Korg Soundlink DRS OASYS PCI Patches & Effects Manual page 429

Filters
Sustain
0-100. This sets the sustain level for the filter envelope. After the decay time is
complete, the envelope will stay at this level as long as the note is held.
Release
0-100. This sets the release time of the filter envelope, which controls how long it
takes the envelope to fall to zero after the note is released.
ADSR Envelope
Mode
Lowpass, Highpass, Bandpass. This selects whether the filter will cut high
frequencies (Lowpass), cut low frequencies (Highpass), or cut all frequencies above
and below the cutoff point (Bandpass).
Lowpass. Frequencies above the cutoff will be attenuated, and frequencies below
the cutoff will pass through unchanged.
Highpass. Frequencies below the cutoff will be attenuated, and frequencies above
the cutoff will pass through unchanged.
Bandpass. Frequencies both above and below the cutoff will be attenuated, and
only frequencies right at the cutoff will pass through unchanged.
Type
4 Pole, 2 Pole, 2 Pole > 2 Pole. This parameter selects the amount of frequency
attenuation in the filter, and the character of the resonance.
4 Pole. This is a 24dB per octave filter. Of the three types, the 4 Pole offers the
greatest attenuation of frequencies beyond the cutoff, coupled with a resonance
slightly more delicate than the 2 Pole type. Many classic analog synths used this
general type of filter.
OASYS PCI
Attack time Decay time
Sustain
Level
Sustain while Release time
holding note
Rez Filter Env
421