User guide

Page 48 AudioCore Version 8.40
AudioCore Version 8.40AudioCore Version 8.40
AudioCore Version 8.40
Enhanced Filter Set Usage
Producing steeper crossover roll-offs than 48dB
Using a combination of the high or low pass filters and the elliptical parametric filters, much steeper crossover slopes can
be realised than ever before. The following example shows how to produce a low pass filter with a roll-off in excess of
70dB/Octave. This technique can be used with high pass crossover filters as well.
Select a 48dB low pass filter,
and set the frequency as
required. Next, turn one of
the parametric sections on
that channel into a low pass
elliptical filter, and set its
frequency to exactly the
same as the low pass. Make
sure the filter is active, and
the response should be as
shown below.
To demonstrate the
extended roll-off this has not
introduced, outputs 1 and 2
have been set as standard
24dB and 48dB Linkwitz-
Riley crossovers
respectively.
The “Global View” clearly shows how much steeper the roll-off is on output 3.