ARTURIA – CS-80 V – USER MANUAL
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The high-pass filter
The band-pass filter (BPF) eliminates frequencies situated on either side of the
cut-off frequency. It is in fact the addition of a low-pass and a high–pass filter.
Use it to focus on a particular band of frequencies that you wish to emphasize.
This will make the sound more “pinched”. On the CS-80V, you obtain this type
of filtering by combining the actions of a high-pass filter and a low-pass filter
as there is technically speaking no separate band-pass filter.
The band-pass filter
A second setting to compliment the cut-off frequency: the resonance. You will also
find it called “Emphasis”, or even “Q” – for “Quality of filtering” – on many
synthesizers.
The resonance amplifies frequencies close to the cut-off frequency; the other
frequencies remaining are either unchanged (before the cut-off frequency) or
reduced (after the cut-off frequency).
On the CS-80V, you can increase the rate of resonance through the RES slider.
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 resonance level, the filter will begin to produce a sound close to a sine
waveform. At this stage, the use of a key follow is very important as you can create
