8-Pole Filter Section - Native Instruments Skanner User Manual

Overview of SKANNER Ensemble
Effects Section
View B — Effects section
5.6.1

8-Pole Filter Section

The 8-Pole Filter effect structure comprises four 4-pole filters: each stereo channel has a 4-
pole low pass filter and a 4-pole high pass filter. The cutoff frequencies of the low pass and
high pass filters are offset from a reference cutoff frequency. This offset is controlled by the
GAP parameter. Since the two filters are running in parallel and their output signals are mixed,
the result of a positive GAP value is a band rejection. With a negative GAP value the pass
bands of both filters are overlapping so that all frequencies can pass and the resonances em­
phasize the cutoff frequencies. The difference between the reference cutoff frequencies of the
two channels is controlled by the L / R parameter. The CENTER parameter is used to set the
mean value of the cutoff frequencies of the two channels.
8-Pole Filter Parameters
View B — 8-Pole Filter — Effects section
[1] CENTER: Shifts the mean cutoff frequency of both 4-pole filters on both channels up or
down [Hz].
[2] L / R: Sets the difference between the cutoff frequencies of the left and of the right chan­
nel.
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