Filter topology for easy use of poles and zeros (ZDF) (in: DSP and Plugin Devel…)

By: hugoderwolf
13 Aug 08:48

If you replace the digital delays with analog integrators you get a generic DF2T filter structure in analog domain. And of course you can then replace those with trapezoidal integrators again and get a digital filter structure. When you then solve the resulting system linearly and reduce it, you’ll probably end up exactly where you started. But when not reducing, you’ll probably have some benefits when modulating coefficients.

BTW, where do the coefficients come from? For a standard EQ thingy, …

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