Yamaha CS-01 Owner's Manual page 12

SOUND
CREATION
IV/EG
EG
BLOCK
The
EG
block contains the
CS01 envelope generator controls.
The
sound of an instrument
is
largely
determined by
its
pitch, tone,
volume
and envelope. Piano and
flute
sounds,
for
example, consist of basically
the
same waveform, but have completely different
level
envelopes.
A
flute
sound
builds
up
a relatively
slow attack and continues
at a
sustained
level,
while a piano note begins rapidly
(fast
attack)
and then
decays gradually.
The CS01
EG
block
lets
you
create
an exceptionally broad range of
level
envelopes.
©
ATTACK
TIME
LEVER
Determines
how
long
it
takes for the
sound
to reach
maximum
level
after a
note
is
played on the keyboard.
The more
this
control
is
set
towards the
"L" end
of
its
scale,
the longer the attack.
<D
DECAY
TIME
LEVER
Determines
how
long
it
takes
for
the
sound
to decrease to sustain
level
after
maximum
attack
level
has been reached.
The more
this
control
is
set to the
"L"
end
of
its
scale,
the longer the decay.
If
the
SUSTAIN
LEVEL
control (described next)
is
set
to
maximum,
no decay
effect will
be produced.
SUSTAIN
LEVEL LEVER
Determines
the
continuous
level
to
be maintained
after attack
and
decay are finished, as long
as
a
key
is
held.
The more
this
control
is
set
towards the
"10"
end of
its
scale,
the higher the sustain
level.
When
applied to the
VCF,
the sustain
level
determines the
VCF
cut
off point.
11