Filter
37
MS-20 LPF and HPF:
These 12dB/octave, self-resonating filters lovingly recreate the distinctive timbral signature of the
classic Korg MS-20. If the input level is high, raising
Resonance
will cause increasing amounts of saturation and
overdrive, creating a more aggressive tone. To control this, use
Trim
(see “Trim” on page 38).
Polysix:
This 24dB/octave, self-resonating low-pass filter provides the strong, sweet sound of the classic Korg Polysix.
Cutoff
(CUTOFF)
[-4.00 or +8.00…+136.00 or +138.00 semitones]
This controls the cutoff frequency of the filter, in semitones mapped to MIDI note numbers (60.00 = middle C). The
frequency in Hz is also shown. The specific effect of the cutoff frequency will change depending on the selected
Type
,
as described above. Most filter types have a range of
-4.00
to
+138.00
, but the
MS-20 LPF/HPF
and
Polysix
range from
+8.00
to
+136.00
.
Res (
RESONANCE)
[0.00…100.00%]
Resonance
emphasizes the frequencies around the cutoff frequency, as shown in the diagram below.
When this is set to
0
, there is no emphasis, and frequencies beyond the cutoff will simply diminish smoothly.
At medium settings, the resonance will alter the timbre of the filter, making it sound more nasal, or more extreme.
At very high settings, the resonance can be heard as a separate, whistling pitch.
(Resonance) Bass
[Full, Tight]
This is available only when
Type
is one of the
2-pole Resonant
or
4-pole Resonant
settings, or
Multi Filter
.
Resonance
Bass
controls the character of the filter resonance at low cutoff frequencies. Its effect is most noticeable with high
Resonance
settings.
Tight
produces a more restrained resonance, similar to a classic, American, wood-paneled monophonic synthesizer.
Full
produces a wide, boomy resonance, reminiscent of a famous five-voice American synthesizer.
Resonance Type
[Standard, High]
This is available only when the
Type
is set to one of the
4-pole
settings.
Standard
provides the resonance character of a typical analog 4-pole filter.
High
creates a more pronounced resonance.
Low Resonance
High Resonance