LinPlug MorphoX - Manual (Page 17)

lower notes have a lower cutoff frequency. When the dial is moved to the
left the effect of filter tracking is just opposite as described.
The Depth dial is used to set the degree to which the filter's envelope
effects the Cutoff. Setting Depth to -100% (i.e. turning the dial completely
counter-clockwise) means that the envelope has full negative effect on the
filter. Adjusting the dial to the middle position means that it has no effect on
the filter. Turning the dial completely clockwise means that the filter is
modulated by the envelope's full range (100%).
The negative envelope depth can be used for special effects, in example
for opening the Filter when a note is released (this is impossible with a non-
inverted ADSR envelope).
Reso (resonance) is used to set the amount of emphasis around the cutoff
frequency, up to self resonance, thus adding something to the signal.
Higher settings create a more pronounced peak in the signal while lower
settings produce a flatter response.
Below the Filter you find the Filter Envelope, which is a standard ADSR
envelope, for more details see the chapter ADSR envelopes right after the
Filter Mix section.
Filter Mix
To the right of the filter there on three dials to mix the different outputs of
the filter. Each dial controls the volume of low pass, band pass and high
pass respectively.
LP (lowpass): This filter type allows frequencies that fall below the cutoff
frequency to pass.
HP (high-pass): This filter type allows frequencies above the cutoff
frequency to pass.
BP (bandpass): The frequency band directly surrounding the cutoff
frequency is allowed to pass. All other frequencies are cut.
By mixing LP and HP one can also create a band reject filter (BR or Notch
filter).
MorphoX user manual 1.1.0 page 17