![]() ![]() ![]() While other filter types can also be used, most are not as well behaved or as flexible as the state-variable topology. Parametric equalisers are often very complex, because to enable variable frequency and Q requires a state-variable filter. ![]() It's not perfect (I don't know of any circuit that is), but it is fairly simple to implement and performs well. The main purpose of this article is to introduce the reader to a flexible equaliser circuit that can be used for hi-fi, mixing consoles, instrument amplifiers (especially bass guitar) or anywhere else that a simple and predictable 'parametric' equaliser is needed. ![]()
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