Roland JX-305 Owner's Manual page 62

Chapter 5. Creating Original Sounds (Patch Edit)
HPF (High Pass Filter):
This filter allows frequencies above the cutoff frequen-
cy to pass. It is used to make the sound brighter and
sharper.
PKG (Peaking Filter):
This filter boosts the overtones in the region of the cut-
off 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 (LFO1 Filter Depth)" (p. 73)
Brightening the sound (Cutoff Frequency)
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,
5
you can control the brightness of the sound.
1. In the REALTIME MODIFY section, press [FIL-
TER/AMP/PITCH] several times to make the
FILTER indicator light.
2. Rotate the [CUTOFF] knob to adjust the cut-
off frequency value.
fig.5-24 (#MC fig.3-23)
FILTER
AMP
PITCH
Range: 0–127
The effect will depend on the Filter Type.
LPF (Low Pass Filter)
Rotating the knob clockwise will cause the sound to
become brighter, approaching the original waveform.
Rotating it counterclockwise 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.
fig.5-25TEXT (#MC fig.3-24)
62
CUTOFF
LEVEL
PORTA TIME
Level
BPF (Band Pass Filter)
Rotating the knob clockwise will raise the frequency
area that is heard. Rotating the knob counterclockwise
will cause only a progressively lower frequency area
to be heard.
fig.5-26TEXT (#MC fig.3-25)
Level
HPF (High Pass Filter)
When the knob is turned clockwise, the low frequency
range will be cut more greatly, making the sound
sharper. As the knob is rotated toward the left, the
original sound of the waveform will be heard.
* For some waveforms, you may hear no sound if this value
is raised excessively.
fig.5-27TEXT (#MC fig.3-26)
Level
PKG (Peaking Filter)
When the knob is turned clockwise, the frequency area
that is emphasized will rise. Rotating the knob coun-
terclockwise will lower the frequency area that is
emphasized.
fig.5-28TEXT (#MC fig.3-27)
Level
Frequency
Frequency
Frequency
Frequency