On this page, you select the type of parameter that you want to train on.
The Parameter Selection set-up window
The Gain parameter is only selectable when either Shelving or Parametric Equalizers are selected in the previous step, because High/Low-pass, Bandpass, and Bandstop filters do not have a Gain parameter.
For High/Low-pass Filters, Q controls the level of the selected frequency. For example, a HPF at 100 Hz, Q 0.7 results in 100 Hz being attenuated by 3 dB.
For Shelving Filters, Q controls the bandwidth of the transition band. For Parametric Equalizers, Bandpass, and Bandstop filters, Q controls the bandwidth of the filter.