P. 92, 92 creating a rhythm set – Roland Fantom-X7 User Manual
Page 92
92
Creating a Rhythm Set
fig.07-012_50
For details on these settings, refer to
TVF
Filter Type
Selects the type of filter. A filter cuts or boosts a specific frequency
region to change a sound's brightness, thickness, or other qualities.
Value
OFF:
No filter is used.
LPF:
Low Pass Filter. This reduces the volume of all
frequencies above the cutoff frequency (Cutoff Freq)
in order to round off, or un-brighten the sound. This
is the most common filter used in synthesizers.
BPF:
Band Pass Filter. This leaves only the frequencies in
the region of the cutoff frequency (Cutoff
Frequency), and cuts the rest. This can be useful
when creating distinctive sounds.
HPF:
High Pass Filter. This cuts the frequencies in the
region below the cutoff frequency (Cutoff
Frequency). This is suitable for creating percussive
sounds emphasizing their higher ones.
PKG:
Peaking Filter. This emphasizes the frequencies in
the region of the cutoff frequency (Cutoff
Frequency). You can use this to create wah-wah
effects by employing an LFO to change the cutoff
frequency cyclically.
LPF2:
Low Pass Filter 2. Although frequency components
above the Cutoff frequency (Cutoff Frequency) are
cut, the sensitivity of this filter is half that of the LPF.
This makes it a comparatively warmer low pass
filter. This filter is good for use with simulated
instrument sounds such as the acoustic piano.
LPF3:
Low Pass Filter 3. Although frequency components
above the Cutoff frequency (Cutoff Frequency) are
cut, the sensitivity of this filter changes according to
the Cutoff frequency. While this filter is also good
for use with simulated acoustic instrument sounds,
the nuance it exhibits differs from that of the LPF2,
even with the same TVF Envelope settings.
If you set “LPF2” or “LPF3,” the setting for the Resonance
parameter will be ignored.
Cutoff Frequency
Selects the frequency at which the filter begins to have an effect on
the waveform’s frequency components.
Value:
0–127
With “LPF/LPF2/LPF3” selected for the Filter Type parameter,
lower cutoff frequency settings reduce a tone’s upper harmonics for
a more rounded, warmer sound. Higher settings make it sound
brighter.
If “BPF” is selected, harmonic components will change depending
on the TVF Cutoff Frequency setting. This can be useful when
creating distinctive sounds.
With “HPF” selected, higher Cutoff Frequency settings will reduce
lower harmonics to emphasize just the brighter components of the
sound.
With “PKG” selected, the harmonics to be emphasized will vary
depending on Cutoff Frequency setting.
Resonance
Emphasizes the portion of the sound in the region of the cutoff
frequency, adding character to the sound. Excessively high settings
can produce oscillation, causing the sound to distort.
Value:
0–127
fig.06-034.e
Cutoff V-Curve (Cutoff Frequency Velocity
Curve)
Selects one of the following seven curves that determine how
keyboard playing dynamics (velocity) influence the cutoff frequency.
Set this to “FIXED” if you don't want the Cutoff frequency to be
affected by the keyboard velocity.
Value:
FIXED, 1–7
fig.06-036
Modifying the Brightness of a
Sound with a Filter (TVF/TVF Env)
3
1
2
LPF
BPF
HPF
PKG
parameter value
Level
Cutoff frequency
Frequency
High
Low
1
2
3
4
5
6
7
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