Arturia 2.6 manual Low-shell filter

Low-shell filter

The high-shell filter increases or decreases the frequencies above the cut-off frequency (with the action of the gain knob).

High-shell filter

A second setting completes the cut-off frequency: the resonance. You will also find it under the terms “emphasis” or “Q” – as a “filtering quality factor”.

The resonance amplifies the frequencies close to the cut-off frequency; the other remaining frequencies are unchanged (before the cut-off frequency) or diminished (after the cut-off frequency).

You can increase the rate of resonance by simply turning the resonance knob.

When you increase the resonance, the filter becomes more selective, the cut-off frequency is amplified, and the sound begins to “whistle”.

With a high level of resonance, the filter will begin to oscillate on its own, producing a sound close to a sinusoidal waveform. At this stage, the use of a key follow is very important as you can create a melody by tuning the filter cut-off frequency with the frequency of the oscillators.

ARTURIA – MOOG MODULAR V 2.6 – USER’S MANUAL 105