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Chapter 11: Graphic Equaliser (GEQ)
full
Figure 8: Symmetrical-Q equaliser 'narrow' mode full boost and cut
The strength of Proportional-Q equalisation is that the EQ bands are wider at lower
amounts of boost and cut, and become narrower as greater amounts are applied, giving
the optimum balance of smoothness and accuracy over the entire fader travel.
Extensive listening tests were carried out during the development of the GEQ to obtain
the optimum response, resulting in a very musical sounding equaliser that maintains
the highest level of accuracy without ever sounding harsh.
Figure 9 and Figure 10 show the GEQ response for both 2dB and full scale boost and
cut; note that the smooth combining of the bands for small amounts of boost and cut is
very similar to that of the Symmetrical-Q equaliser in its 'wide' mode, while as more
boost or cut is applied, the response becomes sharper, giving a much more precise
control of problem frequencies.
Figure 9: GEQ response ±2dB boost and cut
XL8 Control Centre
Operator Manual
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