Korg PS-3300 - DYNAMIC LOW-PASS FILTERS (DLPF); CUT-OFF FREQUENCY (Fc); PEAK ADJUSTMENT; KEYBOARD FILTER BAL- ANCE

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1-2
DYNAMIC
LOW-PASS
FILTERS
(DLPF)
fig. DLPF
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CUT-OFF
FREQUENCY
(Fc)
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*
PEAK
ADJUSTMENT
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ERIN
SRS
EMS
Emphasizes
resonance
at
cut-off
point,
¢ KEYBOARD FILTER BAL-
ANCE
Adjusts the Fe of each of the key’s
independent low-pass filters over a
rising or falling slope corresponding
to the scale of the keyboard.
* EXPAND
Adjusts the degr
envelope signal
to which the EM
jects the Fe.
* MODULATION SWITCH
ABEBIOS STMORS MSL ET
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On/oft
switch
for
cutoff
frequency
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kA
7M
ON-OFF
EL
ET
modulation.
© INTERNAL MODULATION
SENSITIVITY
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*
EXTERNAL
|
MODULATION
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Adjusts depth of modulation from
external signal,
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CUT-OFF
INPUT
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For
FeM
from
external
signal
MODULATION
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1-2. Dynamic Low-pass Filters
(DLPF)
This section corresponds to the VCF of a
monophonic synthesizer. It processes the
waveform (which is the primary determi-
nant of tone color) coming from the SG.
The FC knob controls the cut-off frequen-
cy. Since these are low-pass filters, the
harmonic elements of the waveform which
are higher than the cutoff frequency will
be shaved off, thereby producing a more
rounded sound.
The PEAK knob controls the amount of
emphasis given to the frequencies right
below the cutoff frequency. In other
words, it varies the slope steepness (Q) of a
resonance at the cut-off point.
Use the keyboard filter balance (KBD F
BAL) knob if you want the cut-off fre
quency to be different for different parts
of the keyboard.
Each key has its own filter (VCF), the
cutoff frequency of which can be varied
independently; this knob raises or lowers
the Fe of each key to conform to a rising
or falling slope corresponding to the scale
of the keyboard. With the EXPAND knob
you can make the cut-off frequency vary
along with the “envelope” (the volume
contour) determined by the controls in the
EM section (Attack, Decay, Sustain,
Release).
Cutoff frequency modulation (FeM) for
such effects as wow and growl is controlled
in the same way as frequency modulation
in the SG section.
Starting from the normal setting, check out
what happens when you use the controls in
the DLPF section; note that if yow turn the
Fc knob all the way to “0”, the sound may
become so rounded that it is inaudible.