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10
VGA
(Voltage Controlled
Amplifier)
This
is
to control
the
volume
(amplitude)
of
the
sound,
and
is
normally
controlled
by
the
output
voltage
from
the
Envelope
Generator.
(?)
Select
switch
for
the control
signal
This switch enables
you
to select
whether
to
control
the
VGA
by
the
signal
from
the
Envelope Generator
or
by
the
Gate
signal.
ENV
(Envelope Generator)
This generates the Control Voltage applied
to
the
VCF
and
the
VGA,
thereby
controlling
the
volume and
the
tone
color of
each
note.
This
output
voltage
is
generated
whenever you
press
a
key.
®
@
A
{Attack time)
This
sets
the time required
for the voltage
to
reach
its
maximum
from
the
moment
the
key
is
pressed
down.
(3)
D(Decay
time)
This determines the time required
for
the
voltage to
drop
from
the
maximum
to the
sustain
level.
When
the
sustain
level
is
high,
the
Envelope
curve
does
not change by
adjusting the
Decay
Time.
S
(Sustain
level)
This
knob
determines
the Sustain
Level to
which
the voltage
falls
at
the
end
of the
Decay
Time.
(5)
R
(Release time)
This
sets
the
time needed
for
the voltage
to
reach
zero.
!ENV
OUTPUT
(ADSR)
iKYBO
GATE
OFF
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