Logic Pro 9 User Manual - Help Library - Apple

Assigning Tracks to Environment Objects
Strictly speaking, tracks don’t need to be routed to an instrument or audio channel strip,
as you can assign any Environment object as the track destination. The track data could
conceivably be sent to a fader object, or directly to a MIDI port, for example.
Environment objects are software representations of individual data-processing elements.
Some examples of Environment objects include arpeggiators, knobs, faders, chord
memorizers, and channel splitters. These individual objects can be connected with each
other, using virtual cables. The end result of cabling multiple objects is real-time processing
and manipulation of MIDI (and some audio) data. This can be as simple as a fader to
control the volume of a connected MIDI synthesizer, or as complex as a rhythm generator
or step sequencer (which exists as a virtual machine within the Environment). This machine
can be called into service whenever you need it. For more information, see Working in
the Environment.
Obviously, audio signals would not be understood by a MIDI sound module, so there is
no point in routing a track that contains audio regions to an instrument channel strip, or
vice versa.
Assigning Tracks to Special Destinations
In addition to the normal channel strips, there are two other possible track output
destinations:
• No Output: Tracks assigned as No Output send no data. This can be useful in situations
in which you want to store data (such as SysEx) that you don’t want to send from
Logic Pro.
• Folder: This setting is used when you want the track to play a folder region. (See Working
with Folders.) Normal regions will not play on a track set up for folder playback.
Zooming Tracks in the Arrange Area
Tracks in the Arrange area can be zoomed individually in conjunction with, or independent
of, the global zoom controls (and Waveform Zoom slider) for the window. There is a
default zoom setting for tracks, which is automatically chosen when a window is first
opened. This setting is a good compromise between visibility of text and regions, and
working space in the Arrange area.
To zoom in or out on a track
1 Move the pointer to the bottom-left corner of a track.
240 Chapter 9 Working with Tracks