Apple Logic Pro 8 - Manual (Page 868)

868 Chapter 39 Working in the Environment
The MIDI Signal Path
Before any MIDI events received at your computer’s MIDI inputs can be recorded by
Logic Pro, there must be a connection between two Environment objects, namely the:
 Physical Input object: This represents the MIDI In port(s) of your MIDI interface.
 Sequencer Input object: This represents the door in to Logic Pro for incoming MIDI
events.
In Logic Pro, incoming MIDI events (which arrive at the Sequencer Input object) are
always directed to the selected track in the Arrange area’s track list, where they can be
recorded in MIDI regions.
The events played by the track region are mixed with incoming events (if any), and sent
to the Environment object that the track is routed to.
From here (the multi instrument object), the events are directed to a MIDI output (see
“
Creating Direct Output Assignments ” on page 869).
You can insert objects into the signal path between the Physical Input and the
Sequencer Input object if you wish (a MIDI monitor object, for example, which allows
you to see incoming MIDI events).
You can also insert objects between the Arrange track, and its destination object,
enabling other Environment processing. The Arrange track itself is not represented by
an Environment object, but you can use the Track Assignment menu to route the
track’s output to an Environement object.