Transmitting In Mono Mode Or Poly Mode; Changing Patch And Other Parameters By Transmitting Midi Messages From The - Roland GR-30 Manual

<When Using the Volume Knob and Selector Switch on the GK-2A>
When the volume on the GK-2A is adjusted, the
change is sent by MIDI Control Change message No.
7 from MIDI OUT on the GR-30. (The receiving
instrument should be set to recognize Control Change
message No. 7.)
This makes it possible to control the volume level on
the external device with the volume knob on the GK-
2A. Also, when the selector switch on the GK-2A has
been set to "GUITAR," a value of zero is sent to the
external sound generator on the Control Change mes-
sage No. 7, and sound from the external sound genera-
tor also stops. When "MIX" or "SYNTH" is selected,
values corresponding to the state of the GK-2A volume
or the EV-5 are sent, and sound production is restarted.
Sending of Control Change message No. 7 can be
stopped when necessary (p. 83).
Transmitting in Mono Mode
or Poly Mode
Transmission in Mono or Poly mode, one or the other
of which was selected at the same time as the channel
in the preceding steps, differs as follows.
Transmitting in Mono Mode
Number of channels used: One channel per string is
used. The number selected when specifying the chan-
nel in the Edit mode is taken as the start for automati-
cally selecting six consecutive channels.
(For example, when "3ch" is selected, the six channels
from channel 3 to channel 8 are sequentially used for
strings 1 through 6. This means that no channel from
12 to 16 can be selected as the starting channel when
transmitting in Mono mode.
Features:
Information on continuous pitch changes (MIDI Bend
messages) can be sent independently for each string.
This makes it possible to reproduce unique guitar
techniques such as tremolo bar usage and harmo-
nized bending.
Suitable usage conditions:
Mainly when using a multitimbral sound generator
offering six or more parts
Transmitting in Poly Mode
Number of channels used: A single common channel
for all strings is used. The sending channel set in the
Edit mode is used as-is.
72
Features:
Only a single channel is used for all guitar parts, so
the number of MIDI channels used can be reduced.
This enables control even for sound generators which
cannot receive simultaneously on six channels.
However, it should be noted that when two or more
strings are playing, Bend messages are not sent and
the pitch changes at semitone intervals. This means
that the pitch actually being played on the guitar can-
not be reflected perfectly in the synth sound.
Suitable usage conditions:
When using an external sound generator with five or
fewer parts, or when the number of MIDI channels
(sound generator parts) must be reduced
Changing Patch and Other
Parameters by Transmitting
MIDI Messages from the GR-30
(PG CHNG#)
When the pedals or the [+] and [-] buttons are used to
change patches on the GR-30, a Program Change
(tone change) message is sent to the external device
from MIDI OUT. This can be used to change tones on
the external sound generator or to change patches for
guitar-sound effects.
The number of the Program Change message that is
sent can be freely changed and saved to the patches
on the GR-30. (At the time of purchase, Program
Change numbers 1 through 128 are assigned sequen-
tially to patches A11 through d84.)
<Changing the Program Change Number Sent to
the External Device During Patch Selection>
1. Choose the patch to be changed and press
[EDIT/PLAY] to enter the Edit mode.
2. Set the EDIT TARGET dial to "MIDI" and the
PARAMETER SELECT dial to "A" (PG CHNG#).
3. Set the STRING SELECT knob to "ALL."
4. Use [+] and [-] to change the displayed Program
Change number (within the range of 1 to 128).
5. After making the setting, turn the PARAMETER
SELECT dial to "WRITE PATCH?", and press [+]
and [-] simultaneously to write the patch.
If there is a patch which should be played using only
the built-in sound generator, then in step 4 above,
hold down [-] and select "oFF" (off). This stops the
transmission of performance information (including
information other than Program Change messages)
for the patch from the GR-30.
Conversely, if there is a patch which should be played
using only the external sound generator, just set the
GR-30 patch "LAYER" setting (p. 34) to "_" (mute).