Yamaha CS-80 Instruction Manual page 37

VCF
jVoltagie
Controil&d
Filter!
(261
HPF -
Sets the
cutof-f
point of the High Pass
Filtsr
(low cut
filter).
With the
slictef at
LOW,
th&
cut-
off
frequency
i£
lowest
[fklter
wide
open)^
^nd
at
HI<3H
the cutoff
frequency
is
highest
if
i
Iter
clo&edf.
[271
RES^ -
Sets the
Resonance
(0) at
the cutoff
point of the
High
Pass Filter
Th&
HIGH
setting gives
Ttidj<iniuiT»
rescmance.
[23i
LPF
-
Set5^
the
cuto-ff
point of the
LOW
Pass
Filter
(high cut
filter).
With
the
slider
at
LOW,
the cut-
off
frequency
is
lowest
filter closed),
and
at
HIGH
the
cutoff
frequency
is
highest
{filter
wide open).
[29]
RES. -
Sets the
Resonance
(Q)
at
the cutoff
point
0"f
the
Low
Pass
Filter.
The
HIGH
settiny gives
maximum
resonance.
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K-
Fnecujencies ^^'
by
HPF
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33
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znx
F
ir«c|uerkcie£
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by
LPF
\L
HE£|.
VCF
Envelope Generator
NOTE:
Yamaha's
fiker
envelope ^ner^tor, with
^'IL-AL-A-D-R/'
is
unique
among
synthesizers.
[30]
IL
-
(Initial
Level)
Lowers
the initial filter
cut-
off points of the high pass
and low
pass filters
{when
a
note
is first
played) relative to the
"steady"
levels
set
with the
HPF
and
LPF
sliders.
Moving
IL
up
towarcl
"-5"
is
like
starting with
HPF
and
LPF
lower
than their sustained cutoff points
and then
moving
them
together to their sustained levels.
[31
1
AL
—
(Attack
Level) Raises the filter
cutoff
points
when
a
note
is
first
pEayed,
The
AL
rise
occurs
while
you
hold a key
down, beginning
from
the
"steady" Cutoffs set
with the
HPF
and
LPF
sliders,
going to the
maximum
frequency
set
with
AL
slider,
end
then returning to the
"steady" cutoffs.
[32]
A -
(Attack
Time)
Adjusts
how
long
it
takes
for the
filtE^rs
to
move from
the
ami
nimum
I
L to the
maximum A
L cutoff frequencies
when
either or
both
of
thes& sliders
is
moved,
up from
''0".
Attack Time
has
no
effect
if
IL
and
AL
are
hcth
at
'0".
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