Korg ESX-1 Owner's Manual page 50

TYPE ............................................................ LPF, HPF, BPF, BPF+
Selects the type of filter.
LPF (Low Pass Filter): Cuts the high-frequency region, making the sound
HPF (High Pass Filter): Cuts the low-frequency region, making the sound
BPF (Band Pass Filter): Outputs only the region in the area of the cutoff
BPF+ (Band Pass Filter Plus): Adds the output of the band pass filter to
If the sound does not change when you turn the knobs or switch the
keys, either those knobs or keys are not valid for this part, or a Mo-
tion Sequence ( p.68 "Motion Sequence") is running.
50
more mellow.
sharper.
frequency.
the original waveform