Roland Groovebox MC-307 Reference Manual page 92

Chapter 6 Making Original Patches
- PKG (Peaking Filter):
This filter enhances audio signals with frequencies
around the cutoff frequency. It will emphasize the mid-
range, and is useful for creating a distinctive sound.
By selecting the Peaking Filter as the Filter Type and
using the LFO to modulate the cutoff frequency, you can
create a "wah" effect.
- > "Adjusting the depth of cutoff frequency modulation (LFO 1
Filter Depth)" (P. 97)
92
FILTER: CUTOFF
Specifies the frequency at which the filter will begin to affect
the frequency components of the waveform (the Cutoff
Frequency). By changing the cutoff frequency, you can
control the brightness of the sound.
Range: 0–127
The effect will depend on the Filter Type.
- LPF (Low Pass Filter)
Increasing the value will brighten the sound, making it
more similar to the original waveform., approaching the
original waveform. Lower settings will cut more of the
high frequency overtones, making the sound darker.
* For some waveforms, you may not be able to hear any sound if
you lower the value too far.
Level
CUTOFF=0 CUTOFF=64
- BPF (Band Pass Filter)
Higher settings will raise the frequency area that is
heard. Lower settings will cause only a progressively
lower frequency area to be heard.
Level
CUTOFF=0 CUTOFF=64
- HPF (High Pass Filter)
As this value is increased, the low frequency range will
be cut more greatly, making the sound sharper. As this
value is decreased, the original sound of the waveform
will be heard.
* For some waveforms, you may hear no sound if this value is
raised excessively.
Level
CUTOFF=0 CUTOFF=64
Frequency
CUTOFF=127
Frequency
CUTOFF=127
Frequency
CUTOFF=127