Erica Synths LXR Eurorack Drum Module (28 HP) - Manual (Page 23)

6.2.3. Drive
Controls how 'hot' the filter is driven. More drive yields in more distortion. In the normal operating
range, when drive is set to 0, the filter is quite clean and nearly linear. With higher input levels/drive
settings, a soft clipper as well as the slew rate limit of the integrators comes into effect. Low
settings will only affect the resonance peaks, higher settings will distort the whole signal. Since the
soft clipper is scaling down excessive peaks in the signal, the audible resonance is reduced with
higher drive settings.
6.2.4. Filter types
There are several different filter types available, each with it's own characteristics. Let's have a
closer look at each one of them. The filters are plotted with 3 different resonance settings. No
resonance, medium and high. The cut off frequency is the same in every plot and marked by the
vertical dashed line. The x axis shows the frequency from 0Hz to 22kHz, the y axis shows the gain
for the specific frequency - Both on a logarithmic scale.
Lowpass
The lowpass filter removes high frequencies from the signal. All frequencies above the cut off
frequency are reduced gradually.
LXR Owners Manual - 23 -