By using MIDI cables to connect MIDI devices, you can
transfer performance data between different models of
devices made by different manufacturers. For example,
you can use the RADIAS to control an external MIDI
device, or use an external MIDI device to control and
play the RADIAS and its sound generator.
MIDI messages that the RADIAS
transmits and receives
MIDI uses sixteen channels (1–16). When the transmit-
ting device and the receiving device are set to the same
channel, then MIDI messages can be exchanged be-
tween the devices.
• A program uses four timbres, and allows you to set
the MIDI channel independently for each timbre.
The MIDI channel of each timbre is set by the Pro-
gram Edit mode P03–4: TIMBRE – MIDI tab page
If you want to individually play timbres from an
external MIDI sequencer or other device connect-
ed to the RADIAS, set the MIDI channel of each
timbre to the same channel as the tracks of your
external MIDI sequencer.
• The following types of control are transmitted and
received on the MIDI channel of the timbre.
· Control changes assigned to front panel knobs
that control synth parameters.
· Control changes assigned to the insert effect
[EDIT1] and [EDIT2] knobs and the [HI EQ] and
[LO EQ] knobs.
· The control source selected for an insert effect's
• The control change assigned to the [EDIT] knob of
the master effect is transmitted and received on the
global MIDI channel. The global MIDI channel is set
by the Global mode P04: MIDI page "MIDI Ch"
• The control changes assigned to front panel knobs
corresponding to vocoder parameters are transmit-
ted and received on the MIDI channel of the timbre
speciﬁed by the Vocoder Edit mode P06: CARRIER
page "InSrc1" parameter (☞p.104).
• The MIDI channel used when you operate a front
panel synth parameter or an insert effect [EDIT1]
[EDIT2], or [HI EQ] [LOW EQ] knob is determined
by the Program Edit mode P02–1: COMMON –
PROG tab page "Panel Edit" setting and by the tim-
bre that is selected by the front panel TIMBRE
SELECT – buttons.
If "Panel Edit" is set to Link, the MIDI channel of
the timbre selected by the front panel TIMBRE
SELECT – buttons will be used.
If "Panel Edit" is set to Timbre1–Timbre4, the MIDI
channel of the timbre speciﬁed by "Panel Edit" will
• In the Drum Play mode and the Drum Edit mode,
the drum instruments are played on the global
Note-on [9n, kk, vv]
Note-off [8n, kk, vv]
(n: channel, kk: note number, vv: velocity)
When you play the RADIAS' keyboard, note-on or
note-off messages are transmitted. If you're playing the
RADIAS by itself without connecting the keyboard, you
can set the 16KEYS [SELECT] button to KEYBOARD in
Program Play mode, and use the 16KEYS – keys
to transmit note-on/off messages.
The note-off velocity is fixed at 64 for transmission, but
will not be received.
In drum mode if you set the 16KEYS [SELECT]
button to PROGRAM and press the 16KEYS –
 keys, the drum instruments will sound, but
note messages will not be transmitted.
You can also use the envelope follower function
(included in the program parameters) to send
note-on/off data to the internal sound generator
according to an audio signal being input to the
RADIAS. In this case, the note data will be sent on
the MIDI channel of the timbre selected by the
TIMBRE SELECT – buttons.
If the Global mode P01: GLOBAL page "Position" is set
to PostKBD, note-on/off data generated by the arpeg-
giator or step sequencer will be transmitted if the arpeg-
giator or step sequencer is running.
Program change/Bank select
Changing the program/bank
Program change [Cn, pp]
(n: channel, pp: program number selecting one of 128
RADIAS programs A01–H16 and I01–P16 correspond
to program changes [Cn, 00]–[Cn, 7F].
When you switch programs in the Program Play mode,
a program change and bank select messages are trans-
When the RADIAS receives a program change, it will