Yamaha DX1 Owner's Manual page 24

(e)
Ll (Level 1):
the initial level when
a
key is pressed,
(f)
L2 (Level
2):
an
intermediate level
between Level
1
and Level
3,
(g)
L3
(Level
3):
The sustain level
maintained while
a
key
is
held,
(h)
L4 (Level
4):
The basic level
returned
to
after
a
key is
released,
*
For the
RATE parameter:
99 is
the
fastest rate and
is
the slowest.
*
LEVEL determines
the
operator level
at
each point along the
EG curve.
LEVEL
is
determined
by
setting
the
required
amount
of
attenuation
(-dB)
Operator LEVEL
is
maximum when set at
99,
and minimum when
set
at (-96 dB)
*
If a
carrier
L4
is set to any value
greater than
1,
sound will continue
to
be output even
if no
keys are pressed.
*
V/hen
the EG is not to
be
used, set
Ll
L2,
and
L3 to
99,
and
L4 to
0.
(The
initial voice data £ettin9s
are:
Ll—
L3
=
99,
L4=0,
Rl~R4=99)
-*P.44
*
Since in the FM tone generator system
the carriers control pitch and level
while
the
modulators control
timbre,
applying
the
EG to
a
carrier results
in
a
correspondng level variation, while
applying
EG
to
a
modulator results
in
a
timbre variation.
*
Figure
48
shows an example
of a
piano
carrier envelope.
Figure
49 is an
Fig. 31. DXl Basic
EG Pattern
®R1 ©R2
<DR3
®R4
i<ey
on
key off
time
Fig. 32. Piano Carrier Envelope
Ll=99
^R2
=
60
02
=
80
Rl=99
R3
=
30
L3=0
U=0
key on
Fig. 33. Organ Carrier Envelope
11=99
\R2=60
R4
=
99
L2=80. L3=£
Rl=99 L4=0
key on
key off
Fig, 34.
Brass Carrier Envelope
,ji2=5o3^R3=50
Rl=70
R4-50
L4=0
organ carrier envelope, and figure
50
is
a
brass wind instrument modulator
envelope.
*
The
EG
parameters can be set
indipendently
for each operator.
However, when there will not be
a
great
difference between the
EG
settings
for
each operator, the FUHCTIOU node COPY
OPERATOR DATA function can greatly
shorten
the
EG
setup process,
^P.42
*
V7hen
the
sustain footswitch
is used, all
EG pararaeters
come into play. For
example,
when
the
footswitch
is
pressed,
the
key-on state
is
held and
the EG
responds accordingly
—
i.e.
if
L3 is
set at
99,
the sound will
continue
at that level as long as the
footswitch is helo. Uhen the
footswitch
is
released (and no keys are
pressed) to sound returns to
L4 at
the
rate determined by R4 (fig, 51a), If
L3 is
set between
1
and
98,
then the
sound level will reach L3 at the rate
R3
when the keys are all released, then
the level will return to
L4
at rate R4
v/hen
the
footswitch
is
released
(fig.
^
51b). If L3
is set to
0,
then the
^
sound will decay towards at rate
3
when
the keys are released,
and the
decay rate
v/ill
switch
to R4 v/hen
the
footswitch
is
released
(fig,
51c),
If
L3=0, R3 =
99
and
P.4
=
99,
no
sustain
effect can be produced.
Further, when
L2=L3=1
—
99, the L2
5.
L3
level will be
held
as
long as the footswitch is held.
^P.S7
Fig, 35,
Sustain Effect
a.
(pedal on)
*
key off
pedal off
(pedal on)
f
key off
PITCH
EG (fig.
3G)
pedal off
key on
The pitch
EG
affects all operators
simultaneoulsy, permitting application
of
an
overall pitch envelope. The PITCH
EG
parameters
are as follows:
(a)
Rl (Kate
1):
the time
it
takes to
reach Level
1
pitch after
a
key is
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