Apple Logic Pro 9 - Manual (Page 1057)

You determine the MIDI signal flow by connecting Environment objects with virtual
cables. For full details, see
Creating Your MIDI Signal Path .
The connection of objects with virtual cables makes it easy to follow the signal flow, but
also allows near limitless routing and MIDI data processing possibilities. Use your
imagination, and logically plan (and implement) the signal path, to take advantage of
the functionality offered by each object type. If you can think of a way to manipulate
your MIDI data, you can do it in the Environment.
Most objects can be remotely controlled by other MIDI events (using the sliders or
modulation wheel of your keyboard, for example). You can even record these movements,
if you wish.
In addition, there are specialized objects that can split a MIDI signal into different channels,
make preprogrammed alterations, or even reroute the signal path. These allow you to
use the same MIDI data (note events, for example) for several processes, or can be used
to provide controller keyboard functionality to the most basic MIDI keyboard.
As you might imagine, the Environment can quickly fill up with a large number of objects.
To keep things organized, you can assign them to different display levels, referred to as
layers. Think of these layers as being different, partial views of the overall Environment.
Naturally, you can easily connect objects between different layers.
Working with Layers
Layers are display levels of the Environment window. They allow you to view and work
with specific groups of related objects (all instrument objects, for example), rather than
dealing with all Environment objects at the same time. The name of the current layer is
displayed in the Layer menu.
Layer menu
The distribution of objects across different layers has no effect on their functionality—it’s
simply a better way to organize (potentially thousands of ) objects. There are two
exceptions:
• Objects in the Global Objects layer also appear on all other layers.
• The All Objects layer shows a list of all Environment objects.
1057 Chapter 36 Working in the Environment