Roland MC-202 - Cutoff Frequency; Vcf

VCF
(Voltage
Controlled
Filter)
The
VCF
is used
to
alter
the
tone
color
of the
SOURCE
MIXER
output by
cutting
or
boosting
harnnonics
in that
sound.
The
VCF is a
LOW
PASS
filter
which
passes
low
frequencies
and
blocks
high
frequencies,
and
the
Cutoff Point
is
controlled
by
the
voltage.
(§)
®
(2)
® ®
®
(D
FREQ
•
Cutoff
Frequency
knob
This
knob
deternnines
the
Cutoff
Point
of the
VCF. In
its
highest
position,
the
sound
will pass
unchanged.
As
you
lower
the
knob, the
frequen-
cies
in the
higher
pitch
range
will be
cut,
thereby
the
sound
fades
out in
its
lowest
position.
®
RES
•
Resonance
knob
This knob
is to
emphasize
the
frequency
at
the
point
set
with
the
Cutoff
Frequency
knob
(5).
As
you
raise
the
knob,
certain
harnnonics
are
boosted
and
sound
will
be
more
unusual,
more
electronic
in
nature.
If
setting
the
Resonance
knob
to
the
high
position
and
move
the
Cutoff
Frequency
knob,
you
can
obtain
a
type
of sound
that
is
impossible
to
be
produced
by
any
other
musical
instrument.
At
its
highest
level,
self-os-
cillation
will begin
(at
the
Cutoff
Point).
(7)
ENV
•
ENV
Depth
knob
When
Cutoff
Point
of
the
VCF
is
controlled by
the
output
signal
from
the
Envelope
Generator,
this
knob
adjusts
the
depth
of the
modulation.
You can
change
the
Cutoff
Point
of the
VCF
in
each
note
with
the
ADSR
pattern
previously
set.
So
the
tone
color
of
each
note
can be
changed
quite
drastically.
(D
MOD
•
Modulation
Depth
knob
When the
Cutoff
Point of
the
VCF is
controlled
by
the
output
signal
from
the
Modulator,
this
knob
is
used
to
adjust the
intensity of
the
mod-
ulation.
How
it
works
varies
depending
on
the
waveform
of
the
Modulator.
(9)
KYBD
•
Key
Follow
knob
When
the
Cutoff
Point
of
the VCF
is
controlled
by
the
KYBD
CV
(Keyboard
Control
Voltage),
this
knob
adjusts
the
intensity
of the
modulation.
It
prevents
any
inconsistency
in the
harmonic
con-
tent
caused
by
pitch
alteration.
Consequently
this knob
is usually
set
to the
maximum
on
such
a
long
keyboard,
but
can
be
set to
your taste.