Apple Logic Express 7.2 User Manual
Page 43

Chapter 1
Control Surface Setup
43
Mode
Defines
the
way
the
incoming
value
modifies
the
current
parameter
value.
You
can
choose
between
the
following
parameters:
Â
Direct—The incoming value is the new parameter value.
Â
Toggle—If
the
parameter’s
current
value
is
0,
it
is
set
to
the
incoming
value.
Otherwise
it
is
set
to
0.
This
option
is
useful
for
buttons
which
toggle
a
value:
Mute,
Solo,
and
so
on.
Â
Scale—The
incoming
value
is
scaled
from
its
value
range
to
the
destination
parameter’s
value
range.
Most
useful
for
faders
and
rotary
pots.
Â
Relative—The
incoming
value
is
added
to
the
parameter’s
current
value.
Used
by
encoders,
but
also
for
buttons
that
increment/decrement
by
a
certain
amount
(set
by
the
Multiply
parameter).
Â
Rotate—The
incoming
value
is
added
to
the
parameter’s
current
value,
cycling
between
maximum
and
minimum
values.
This
is
useful
for
button
presses
that
cycle
between
modes:
automation
mode,
for
example.
Â
X-OR—The
value
defines
a
bit
mask
which
is
applied
to
the
parameter’s
current
value
with
the
“exclusive
or”
Boolean
operation.
Useful
for
enabling/disabling
single
Object
types
in
Global
View.
Feedback
Defines
the
way
the
parameter’s
current
value
is
displayed
on
the
control
surface.
You
can
choose
between
the
following
options:
Â
None—No feedback is sent.
Â
Single Dot/Line—LED rings: only one LED; LCDs: a single vertical line.
Â
Left to Right Bar—A bar from the minimum to the current value.
Â
Right to Left Bar—A bar from the current value to the maximum.
Â
Q/Spread—A bar from the center to the current value.
Â
Ascending Bar LCDs—A bar from the bottom to the current value.
Â
Descending Bar LCDs—A bar from the top to the current value.
Â
Text Only—LED rings: no feedback; LCDs: no feedback as a graphic element.
Â
Automatic—Dependent
on
the
currently
assigned
parameter,
the
most
suitable
feedback
mode
is
used:
Plug-in
and
Instrument
parameters
carry
this
information,
Pan
uses
Single
Dot/Line,
all
other
parameters
use
Left
to
Right
Bar.
Note:
Feedback
only
works
for
supported
control
surfaces,
and
not
all
settings
are
available
for
all
controls.
Text Feedback Checkbox
If
enabled,
a
textual
representation
of
the
current
value
is
sent
to
the
control
surface’s
display.
The
plug-in
determines
the
display
position
and
number
of
characters
that
are
used.