Proel PRONET v.2.1 - Manual (Page 61)

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For 2nd-order All Pass filters and Resonant LP and HP filters the shape parameter can set only Q (quality
factor) as in analog filters.
This parameter is not available for Shelving filters.
Shape can be edited in the numeric edit box, can be scrolled by the spin buttons or by the up/down arrow
keys of your keyboard, or can be edited with mouse by a combination of left-click and wheel on the
frequency response window.
Slope
Controls the slope of variable shelving filters, for these filters the slope can vary from 6dB/oct to 12 dB/oct in
0.5dB steps.
The parameter is not available for other filter types.
Slope can be edited in the numeric edit box, can be scrolled by the spin buttons or by the up/down arrow
keys of your keyboard, or can be edited with mouse by a combination of left-click and wheel on the
frequency response window.
Type
This drop-down menu select the type of filter used and it is available only when the filter cell is bypassed.
Note that changing the filter type restores a default setup condition for many parameters of the filter cell.
Filter types available are: Parametric, Notch, High and Low Shelving 6dB/oct, High and Low Shelving
12dB/oct, High and Low variable slope Shelving, Resonant High Pass and Low Pass, Band Pass, 1st order All
pass, 2nd order All Pass.
Bypass
Checking this option bypasses the equalizer cell.
Default button
Pressing this button restores a default condition for the filter’s parameters, according with the selected type.