Apple Logic Express 9 - Manual (Page 1148)

To avoid having to do this by trial and error
1 Open the Tempo List (see Using the Tempo List ).
2 Create a tempo event at the desired bar position.
3 Set a time position for this tempo event in the SMPTE Position column.
The preceding tempo event is automatically adjusted, to generate the correct bar and
time position for the inserted tempo event.
4 If you want to keep the same tempo for the following passage, delete the tempo event
you inserted.
MIDI Machine Control
MMC is a set of MIDI commands that Logic Express uses to control the transport functions
of any MMC-capable tape machine. The recording process can also be controlled and
automated from Logic Express via MMC. This tape machine then provides the SMPTE
signal that Logic Express uses as a synchronization source (with Logic Express as the
slave).
You can control connected devices from Logic Express by using the normal transport
functions (including direct positioning and cycle jumps). Don’t forget that Logic Express
needs to wait for the connected device to finish rewinding or forwarding. If MIDI Machine
Control is enabled, dragging the playhead will send MMC Locate commands continuously,
until the mouse button is released.
To turn on MMC
Do one of the following:
µ
Control-click the Transport bar Sync button and choose the MIDI Machine Control (MMC)
setting in the shortcut menu.
µ
Choose File > Project Settings > Synchronization, and choose the Transmit MMC option
in the MIDI tab.
Logic Express supports up to 64 MMC tracks, allowing devices such as the Alesis ADAT
to be operated via MIDI machine control.
1148 Chapter 39 Synchronizing Logic Express