User Manual

Page 36 Duende Native User Guide
Constant Q Asymmetrical Reverse (CQ Asym R)
E
xactly like above but with mirrored boost and cut characteristics.
Constant Q Invert (CQ Invers)
Both boost and cut characteristics are both defined according to 0 – 3dB
formula.
0 – 3dB
Constant Q New (CQ New)
Defined Q is always perfectly maintained independent of bell gain (also
below 6dB). In terms of P – 3dB definition of this equaliser can be classified
as proportional.
P/2
Parallel
Note this is accessed via the Parallel switch, not the drop-down menu.
Recreates the passive LC parallel equaliser with all its advantages (sound)
and disadvantages (band interaction, asymmetry). As found in graphic
equalisers.
3dB boost, 0 – 3dB (x2) cut
Shelving Bands
Low and High shelves
Q value is used to control overshoot characteristic. On the left is the Low
shelf filter with a low Q value, on the right the High shelf filter exhibits
overshoot with a large Q value.
Note that there are no alternative shapes for shelving bands
Filter Shapes
Critical
‘Critical Damped’ filters simulate a chain of passive analogue RC (for high-
cut) and CR (for low-cut) stages fixing a behaviour similar to a series of RC
elements in vintage analogue equipment.
Bessel
Linear phase behaviour leads to no overshoot or ringing resulting from a
sudden transition between signal levels. The drawback is a sluggish roll-off
rate.