Roland D-50 Owner's Manual page 68

TONE PARAMETERS
@Aftertouch Range Ring led]
This sets the sensitivity of the aftertouch
that controls the pulse
width from —7 to +7. With "—"
values, the pulse width becomes
smaller with stronger aftertouch, and with "+"
values, the pulse
width
becomes wider
with stronger
aflertouch.
@LFO Select
Pulse Width Modulation (PWM)
means
changing the
pulse width
periodically.
LFO Select decides which of the LFO's is to be used
for modulating the pulse width.
ao]
Positive Phase
Negative Phase
AA
PPS
Se Fina 4] 10 oy
e. TVF
{Display 30]
Bias range Bias level
Key Follow Key Follow Adjustment
Resonance
36