Transform domain IIR filtering

Abstract

The paper provides a generalization on the concept of the transform domain filtering (TDF). TDF is block-based filtering, or vector-filtering, applied to transform domain data to get the effect of desired time domain filtering. The result is transform domain IIR filtering (IIR-TDF) and it takes in the existing TDF, or FIR-TDF, as its special case. The resulting structures are two-fold-direct I form and direct II form-and are both block-filtering structures.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>