Roland Sound Canvas Digital SC-D70 Owner's Manual page 52

Appendix
Soft (controller number 67)
This message conveys movements of the soft pedal, which gives the sound a more
muted tone while the pedal is pressed.
When Soft On is received, the cutoff frequency will be lowered, producing a more
muted tone. When Soft Off is received, the cutoff frequency will return to its
previous value.
Reverb Send Level (controller number 91)
This message applies a reverb effect to the part.
Chorus Send Level (controller number 93)
This message applies a chorus effect to the part.
Delay Send Level (controller number 94)
This message applies a delay effect to the part.
Portamento (controller number 65)
Portamento Time (controller number 5)
Portamento Control (controller number 84)
Portamento is an effect that smoothly changes the pitch from the previously pressed
note to the next-pressed note.
When a Portamento message is received, the portamento effect will be switched on/
off. The Portamento Time message specifies the speed of the pitch change.
Portamento Control can be received to specify the source note number (the
previously pressed note).
RPN LSB, MSB (controller numbers 100/101)
Data Entry (controller numbers 6/38)
RPN (Registered Parameter Numbers) are messages whose function is defined by
the MIDI specification, and can be used even for differing models. Use RPN MSB
and RPN LSB to specify the parameter that you wish to modify, and then use Data
Entry to specify the value of the parameter. RPN messages can be used to set Pitch
Bend Sensitivity, Master Coarse Tune, and Master Fine Tune values.
NRPN LSB, MSB (controller numbers 98/99)
Data Entry (controller numbers 6/38)
By using NRPN (Non-registered Parameter Number) messages, you can modify
sound parameters that are unique to a given device. Use NRPN MSB and NRPN LSB
to specify the parameter that you wish to modify, and then use Data Entry to specify
the parameter value.
The GS format defines various NRPN messages, which allow you to use GS format
compatible application software to modify sound parameters. NRPN messages can
be used to set Vibrato, Cutoff Frequency, Resonance, and Envelope values.
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When you apply
portamento by pressing a
note below the currently
pressed note, the range of
the effect may be limited
(approximately two
octaves).
The values you modify
using RPN will not be
initialized even if the sound
is switched by a Program
Change.
The values you modify
using NRPN will not be
initialized even if the sound
is switched by a Program
Change.
When the SC-D70 receives
a GS Reset, it will be able to
recognize NRPN messages.
For details on using NRPN
messages with a GS sound
generator, refer to Using
NRPN messages with a
GS sound generator (p.
56).