Roland VC-2 Owner's Manual page 44

Effects List
03: Resonant Filter
It allows for cyclical control of the cutoff frequency using an
LFO. It allows you to make drastic changes in the frequency
response of the input signal by the cutoff frequency and
feedback, making the sound brighter or darker, or giving it a
distinctive character.
Parameter Value
Cutoff Freq 50–20000 Hz
Resonance 0–127
Band Mode LOW, MID,
HIGH,
LOW+MID,
MID+HIGH,
ALL
Sweep Wave- TRI, SAWUP,
form SAWDN, SQR
SAWUP
Sweep Rate 0.05–10.0 Hz,
note
Sweep Depth 0–127
Balance DRY100:0WET–
DRY0:100WET
04: Isolator and Filter
A 3-band isolator, filter, and low booster are connected in
stereo in series.
Isolator is an equalizer which cuts the volume greatly,
allowing you to add a special effect to the sound by cutting the
volume in varying ranges.
The filters allow you to modify the frequency response of the
input sound widely and give sound a character.
The low booster emphasizes the bottom to create a heavy bass
sound.
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Description
Basic frequency of the filter
The LFO will control the cutoff
frequency with this value as its
maximum level.
Filter's resonance level
Raising the setting increases
resonance near the cutoff fre-
quency, producing a uniquely
characteristic sound.
Frequency range to which the
filter will be applied
LOW: low frequency band
MID: mid-range frequency
HIGH: high frequency
LOW+MID: low and middle
range frequency
MID+HIGH: middle and high
range frequency
ALL: all ranges
LFO waveform
TRI: Triangle wave
SAWUP: Sawtooth Wave
SAWDN: Sawtooth Wave
SQR: Square wave
SAWDN
Frequency of the LFO modula-
tion
Modulation depth of the LFO
Volume balance between the
direct sound (DRY) and the ef-
fect sound (WET)
Parameter Value Description
Low Band -60– +4 These specify each level of the Low, Mid,
Level dB and High frequency ranges.
At -60 dB, the sound becomes inaudible. 0
Mid Band
dB is equivalent to the input level of the
Level
sound.
Hi Band
Level
AP Low Sw OFF, ON Turns the Anti-Phase function on and off
for the Low frequency ranges.
When turned on, the counter-channel of
stereo sound is inverted and added to the
signal.
AP Low 0–127 Adjusts the level settings for the Low fre-
Level quency ranges.
Adjusting this level for certain frequencies
allows you to lend emphasis to specific
parts. (This is effective only for stereo
source.)
AP Mid Sw OFF, ON Settings of the Anti-Phase function for the
Middle frequency ranges
AP Mid 0–127
The parameters are the same as for the
Level
Low frequency ranges.
Filter Type Type of filter
THRU: no filter is used
LPF: Passes frequencies below the Cutoff.
BPF: Passes frequencies near the Cutoff.
HPF: Passes frequencies above the Cutoff.
NOTCH: Passes frequencies other than those near the
Cutoff.
Level
LPF
Level
BPF
Filter Slope -12, -24 Filter's attenuation slope
dB/O -24 dB per octave: steep
-12 dB per octave: gentle
Filter Cut- 0–127 Cutoff frequency of the filter
off The closer to zero it is set, the lower the
cutoff frequency becomes; set it closer to
127, and the cutoff frequency becomes
higher.
Filter Reso- 0–127 Resonance level of the filter
nance Raising the setting increases resonance
near the cutoff frequency, giving the
sound a special characteristic.
Filter Gain 0– +24 Compensates for the volume dropped in
dB the cut frequency range with some filters.
The level of compensation increases as the
value is increased, and raise the volume.
LowBoost -15– +15 Increasing this value gives you a heavier
Level dB low end.
* Depending on the Isolator and filter set-
tings this effect may be hard to distin-
guish.
Level
Freq.
Freq.
HPF
Level
Freq. Freq.
NOTCH