Roland VS-700 用户手册
131
Creating a Rhythm Set
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Rhythm 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.
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.
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
tones.
region below the cutoff frequency (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 (Cutoff
Frequency). You can use this to create wah-wah
effects by employing an LFO to change the cutoff
frequency cyclically.
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.
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.
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
Modifying the Brightness of a Sound
with a Filter (TVF/TVF Env)
with a Filter (TVF/TVF Env)
LPF
BPF
HPF
PKG
parameter value
Level
Cutoff frequency
Frequency
High
Low
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