Arturia Minimoog V User Manual page 42

Spectrum of a noise signal proceed with a low-pass filter
A second setting to compliment the cut-off frequency: the resonance.
(you will also find it called «emphasis» or «Q» – for Quality of filtering)
The resonance amplifies frequencies close to the cut-off frequency. The other frequencies
remaining are either unchanged (below the cut-off frequency) or reduced (above the cut-
off frequency).
On the minimoog V, you can increase the rate of resonance through the «emphasis»
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 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 a
melody by tuning the cut-off frequency of the filter with the frequency of the oscillators.
The filter settings of the minimoog V
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ARTURIA – minimoog V – USER'S MANUAL