# Yamaha CS-80 Instruction Manual page 39

VGA
(Voltages
Controlled Amplifier)
(35]
VCF LEVEL
-
the
amount
of
mput
to
th-G
the?
VGA
provided
by
the
VGO"?
squ^r^
wave, saw-
tooth
wave
and
/or
noise generators
ar\d filtered
by
the
VGF.
[36]
SINE
WAVE
LEVEL -
the
amount
of
input
to the
VGA
provided by the
VCO's
sine
wave
generator.
Since
the sine
wave
does
not
go through
the
VCF,
it
mav
be
mixed
in
any proportion with
the
VCF-processed
signals a5
it
enters
the
VCA.
[37]
A
{Attack
houir
I
ong
it
takes for
the
level
to increase to
a
nnaximum
each
tin^e a
note
i\$
played.
f38]
D —
(Decay Time)
how
long
it
takes
for
the
level
to
dficrcaso
from
a
maximum
to
a
(sustainetH
level t^ach
time
a
note
is
played.
[39]
S
-
(Sustain Level)
level
of
a
note
that
is
[after
attack
and
decayj so long
as a
key
is
beW
dowrt.
[40]
R
-
(Release
Time)
how
long
it
takes
for
the
level
To
die to silence
after
yoo
relees-e
a
kev-
The
e-ffect
is
like
tbe
sustain
time provided
by
the controls
in
[13].
Hi
]
LEVEL -
(VCA
Level
f
Sets the highest
level
attained
by
the
S/CA, thus
affecting the
sustai n level
and
the
maximum
attack
level.
If
VCF LEVEL
135]
and
SINE
WAVE
LEVEL
[36] are
thought
of as
input
mixir^g controls,
then
t^iis
slider
serves
as
the
VGA's
master output
control.
from
VCF
fS^
VCP
r-TxT-jvr-j^
-*-
q
1^
«*
4
>»4
Out
35
Loud
rMM"-j"-Jxr--.-^
-
Quid
/Y/V^vAy\
(Square
w^v<? jundyor
noise Dould
^ha
b^
used.
here,
f
Mk^cmg
sine
wave
with
VCF
processBti
vuBvetorm
LEVEL
VSTIWie
*
Tim*
Tirryp
t
I
J
li
f
1
Nor^L hAaKiimum
level
^et
by
Suft^i^
^
L^vel
i^
CHawql
mi
-VL
Tipnii
iPiCfii
Lcnur
^^M
/
\
^
I
i
p
V
I
J
.
H
*l