36
5
Midi
applications
MIDI (Musical
Instrument
Digital Interface) is a
world-wide
standard
that
allows electronic musical
instruments
and
computers to exchange musical data.
5.1
MIDI
channels
MIDI channels are similar to television channels
in
that
when
the channel of a receiving device is set to
match the channel of a transmitting device, the
data
of
that
channel will
be
received.
The Prophecy
sends
and
receives data on its specified Global MIDI channel. The Global MIDI channel
setting is
made
in
Edit
mode
Global section
page
GLB-8 [MIDI] Global Channel.
5.2
Note
On/Off
When
you
play a note, a Note
On
message [9n,kk,vv] is transmitted which tells which note
was
pressed
(the
Note
Number),
how
strongly
it
was
pressed
(the
Velocity).
(n:channel,
kk:note
number,
vv:velocity) When
you
release the note, a Note Off message [8n,kk,vv] is transmitted.
The
Prophecy
transmits
Note
On/Off
messages
on
the
Global
MIDI
channel
when
you
play
its
keyboard. However,
if
the Prophecy
is
set to Omni ON, it will receive
and
produce
sound
in response to
incoming
Note
On/Off
messages
of
any
channel,
regardless
of
its
Global
MIDI
channel
setting.
Normally
you
will leave Omni OFF (Global
mode
GLB-8 Omni), so that Note
On/Off
messages will
be
received only on the Global MIDI channel.
5.3
Selecting programs
Programs
can
be
selected
by
Program
Change
messages
[Cn,pp] (pp:
program
number,
up
to 128
sounds
can
be
selected). You
can
select
programs
of
other
banks
by
using
Bank
Selecf
1
messages
[Bn,OO,mn]
(control change
#.00)
and
[Bn,20,bb] (control change
#.32).
(mm:
upper
byte
of
bank
number,
bb: lower byte of
bank
number, together they allow
you
to select from 16384 banks.)
An
incoming Bank
Select message will change the
program
bank
from which subsequent
program
changes will be taken;
i.e., the
bank
will
not
achtally change until
the
next
program
change message is received.
Normally the Prophecy will receive
program
change messages
on
its Global MIDI channel to change
programs.
Program change
messages are transmitted
and
received only
when
in Performance mode.
Transmission
and
reception of
program
change messages can
be
turned
on/
off
in
Edit
mode
Global
section
page
GLB-12 [MIDI
Program
Change]. You can also specify the correspondence
between
the
Prophecy's internal
programs
(AOO-C63)
and
the
program
number
I
program
bank
of external MIDI
devices. (Edit
mode
Global section page GLB-13 [Program Bank Select Map]
and
page
GLB-14 [Program
No.
Select Map].
*
1
When
only
Program
Chunge
messages
are
used
to
select
sounds
via
MIDI, only
128
different sounds
can
be
selected.
If
you
need
to
select
more
than
128
sounds,
use
Bank
Select
messages.
Control
Change
0
specifies
the
upper
byte
of
the
bank
number,
and
Control
Change
32
specifies
the
lower
byte.
This
provides
a
total
of
16384
program
banks.
When
a
bank
select
message
is
received,
the
next-received
Program
Select
message
will
select
a
program
from
the
newly
specified
bank.
When
selecting
sounds
from a MIDI sequencer,
send
Control
Change
0 as the
MSB,
Control Change 32
as the
LSB,
and
then a Program Change message. The result of receiving these messages will
depend
on
the settings of Global
sedion
page
GLB-13
[Program Bank Select Map]
and
GLB-14 [Program No. Select
Map].
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