Korg RK-100S - Advanced Program Operations; Copying and Editing Program Information; Initializing and Restoring Programs

18
RK-100S parameter guide
FILTER
The lter section changes the tonal character of the oscillators by passing only
the desired portion of the sound - either above (Low Pass), below (High-Pass), or
centered on (Band Pass) the cuto frequency. The RK-100S has two lters (lter 1
and lter 2), and you can change their routing to create more complex lter sounds.
FILTER 1
CUTOFF [000...127]
Sets the cuto frequency. Increasing this value will raise the cuto frequency.
“CUTOFF” can be varied by time-variant changes produced by FILTER EG, by
keyboard playing dynamics (velocity), and by note location (keyboard tracking).
If the “CUTOFF” value is set too low, the volume may be extremely low, or
you may hear no sound at all.
RESONANCE [000...127]
Sets the resonance of the lter. This will emphasize the overtones near the cuto
frequency that are specied by “CUTOFF,” adding a distinctive character to
the sound. Increasing this value will increase the eect. Since movement of the
“CUTOFF” knob will aect the overtones that are boosted by resonance, it is
best to adjust “CUTOFF” and “RESONANCE” in conjunction with each other.
LPF
HPF
BPF
Low resonance value High resonance value
Depending on the cuto frequency or the input audio, increasing this value
may cause distortion.
BALANCE [LPF24...LPF12...HPF...BPF...THRU]
Selects the lter type. Intermediate seings will produce a response that is
between the two lter types.
LPF12 (–12dB/oct), LPF24 (–24dB/oct): Low Pass Filter. LPF (Low Pass Filter) is the
most common type of lter; it passes the frequencies below the cuto frequency
and cuts the region above. Raising the cuto frequency (“CUTOFF” value) will
produce a brighter tone.
Frequency
LPF (Low Pass Filter)
-12dB/oct
-24dB/oct
Cuto
HPF (–12dB/oct): High Pass Filter. HPF (High Pass Filter) passes the frequencies
above the cuto frequency and cuts the region below. Use this when you want
to make the tone thinner. However, raising the cuto frequency too far will
drastically reduce the volume.
Frequency
HPF (High Pass Filter)
Cuto
BPF (–6dB/oct): Band Pass Filter. BPF (Band Pass Filter) passes the frequencies in
the region of the cuto frequency, and cuts all other frequency regions. Use this
when you want to emphasize only a specic portion of the sound.
Frequency
BPF (Band Pass Filter)
Cuto
THRU: The sound will output directly, without passing through the lter.