Maximally flat low-pass digital differentiator
Ivan Selesnick · IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing · 2002
This paper describes the design of type III and type IV linear-phase finite-impulse response (FIR) low-pass digital differentiators according to the maximally flat criterion. We introduce a two-term recursive formula that enables the simple stable computation of the impulse response coefficients. The same recursive formula is valid for both Type III and Type IV solutions.