Yamaha DX9 Operating Manual page 22

MIDI
MIDI
(Musical
Instrument
Digital Interface)
The MIDI
terminal
is
for external control of electronic
musical instruments.
Any
instrument equipped with
a
MIDI
terminal
can be connected
using the
MIDI
cable
and
used
for transmitting data to the instrument.
MIDI can be used
for the following types of data
trans-
mission
and
control;
•
Real-Time Control
This
is
used for controlling
more
than
one
electronic
musical
instrument
at
once
using a
sequencer
to
form
a
musical
ensemble.
It
can also be used to control a
second
electronic musical instrument
via
the l<eybGard of the
main
instrument.
1.
Key
pitch
ON/ OFF,
etc.
2.
Pitch
bend, modulation
wheel, sustain switch,
etc.
3.
Voice number.
•
Connecting
the
MIDI
cable
• System
Information
Certain types of data can be
transferred between
certain
groups
of instruments of the
same
manufacturor.
The
following types of data can
be exchanged
using the
YAMAHA
DX9
and/or
DX7.
1
Data
for
one
voice or for
ail
voices.
2.
The
data
for a single
parameter within
a certain voice.
3.
The
data
for a single
parameter within the
FUNCTIONS.
^
Fig.
1
1
1
'
'
'
IN
OUT
CONPUTER/
SQUENCER
IN
OUT THRU
SYNTH A
CH
1
IN
THRU
SYNTH
B
CH2
IN
AUTO RHYTHM
CH3
As
can be
seen
in figure
1,
the data
output from
the
se-
quencer
is
transmitted
via a single
MIDI
cable and
input
to synthesizer A,
where
it is
sent to the next instrument
to
be
controlled
via
the
THRU
terminal.
In this case,
the
sequencer
is
outputting multi-channel
data. Therefore, the
desired channel
number
on
the receiving
side
must be
selected accordingly.
Both the sending
side
and the
receiv-
ing
channel
numbers
will
have
to
be
specified
with the
system
shown
in
figure
2.
i
'
Fig.
2
IN
OUT
SYNTH
A
IN
OUT
SYNTH
B
^^,
•
Selecting the Receiving Channel
While the
unit
is
in
the
FUNCTION
mode,
pressing
fe
]
will
produce
the display
shown
in
the
figure.
The
selec-
tion of the
MIDI
receiving
channel number
can be
carried
out using the
DATA ENTRY
controls. Select system
information
YES/NO
for both the receiver
and
the
trans-
mitter. Pressing
\e ]
again
will
produce the
display
"SYS
IN
FO
UNAVAI
L". Press rON]
to change
this to
"AVAI L",
and
the Instrument
will
enter the
system information
trans-
mit/receive
mode.
FUNCTION
pressing
FUNCTION CONTROL
MIDI CH=
1
DATA
ENTRY
press
Channel
number
can be
carried
out
using the
Data Entry
controls.
NO YES
-1 +
1
<2I>