98
Creating a Patch
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 Freq), 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 Freq). 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 (Cutoff Freq). 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 Freq) 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 Freq) 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 (p. 98).
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.
To edit the overall patch while preserving the relative
differences in the Cutoff Frequency values set for each tone, set
the Cutoff Offset parameter (p. 90).
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
To edit the overall patch while preserving the relative
differences in the Resonance values set for each tone, set the
Resonance Offset parameter (p. 91).
fig.06-034.e
Modifying the Brightness of a
Sound with a Filter (TVF/TVF Env)
LPF
BPF
HPF
PKG
parameter value
Level
Cutoff frequency
Frequency
High
Low
Fantom-G_r_e.book 98 ページ ２００９年７月２日 木曜日 午後２時５５分
