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Korg PS-3300 Owner's Manual page 7

Polyphonic synthesizers
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AND
FUNCTIONS
SIGNAL
GENERATORS
(SG)
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GENERATORS
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WAVEFORM
SELECTOR
The waveform
determines
the
basic
tone
color.
PULSE
WIDTH
MODULA
TION SENSITIVITY
Adjusts
intensity of
PWM.
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COARSE TUNING
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octave)
OCTAVE SELECTOR
MODULATION
REVERSE
SWITCH
Reverses
phase
of
modulating
wave.
Mux*?*
MODULATION
SWITCH
Turns
FM
on and
off-
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INTERNAL
MODULATION
SENSITIVITY
Adjusts
intensity
of
modulation
from MG-1,
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EXTERNAL
MODULATION
SENSITIVITY
Adjusts
intensity
of
modulation
from
external
signal
(connected
to
FM
input
jack).
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FM
INPUT
JACK
For frequency modulation
from
ex-
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source.
UV
PWM
INPUT
Input
jack for external
modulation
of pulse width.
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TEMPERAMENT
ADJUST
Independent
tuning
knobs
for
all
12
notes.
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FREQUENCY(FREQ)
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1-1
Signal
Generators (SG)
This
section
is
what
is
commonly
called a
VCO
(Voltage Conrrolled
Oscillator).
With
these
knobs
you
have
control of pitch
and
the
choice of
several oscillator
waveforms
that
will
determine
basic
tone
color
(timbre).
When
the
12
independent
TEMPERA-
MENT
ADJUST
knobs
are
all
at
their
cen-
tral
"0"
positions,
the
keyboard
will
be
tuned
to the
conventional "well
tempered
scale".
These independent
tuning
knobs
let
you
tune each note
separately.
When
the
FINE
and
COARSE
tuning
knobs
arc
at
their
center
positions
also,
the
pitch
of
A
will
be 4401
Iz.
VibrtfO, pitch
bends,
and
the
like
are
prod-
uced bv frequency
modulation (FM);
use
the
MG-1 INT
and
EXT
INT
internal
and
external
modulation
sensitivity
knobs
to
adjust the intensity
(depth) of
this
modula-
tion.
The
modulation
switch
turns
FM
on
and off
Chorus
and
other
effects are
produced by
pulse
width
modulation (PWM).
When
an
external
signal
is
not patched
to the
PWM
input
jack,
MG-2
provides the
modulating
signal via
the
internal
(built-in)
patch.
Turn
the
WAVEFORM
knob
to
"
"
and
try
turning the
PWM
INT
knob
(which
adjusts
PWM
sensitivity)
from "0"
to
"10";
use
the
MG-2
frequency (FRF.Q)
knob
to
adjust the
speed of
the
modulation.
To
get
an
idea
of
the
amount
of
variation
available
in this
and other
effects,
play
one
key
near the center of the
keyboard and
beginning with
the
normal
setting try turn-
ing
one knob
at
a
time
working from
the
top-down.
The
maximum
input
sensitivity
for
frequency
modulation
is
a
1
octave
variation
per
1
volt input.

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