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53
Using the RD-300GX As a Master Keyboard
By connecting an external MIDI device to the MIDI OUT connector on the RD-300GX’s
rear panel, you can then control the external MIDI device with the RD-300GX.
Normally, the RD-300GX will transmit note messages from the MIDI OUT connector, but
if you press the [EXTERNAL/INTERNAL] button so the “EXTERNAL” indicator is lit, you’ll
be able to control various settings on your external MIDI device in addition to transmitting
note messages.
You can control internal and external sound generators independently.
If you press the [EXTERNAL/INTERNAL] button so the “EXTERNAL” indicator is lit, the RD-
300GX will be in a state where it can control an external MIDI sound module (External
Zone). You use the [EXTERNAL/INTERNAL] button to switch between control of the
Internal Zone and control of the External Zone. You can also make detailed settings for
MIDI messages transmitted to external sound modules.
MIDI (Musical Instrument Digital Interface) is a standard specification that allows musical
data to be exchanged between electronic musical instruments and computers. By using
a MIDI cable to connect devices that have MIDI connectors, you can create an ensemble
in which a single MIDI keyboard can play multiple instruments, or change settings
automatically as the song progresses.
The RD-300GX has the following three types of MIDI connector. Their functions differ as
described below.
fig.Q3-01
MIDI IN Connector
Performance messages from an external MIDI device are received here. These incoming
messages may instruct the RD-300GX to play sounds or switch Tones.
MIDI OUT Connector
MIDI messages are transmitted from this connector to an external MIDI device. The RD-
300GX’s MIDI OUT connector is used for sending the performance data of the controller
section as well as data used for saving various settings (Bulk Dump
→
p. 77).
USB MIDI Connector
Use a commercially available USB cable to connect this to your computer’s USB connector.
You can use MIDI-compatible software on your computer to transmit SMF files for
playback by the RD-300GX, or set up a sophisticated music production system in which
MIDI data is transferred between your sequencer software and the RD-300GX.
What’s MIDI?
About MIDI Connectors
RD-300GX_e.book 53 ページ ２００８年２月１４日 木曜日 午後１時２６分