from Region button in the Beat Mapping track header activates an automatic
Beat Mapping method that uses a self-recorded metronome region.
To use the automatic Beat Mapping feature:
1 Create, or use an existing instrument track.
2 Insert the KlopfGeist instrument (or perhaps the EXS24 mkII with an appropriate sound,
such as a closed hi-hat or cross-stick).
3 Record a one note per beat metronome click that fits the music in the existing regions.
If some of the metronome region notes are not in time with the original recording, you
can edit their positions in any of the MIDI editors—in order to get them in sync with
the music.
4 Select the metronome region, and click the Beats from Region button.
5 Choose the most appropriate note value in the Set Beats by Guide Region(s) dialog
(default: 1/4 Note), and click OK to perform the beat mapping operation.
Logic Express will map all beats to the notes in this region, and insert tempo changes
to preserve the original timing, starting with the first beat in bar one. Although the
audible result doesn’t change, the music will be displayed correctly—with regard to bar
positions.