Expression Pedal; The Internal Pedal And Wave Pedal; Input Level; External Control - Boss GT-10 Workshop Manual

Expression Pedal

In most cases, you'll use the onboard expression pedal to
control the GT-10's PEDAL FX group. Effects in this group
include foot volume, pedal bend, and wah.
The pedal can also be used to continuously vary other effect
parameters, such as the timing or level of a delay effect, the
speed of a modulation effect, or the amount of overdrive—
nearly anything you can imagine.
As with the foot switches, you can also use the pedal to turn effects on/off,
toggle between parameter values, and more.
When assigning parameters to the onboard expression pedal, it's
referred to as "EXP1" in the GT-10's display.

The Internal Pedal and Wave Pedal

These pedals are "virtual" pedals that live inside the GT-10. They control
parameters assigned to them automatically.
The internal pedal functions like an automatic expression pedal, moving a
parameter from one value to another over a predetermined period of time.
To initiate an internal pedal assignment, you trigger it manually with another
realtime controller, like a foot switch. Alternately, you can trigger the internal
pedal at the moment a patch is selected.
Triggering the internal pedal with a foot switch like CTL 1 (or another controller)
adjusts an assigned parameter from one value to another over a predetermined time.
The wave pedal continuously varies—or "modulates"—a parameter between
two assigned values. The speed of the value change can be set manually or
synced to the GT-10's master tempo.
The wave pedal continuously adjusts a parameter between two assigned values.

Input Level

For the ultimate in expression, the GT-10 allows you to control parameters
simply with the dynamics of your playing. When you play soft, hard, and
anything in-between, the GT-10 senses these dynamic changes as changes
in input level. Thus, by assigning a parameter to be controlled via input level,
you can adjust it with how hard or soft you play.
With the input level assignment, you can continuously adjust
a parameter with your playing dynamics.

External Control

EXP PEDAL 2/CTL 3,4
On the GT-10's rear panel, there's a jack labeled EXP PEDAL 2/CTL
3,4. Here, you can connect either an optional expression pedal
or up to two optional foot switches. When connected, these
devices can be used to supplement the onboard expression
pedal and foot switches.
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