Roland DR-3 用户手册

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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.
*
*
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)