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Knob [2]
Reso1 (Filter1 Resonance) [000...127]
Sets the resonance of the filter. This will
emphasize the overtones near the cutoff
frequency specified by “Cutoff1,” adding
a distinctive character to the sound. In-
creasing this value will increase the effect.
Since movement of the “Cutoff1” knob will
affect the overtones that are boosted by
resonance, it is best to adjust “Cutoff1” and
“Reso1” in conjunction with each other
(Figure 8-1).
Depending on the cutoff frequency or
the input audio, increasing this value
may cause distortion.
Knob [3]
FiltBal1 (Filter1 Balance)
[LPF24…LPF12…HPF…BPF…THRU]
Selects the filter type. Intermediate settings
will produce a response that is between the
two filter types.
LPF12 (–12dB/oct), LPF24 (–24dB/oct):
Low Pass Filter (p.33 “LFP:”).
HPF (-12dB/oct): High Pass Filter (p.33
“HFP:”).
BPF (-12dB/oct): Band Pass Filter (p.33
“BFP:”).
THRU: The sound will output directly,
without passing through the filter.
Knob [1]
Cutoff1 (Filter1 Cutoff) [000...127]
Sets the cutoff frequency.
Increasing this value will raise the cutoff
frequency.
“Cutoff1” can be varied by time-vari-
ant change produced by EG1, by key-
board playing dynamics (velocity),
and by note location (keyboard track-
ing).
If the “Cutoff1” value is set too low,
the volume may be extremely low, or
you may hear no sound at all.
8. FILTER1-A
The filter section changes the tonal character of the oscillators by passing only the desired portion of the sound - either above (Low Pass), below
(High-Pass), or centered on (Band Pass) the cutoff frequency. The R3 has two filters (filter 1 and filter 2), and you can change their routing to
create more complex filter sounds. The filter 1 parameters are set in the 8. Filt1-A page and 9. Filt1-B page.
Figure 8-1: Filter1 Resonance
LPF
HPF
BPF
The effect of resonance
Low resonance value
High resonance value
Knob [4]
Routing1 [Single, Serial, Parallel, Indiv]
Specifies the routing (connection) between
filter 1 and filter 2.
Single: Only filter 1 is used.
Serial: Filter 1 and filter 2 are connected in
series (Figure 8-2).
Parallel: Filter 1 and filter 2 are connected
in parallel (Figure 8-3).
Indiv: Filter 1 is applied to oscillator 1, and
filter 2 is applied to oscillator 2 and noise
(Figure 8-4).
Figure 8-2: Serial
OSC1
Filter1
OSC2
Noise
Filter2
Figure 8-3: Parallel
OSC1
Filter1
OSC2
Noise
Filter2
Figure 8-4: Indiv
OSC1
Filter1
OSC2
Noise
Filter2
38


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