Reference Manual
CHAPTER 16. INSTRUMENT AND EFFECT RACKS 211
16.4.1 Auto Select
When the Auto Select switch is activated, every chain that is currently processing signals
becomes selected in the Chain List. This feature works in conjunction with zones, which are
discussed next, and is quite helpful when troubleshooting complex Racks.
16.5 Zones
Zones are sets of data lters that reside at the input of every chain in a Rack. Together, they
determine the range of values that can pass through to the device chain. By default, zones
behave transparently, never requiring your attention. They can be recongured, however,
to form sophisticated control setups. The three types of zones, whose editors are toggled
with the buttons above the Chain List, are Key, Velocity, and Chain Select. The adjacent
Hide button whisks them out of sight.
Note: Audio Effect Racks do not have key or velocity zones, since these two zone types
lter MIDI data only.
Zones contain a lower, main section, used for resizing and moving the zone itself, and
a narrow upper section that denes fade ranges. Resizing of either section is done by
clicking and dragging on its right or left edges, while moving is accomplished by clicking
and dragging a zone from anywhere except its edges.
16.5.1 Signal Flow through Zones
To understand how zones work, let's examine the signal ow in a MIDI Effect Rack. Our
MIDI Effect Rack resides in the device chain of a MIDI track, and therefore processes MIDI
signals. We will assume that it contains four parallel device chains, each containing one
MIDI effect.
1. All MIDI data in the track is passed to its device chain, and therefore into the
input of the MIDI Effect Rack.
2. Our MIDI Effect Rack has four device chains, all of which receive the same MIDI
data at the same time.