Low-sensitivity structure for 1-D and 2-D digital FIR filters

Abstract

A nonrecursive structure of 1-D and 2-D FIR lowpass and highpass digital filters is described in the paper. The magnitude sensitivity is small and zero sensitivity can be obtained at particular frequencies in the passbands. The structure is canonical in the sense of the number of multipliers. The reductions of the structure due to the symmetries of the impulse response are applicable as is usual with the linear phase systems.