Roland GT-PRO Manuel du propriétaire Page 72

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72
Chapter 7
Using the GT-PRO with External MIDI Devices Connected
What Can You Do with MIDI?
You can perform the following operations using MIDI with
the GT-PRO.
* The use of MIDI requires that the MIDI channels of the
connected devices match. If the MIDI channel settings are not
correct, the GT-PRO will be unable to exchange data with
other MIDI devices.
When connecting an FC-200, refer to “Chapter 8 Using
the GT-PRO Connected to the FC-200” (p. 81).
Operating From the GT-PRO
Outputting Program Change Messages
When a patch is selected on the GT-PRO, a Program Change
message corresponding to the patch number is transmitted
simultaneously. The external MIDI device then switches its
settings according to the Program Change message it
receives.
fig.07-0010
Outputting Control Change Messages
Data describing the actions of the external devices (EXP
pedal, foot switch, etc.) connected to the GT-PRO are output
as Control Change messages. Such messages can be used to
(among other things) manipulate the parameters of an
external MIDI device.
Transmitting Data
You can use Exclusive messages to transmit the settings for
effect sounds and other content stored in the GT-PRO to
other MIDI devices. For example, you can provide another
GT-PRO with the same settings, and save effect sound
settings to a sequencer or other device.
Remotely Controlling the GT-PRO
Using an External MIDI Device
Switching Patch Numbers
When the GT-PRO receive Program Change messages from
the external MIDI device, its patches are simultaneously
switched.
You can set up the correspondence between MIDI Program
Change messages and the GT-PRO’s patches using the
Program Change Map (p. 77). You may need to work on
these correspondences when you want to line up some
effects in combination with other MIDI devices.
The connections shown in the figure below are for a
sequencer automatically performing the backing as a guitar
is being played. The patches are switched automatically
when the program numbers corresponding to the patches are
input along with the performance data at the points where
you have determined the GT-PRO patches are to be
switched.
fig.07-0020
Receiving Control Change Messages
You can control specified parameters during a performance
by having the GT-PRO receive Control Change messages.
Parameters to be controlled are set with Assign (p. 66).
Receiving Data
The GT-PRO can receive data transmitted from another GT-
PRO, as well as data that’s been stored on a sequencer.
MIDI OUT
MIDI IN
MIDI IN
MIDI OUT
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