Modifying The Brightness Of A Sound With A Filter (Tvf/Tvf Env) - Roland Fantom XR Owner's Manual

Creating a Patch
Modifying the Brightness of a
Sound with a Filter (TVF/TVF Env)
For details on these settings, refer to "How to Make Patch
Settings" (p. 46).
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
No filter is used.
OFF:
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.
Low Pass Filter 2. Although frequency components
LPF2:
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. 58).
58
Cutoff Frequency ★
Selects the frequency at which the filter begins to have an effect on
the waveform's frequency components.
0–127
Value:
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. 49).
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. 50).
fig.06-034.e
LPF BPF
Level
High
Frequency
Cutoff frequency
Low
HPF PKG