Error feedback in normal realization of recursive digital filters
C. Barnes · IEEE Transactions on Circuits and Systems · 1981
Normal realizations of narrow-band low-pass filters are shown to be suitable for the use of error feedback to reduce roundoff noise. The use of a simple error feedback structure at each summing node, requiring only a single storage register and no multipliers, reduces the high roundoff noise that is normally associated with narrow-band low-pass filters.