Arturia MiniBrute User's Manual 25 6 Legal notes
In high-pass mode, partials above the cutoff frequency remain unchanged, while
the partials below the cutoff are attenuated.
In notch mode (or rejection filter) the cutoff frequency becomes a band’s center
frequency; partials within this band are attenuated, while partials above and
below this band remain unchanged.
The cutoff frequency doesn’t have to be static; controlling it with other devices like
a keyboard (keyboard tracking), or LFO, envelope generator, or other controllers,
creates dynamically-changing, interesting timbres.
4.1.3.3 Resonance or emphasis
Resonance is a filter’s ability to amplify or emphasize partials that are close to the
cutoff frequency, thus creating a peak in the spectral response. This parameter
can be increased up to a point where the filters no longer acts like a mere filter,
but starts to oscillate on its own.
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