Roland Fantom-Xa - Manual (Page 62)

62
Creating a Rhythm Set
A filter cuts or boosts a specific frequency region to change a sound’s brightness, thickness, or other qualities.
[F1 (TVF PRM)]
Parameter Group [F4 (TVF)]
Modifying the Brightness of a Sound with a Filter (TVF/TVF Envelope)
Parameter Value Explanation
Filter Type OFF,
LPF,
BPF,
HPF,
PKG,
LPF2,
LPF3 Type of filter
OFF: No filter is used.
LPF: Low Pass Filter. This reduces the volume of all frequencies above the cutoff frequency in order to
round off, or un-brighten the sound.
BPF: Band Pass Filter. This leaves only the frequencies in the region of the 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. This is suitable
for creating percussive sounds emphasizing their higher tones.
PKG: Peaking Filter. This emphasizes the frequencies in the region of the 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 are cut, the sensi-
tivity of this filter is half that of the LPF. 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 are cut, the sensi-
tivity 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 0–127 Frequency at which the filter begins to have an effect on the waveform’s frequency components
Resonance 0–127 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.
Parameter Value Explanation
Cutoff V-Curve FIX, 1–7 Curve that determines how keyboard playing dynamics (velocity) will affect the cutoff frequency
Set this to “FIX” if you don’t want the Cutoff frequency to be affected by the keyboard velocity.
Cutoff V-Sens -63– +63 Use this parameter when changing the cutoff frequency to be applied as a result of changes in playing ve-
locity. If you want strongly played notes to raise the cutoff frequency, set this parameter to positive (+) set-
tings.
Resonance V-Sens -63– +63 This allows keyboard velocity to modify the amount of Resonance.
If you want strongly played notes to have a greater Resonance effect, set this parameter to positive (+)
settings.
LPF BPF
Resonance
HPF PKG
parameter value
Level
Cutoff frequency
Frequency
High
Low
1 2 3 4 5 6 7
Fantom-Xa_e.book 62 ページ ２００４年１０月２２日 金曜日 午後２時３分