Roland DR-3 - Manual (Page 93)

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11
Chapter 11 Connecting and Using External MIDI Devices
■ What is MIDI?
MIDI (Musical Instrument Digital Interface) is a
universal standard that allows for the exchange
of performance data and other information
among electronic musical instruments and
computers. Once MIDI cables are used to connect
together devices equipped with MIDI connectors,
each device can send data to, or receive data from
any of the others.
MIDI Connector
The DR-3 is equipped with a MIDI IN connector.
fig.10-01
MIDI IN
Receives data from an external MIDI device.
Connect to the MIDI OUT connector on the
external MIDI device.
With the DR-3, you can use MIDI data to do the
following.
•
Use an external MIDI device to play the DR-3
• Starting/stopping and synchronizing
performances on the DR-3 from a digital
recorder or MIDI sequencer
• Using the DR-3 to record performances
played by external MIDI devices
MIDI Implementation Chart
In order to exchange MIDI data, the data
transmitted by the MIDI devices must be
common to both. The owner’s manuals for a
MIDI device always includes a MIDI
Implementation Chart, which allows you to
quickly check the compatibility of that device
with other devices. By comparing the MIDI
Implementation Charts of each device you are
using, you can confirm which kinds of data can
be exchanged.
* For more details concerning the way MIDI has been
implemented on this unit, please refer to “MIDI
Implementation” (p. 117).
* Some MIDI messages cannot be received while editing is
in progress.
Starting/Stopping and
Synchronizing Performances on
the DR-3 from an External MIDI
Device
You can synchronize the DR-3’s performances
with digital recorders, MIDI sequencers, rhythm
machines, and other such devices.
Master and Slave
When synchronizing two or more devices, one is
made the “master” device and all others “slaves.”
fig.10-02
When the master device is started or stopped, a
MIDI message for that operation is transmitted.
The slave or slaves then start or stop in
accordance with the transmitted MIDI message.
Furthermore, timing clock data corresponding to
the tempo is transmitted by the master device.
Slave devices synchronize their performances to
this timing clock.
Other data transmitted from the master device to
slave devices includes song numbers (Song
Select) and the position of song performances
(Song Position Pointer).
MIDI IN
Connector
MIDI OUT
Master
MIDI IN
Slave (DR-3)