Vcf Eg; Pwm; X-Mod; And - Korg MONO/POLY Owner's Manual

Mbr
bus
end.
since there are
foww
Slaw
osriilatrjft (which
produce em*
phaiind
harmonics) than
in
Single
mode
Q.FREQ
moo
(--
intensity**
end
•fcouroe")
Meets the
type
and amount
erf fre-
ejuariCY modulation applied
to
the
SfcweVCOsonly.
1
INTENSITY
Determines the depth of frequency
modulation
apptied to the Slave
otel'*
lators.
2.
SOURCE
a.
VCF EG
-
The
Voltage Controlled
Filter
Envelope Generator
is
used
to
weep
the Slave
oscillators
every
time
a
new
trigger is
generated (The
VCF may
be swept simultaneously
r
if
desired).
b>
MG-1
-
The output of Modulation
Generator
l
.%
mod
to
continuously
sweep
the Slavs
oscillators,
produc-
i'hj
a constantly
changing timbre
regardless of
whether
or
not
now
key*
are played
The
different
MG-T waveforms
may
be
used
to
create various kind* of
sweep*
D.
X-MOD
Intensity
Determines the
amount
of Cross
Modulation
m
X-MOD
or
S
& X
modes-
it
has
no
effect
in
SYNC
mode.
To
understand the
uses
of
this
section,
you should understand
the basic opera-
tion of
cast
of
(runs
effects*
SYNC
(Synchronized
Swept
Oscillators!
—
In
Sync mode, two
(or
more)
oscilla-
tors
are
first
electronically "locked"
to-
gether
{i.e.,
synchronized) such
that
one
or
nore
"Slave"
oscillators
are forced to
remain
in
perfect
tune with each "Mas*
ear"
oscillator. BY
itseHf (i.e.,
with
no
modulation).
Sync
is
useful for eliminat-
ing the
"beating"
effect
between
closely
tuned
oscillators,
(This
can be
obtained
by
engaging
SYNC
with th©
Effects
sec-
tion
FflEQMOD
control
at 'XI",)
If,
however,
you
attempt
to
"sweep"
(La,,
modulate over a wide
range) the
Slave
oscillators
us*ng
an envelope
genera-
tor,
modulation
generator,
or
pitch
wheat,
a
very
different effect
is
created.
Since the
sync
circuit
prevents the pitch
of Ihe Slave oscillators
from changing, the
waveform
is
altered instead,
in
effect
being "forced" through the
harmonic
series of
the Master
oscillator.
The
result
h
a
complex, constantly changing
wave
form which produces
a very
rich
and
exciting
sound
reminiscent of
an
over
rjriven lead
guitar.
The
FREO
MOO
controls
and the Enve-
lope Generator or
Modulation Generator
1
control settings
all
affect the
sound
produced.
The number
of Master and
Slave
oscillators
1SINGLE
DOUBLE) and
the
oscillators
initial
tuning (which con be
preset using the
CHORD
MEMORY
fea-
ture)
are
also
factors
tn
the
resulting
timbre.
X-MOD
{Crou
Modulation)
-
refers
to
one
lor
morel
oscillators
being
frequency
modulated by another
oscillator, resulting
in
a
series
of
complex non-harmonic
"sum and
difference" frequencies
(ceiled
srie
bands). This creates
a metallic "bail/
gong"-Jike
sound,
very similar to that of a
Ring
Modulator.
The X-MOD
Intensity
control has
a pronounced
effect
upon
the
overall sound, as does
the
VCO
waveform
settings, particularly
PWM*
Detuning the
oec-LLotors using the
CHORD MEMORV
feature
will further alter the
sound.
Ad
di| tonally
,
sweeping
the
modulated
rsfavn")
oscillators
with an envelope
generator,
modulation
generator
or
pitch
wheel
will create a highly
jnu&ual "con-
trary
motion"
effect,
with
different
pitches gliding in different directions.
SY
rvC/X-MOD
-
The
result
of
combining
both
SYNC
and
X-MOD
effects together
produces
yet
another group
of
sounds,
thereby further increasing the
flexibility
of
your Monopoly. As
wtth X-MOD,
one
osdllator
modulates
others
so
as to
pro
duce
sum and
difference frequencies
(side
bands).
Howftwr.
since the
oscillators
are
also
syrchromred and swept
as
in
SYNC
mode,
these
sidebands
all
become harmo-
nically related
The
result
of
this
is
an
intensified sweep
of
harmonics
that
con
onty be characterized
as
"shimmering"
and extremely
powerful
The
X-MOD
Intensity
has
a pronounced
effect
upon the tunal quality
of
the
combined
effect- At
"0", the normal
SYNC
sweep
ts
produced; advancing the
control
doefcwise
introduces gradual
changes
in
the
sound
Quality
and greater
timbre complexity.
21