Transmission/Reception Of Data Using Midi (Data Transfer); Mapping The Correspondence Between Patches And Program Change Numbers (Map Edit); The Exchange Of Midi Data - Roland GP-16 Owner's Manual

3. Transmission/Reception of data using
MIDI (Data transfer)
By employing Roland MIDI System Exclusive meso
sages, the GP·16's patch data can be transierred to
another GP·16 or to another device such as a MIDI
sequencer, where
rt
can be stored.
For information on liansmission, see "5 Transmission oj
data~ (~
PAB).
For inlormation on recepuon, seE "6, Data receplion and
verifica1ion~
(IS·
P.5D).
4. Mapping the correspondence between
patches and Program Change
Numbers (Map edit)
Settings can be made which determine the correspon·
dence belween Program Change Numbers and Patches
that will penain when the GP·16's Palches are changed
using an exlernal MIDI device. Conversely, setlings can
also be made to determine the correspondence between
Patches and Program Change Numbers which will be
used to select among Presets on an external MIDI
device, uSing the GP'16
For details. refer to "7. MIDI Mapping (Program Change-
PatCh)" (19" P.52) and "8. MIDI Mapping (PatCh - Program
Changer
(S'
P.52).
~
Concerning MIDI
WHA
T IS MIDI?
MIDI stands for the "Musical Inslnumenf Digital Inler·
face". It is an iniernational standard that allows for a
variety of data 10 be exchanged between differenf Inslnu·
menls. Such data includes information such as that ot
Ihe music penormed, and about changes In sound.
As long Ihey are MIDI compatible, all devices, regardless
of differences m model or manufaclurer, can exchange
whaleverpertormance data they are equipped to under·
stand.
With MIDI, a pertormance on a keyboard, or operations
involving controls, are handled as MIDI data.
When an instnument IS played, a stream of MIDI meso
sages is generated that corresponds 10 the events
happening dUring play. A MIDI device receiving these
messages can then produce sound as n it were being
played directly.
1. The Exchange of MIDI Data
The exchange of MIDI data is carried oul as explained in
Ihe following.
About MIDI Connectors
In carrymg out fhe exchange of MIDI data.lhe 3 types 01
connectors shown below are used. MIDI cables are
connected to these connectors in various ways depend-
ing on the method they are to be used.
MIDI IN : Receives data trom another MIDI device.
MIDI OUT : Transmits data originaling in the unil.
MIDI THRU: Sends out an exact ccpy of the data received
at MIDI IN.
In theory, any number of MIDI devices could be connected
together using MIDI THRU connectors, bUl h is best to
consider 4. to 5 devices as being the practical iimit, This is
because the further down the line a device is located, the
more deJaythere is that could occur, and the chance oj error
due to deterioration in Signal quality increases.
MIDI Channels
Wilh MIDI, a single cable can be used lor carrying
differing sets of periormance inlormation, for a number
of MIDI devices. This is possible thanks to the concept of
a MIDI channel.
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