7.7 Filters
Deluge has a high-pass and low-pass filter. Each is configurable with the mode type and has a morph feature. Filter routing can also configurable.
HPF - HIGH-PASS FILTER
Allows higher frequencies to pass through the filter and cuts off lower frequencies.
LPF - LOW-PASS FILTER
Allows lower frequencies to pass through the filter and cuts off higher frequencies. Deluge filters are 2-pole and 4-pole and 4-pole analog drive with saturation only on the LPF. Poles refer to how ‘steep’ or aggressive the cutoff curve is. This is measured in dB per octave.
CUTOFF & RESONANCE
The two parameters common to both the filters provide control over the cutoff frequency and also the resonance (emphasis at the cutoff point).
MODE: The LPF has 2 Ladder filters, SVF Notch and SVF Bandpass. The HPF contains a HP Ladder filter, SVF Notch and SVF Bandpass. The State Variable Filters have significantly less distortion than the ladder filters.
MORPH: Adjusts smoothly from a setting of 0 at lowpass through bandpass/ notch to highpass at a maximum of 50. This is inverted in the HPF slot so that at 0 is highpass and at 50 it is lowpassed. Morph adds drive to the LP Ladder filters and FM to the HP Ladder. Morph is modulatable.
FILTER ROUTE: Only accessible via the SOUND menu. Adjusts the filter order from HPF to LPF, LPF to HPF, or Filters operate in Parallel.