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Application Notes
60
Symmetrical Q
This class of equaliser has the same curves in boost as the constant-Q type, but then has cut
responses that are symmetrical with the boost ones. In other words, the bandwidth in cut is defined
not according to our usual definition of Q (see constant-Q above) but as “the point were the signal is
cut by 3dB less than the maximum cut”. Most equalisers described by their manufacturers as
“Constant Q” in fact produce symmetrical responses.