Roland Super Jupiter MKS-80 Owner's Manual page 15

VCO
Modulation VCO's
frequency can be
controlled by
the
LFO-1
or
ENV-1
VCO
Modulation LFO-1 Depth (0-100)
VCO
Modulation
ENV-1 Depth
(0-100)
When
the LFO-1
is
modulating
the
VCO's
frequen-
cy,
this
value decides the intensity of the modula-
tion.
At
zero,
there
is
no modulation
obtained, and
as
the value
is
increased, deeper
pitch modulation
is
obtained.
When
the
ENV-1
is
controlling
the VCO's
frequen-
cy,
the value
set
here decides the
intensity of the
modulation.
At
zero, there
is
no modulation, and
as
the value
is
increased, deeper pitch moduiation
is
obtained.
Pulse
Width Modulation
The
ratio
of the
VCO's
pulse vwave
can be altered
by ENV-1
,
LFO-1
or
keyboard.
Pulse
Width (0-100)
gj
PWM
Mode
Selector (ENV, LFO, KYBD)
This
sets
the
ratio
of the
VCO's
pulse
wave. At
0,
pulse
width
ratio
is
50%, making
a
square wave.
And
as
you
increase the value, the pulse width
will
be-
come
narrower, the
sound
disappearing
just
before
100%.
PWM
(0-100)
The
ratio
of the pulse
wave
set
with the
Pulse Width
Q
can be modulated by the ENV-1
,
LFO
or key-
board.
The
PWM
Knob
decides the
intensity of the
moduiation. At value zero, there
is
no
modulation,
and
as
the value goes up, deeper modulation
is
obtained.
This
selects
which one
of the
ENV-1
,
LFO-1
or the
keyboard modulates the
pulse width.
*
Moduiating
pulse
width by keyboard
The width
of pulse
wave
generated from
the
MKS-80
can be changed depending on
the key
you
play.
If
all
the pulses are
set
exactly the
same
ratio,
higher
note
may
sound
thin.
To
solve
this
problem,
it
is
a
good
idea
to set
the pulse
in
the higher
pitch to
wider.
[0
PWM
Polarity
(NRM,
INV)
This
selects the polarity of
the waveform
or enve-
lope curve that controls
PWM.
For
instance,
if
using
the
ENV-1
for
modulation, the
pulse
width
gets
wider
in
the Normal,
and
narrower
in
the
Invert
mode.
75