Roland S-1 Owner's Manual page 56

Other useful functions
OFF: No parameters are changed.
roLL
(Roll)
Nod (Modulation): A cyclical change is applied to the pitch or filter according to how the unit is tilted, just like when
MIDI modulation data is received. (The effect is the same for both positive and negative directions.) Adjust the
effect speed with the
FrEq (Frequency): Raises or lowers the cutoff point centered on the current value of the [FREQ] knob, according to
the tilt of this unit.
rESo (Resonance): Emphasizes or dampens the frequencies around the cutoff point according to the tilt of this
unit, centered on the current value of the [RESO] knob.
P. b nd (Pitch Bend): Tilting this unit applies pitch bend changes to the pitch or to the filter according to how this
unit is tilted, just like when MIDI pitch bend data is received. Use
Ptch
to adjust the effect depth.
(Pitch)
PAn (Pan): Changes the left-right stereo position of the sound according to how this unit is tilted, just like when
MIDI pan data is received.
EXP (Expression): Changes the volume according to how this unit is tilted (only in the negative direction), just like
when MIDI expression data is received.
d. L Ev (Delay Level): Changes the delay volume according to how this unit is tilted, centered on the current value of
the DELAY knob.
r. L Ev (Reverb Level): Changes the reverb volume according to how this unit is tilted, centered on the current value
of the REVERB knob.
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LFO [RATE] knob(P.5), and the depth with LFO Modulation Depth(P.25).
Oscillator Bend Sens(P.25) or Filter Bend Sens(P.25)