13 RD-8 MKII User Manual
10. Analog Filter
The Analog Filter section works on selected sounds routed via an audio bus fed
from the Wave Designer circuit.
The CUTOFF control sets the frequency where the lter is applied. The lter cut o
can be programmed and automated (when the ON button is ashing, automation
is active).
When the HPF (High Pass Filter) button is engaged the lter cuts the the low
frequency cuto point as you turn the control CW. When the HPF button is not
engaged, the CUTOFF knob defaults to a lo-pass lter (LPF), which gradually cuts
the high frequencies as you turn the control CCW.
Press the ON button to activate the lter circuit.
The RESONANCE control adjusts the resonance of the lter. Turning CW adds a
peak at the cuto frequency that accents the surrounding frequencies.
The lter CUTOFF control setting can be recorded as automation. After
programming a pattern, add the voice or voices you wish to be processed by the
Analog Filter and Wave Designer bus as described earlier in this manual. Next,
while the pattern is playing and in Record Mode, rotate the CUTOFF knob and
listen to the results. Once you are happy with your lter sweep exit Record Mode.
Next time you play the pattern, the recorded lter sweep will play back.
Live Filter Mode can be toggled on and o, and this toggling action gives you
either manual control of the lter frequency or automated Filter Mode, which
uses the stored lter automation data. The live Filter Mode can be toggled on and
o by holding the TAP/HOLD button and pressing the lter ON button to activate
dierent states:
• • Flashing lter ON button= Filter plays stored automation data
• • Solid lter ON button = Filter in live control mode
At any time, you can drop into Record Mode and adjust the lter settings that will
be stored with the current pattern, as long as the lter settings are set to Pattern
(see SETTINGS 11.5 below).
It is also possible to manually program the lter per step or to edit a recorded
lter sweep.
1. Press SETTINGS.
2. Press FILTER (STEP BUTTON 6).
3. Pressing dierent step keys (1-64) will display the current lter position from
0, turn the DATA control counter clockwise (CCW) to 255 turn clockwise (CW).
Depending on which lter setting is in use, HPF or LPF, the lter will be fully
open or closed. Up to 64 steps can be programmed using the <</>> keys in
the LENGTH section to navigate step position.
4. Press SETTINGS twice to exit.
5. Save PATTERN.
NOTE: Filter automation will now carry across when extending / copying lengths
of patterns.
- turning the Cut O control in play mode will end playing the automated
Filter mode.
- turning the Cut O knob in record with Filter on will start recording the
automated Filter.
Filter section to be processed.
The SIG LED shows that a signal is present in the Analog Filter/Wave Designer bus.
The SEND button activates the Wave Designer circuit.
How to assign voices to the FX bus:
1. Press SEND in the FX sections (ashes orange).
2. Use SELECT to assign which voices go to the bus (solid pink LED indicates
voice sent to the FX bus).
3. Press SEND in the FX section to exit. SEND button will be solid white to show
voices are assigned to the FX bus.
TIP: Hold TAP/HOLD while pressing SEND to clear all voice from the FX bus.
The diagram below shows the audio routing of the voices as they pass through
the RD-8 MKII. Only one voice is shown in this example, but the same process
applies to all voices.