(Filter Envelope) - Roland JX-305 Owner's Manual

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.
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.
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 counterclockwise, the
original sound of the waveform will be heard.
* For some waveforms, you may hear no sound if this value
is raised excessively.
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.
Adding a distinctive character to the
sound (Resonance)
This setting emphasizes the overtones in the region of
the cutoff frequency, adding character to the sound.
1. In the REALTIME MODIFY section, press [FIL-
TER/AMP/PITCH] several times to make the
FILTER indicator light.
2. Rotate the [RESONANCE] knob to adjust the
resonance setting.
fig.6-16 (#MC fig.3-112)
FILTER RESONANCE
AMP PANPOT
PITCH FINE TUNE
Range: 0–127
As the knob is rotated further clockwise, the sound
will have more character. Rotating it counterclockwise
will make the sound more natural.
Chapter 6. Creating an Original Rhythm Set (Rhythm Edit)
Depending on the cutoff frequency setting, raising the
resonance excessively may cause the sound to distort
suddenly. In order to prevent the resonance from
being increased excessively, factory settings have been
made so that the value will not rise beyond "110" even
if the [RESONANCE] knob is rotated all the way to the
right. This is called the Resonance Limiter. You are
free to adjust this upper limit.
"Specifying the Variable Range of
Resonance (Resonance Limiter)" (p. 169)
If you have increased the Resonance Limiter setting,
be careful not to raise the resonance excessively.
Making the Brightness Change
Over Time (Filter Envelope)
On acoustic instruments, the tone quality (brightness)
often changes over the duration of a note. For exam-
ple, on a piano, the sound at the beginning of each
note contains many overtones (i.e., has a bright tone),
and as the note decays to silence, the overtones dimin-
ish, making the sound more mellow. The F-ENV
(Filter Envelope) parameters let you create this type of
tonal change over time.
Filter envelope settings
1. In the REALTIME MODIFY section, press [FIL-
TER/AMP/PITCH] several times to make the
FILTER indicator light.
2. Press [ENVELOPE/LFO1/EFFECTS] several
times to make the ENVELOPE indicator
light.
3. Use the [ATTACK] / [DECAY] / [SUSTAIN] /
[RELEASE] knobs to adjust the filter enve-
lope values.
Range: 0–127
fig.6-18TEXT (#MC fig.3-114)
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