Note on the Design of an Equiripple DC-Notch FIR Filter
Pavel Zahradník, Miroslav Vlek · IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing · 2007
An extremely robust analytical procedure for the effective evaluation of the impulse response of a highly selective optimal equiripple dc-notch finite-impulse response (FIR) filter is presented. The dc-notch filter is optimal in the Chebyshev sense. The computational superiority of the presented procedure over the standard approach is emphasized.