UNO Synth PRO X
3 – Front Panel Interface
14
3.4 – Filters
The UNO Synth PRO X is equipped with 2 filters for its voice that
can be routed either in series or parallel, and are shown in the
following:
Filter 1 is a 2-pole OTA-based filter with HP and LP modes.
Filter 2 is a selectable 2 or 4-Pole LP based on the SSI2164 chip.
CUTOFF 1 & 2
Adjusts the cutoff frequency of the filter between 20 Hz and 21
kHz.
RES 1 & 2 (Resonance)
Adjusts the resonance of the filter from 0 to 127. Filter 2 will begin
to self-oscillate at around value 210.
ENV AMT 1 & 2 (Envelope Amount to filter)
This is a fixed modulation route that determines how much the
Filter Envelope modulates the cutoff frequencies with a range of
-63 to 64.
TRACKING
This determines to what extent the cutoff frequency will track the keyboard. The higher the value is set, the more
the filter will open over the upper range of the keyboard and close in the lower ranges of the keyboard. The
control range is +/- 200%.
LINK (link Cutoff only)
When ON, operating the FILTER 1 CUTOFF will uniformly change both of their cutoff frequencies. The relative
offset between the cutoff frequency settings of the Filters is preserved as the linked value is increased or
decreased. This relative offset can be modified moving the FILTER 2 CUTOFF.
+RES (link Cutoff + Resonance)
When ON, operating the FILTER 1 RESONANCE will uniformly change both of their Resonance frequencies. The
relative offset between the cutoff frequency settings of the filters is preserved as the linked value is increased or
decreased. This relative offset can be modified moving the FILTER 2 RESONANCE.
LPF / HPF Toggle
Toggles between the Filter 1 modes.
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