Roland JV-30 - System Messages

OAftertouch
Messages
Using MIDI 2
These messages convey the amount of
pressure that is further
put
on
a key
after it has initially
been pressed.
There are two
types
of Aftertouch; Channel and Polyphonic. Channel After-
touch provides
control
based
on each MIDI channel, whereas Polyphonic Aftertouch manages
the
information on an individual key basis. Although the JV-30 cannot transmit
Aftertouch
messages, it is capable of
responding
to
both
types
of Aftertouch messages v^/hen received
from an
external device.
Reception of channel aftertouch and
polyphonic aftertouch on the JV-30 is disabled in the
default factory setting or when
receiving
a GS
reset message. When you wish to use
these
functions,
set
them
by
transmitting
exclusive message from external MIDI device. See the
MIDI
implementation
chart for more details.
O
Program Change
Messages
These messages convey information about
changes in the
sound
used.
O
Control Change
Messages
These messages are used to
enhance the expressiveness of a
performance, and include Vibrato,
Hold, Volume,
and Pan. On the JV-30, a value
of
"0"
for the Control Number is employed to
change
Variations.
System Messages
System Messages
include Exclusive messages; data
concerned with synchronized
play,
as
well
as
diagnostic-use data. On the JV-30 it is
mainly Exclusive messages that
are recognized.
O
Exclusive Messages
Exclusive messages
handle information
such
as
that related to a device's own
unique sounds.
Generally,
such messages can be
exchanged only between devices of
the same model
(by
the
same
manufacturer).
On the
JV-30 they are
mainly useful for storing Tone and
system function data, and the settings
for Parts into a
sequencer.
*
Whenever
Exclusive messages are to be
used for
communication, both devices need
to be
set to the same Unit
Number
(» p.35).
Concerning
MIDI
Implementation Charts
MIDI Device B
MIDI Device A
rniumil teeognii Ettmtrki
MIDI makes it possible for a
wide range of musical data to be
communicated, but
there
are
many differences between
devices. For this reason
every owner's manual includes
a
MIDI
Implementation Chart,
which
you
should look at to
determine the
types
of MIDI
messages it is capable of
handling. Wherever a
"O"
appears, the
unit is capable of
handling that type
of
data.
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