Efficient Linear-Phase Fir, Maximally Flat Error Approximations For The Amplitude Response /1/ω~γ/, γ=1,2,3,…, And A Versatile Realization

摘要

In this paper, designs of linear-phase finite impulse response (FIR) filters ap- proximating the ideal frequency response H(ω,γ) Δ/ω~γ/γ=1,2,3,…,by using maximally flat error criteria have been proposed. Exact weights required for the realizations have been derived and are shown to be independent of the filter order N. The suggested designs are particularly suitable for operation in the midband frequency range of 0.10π-0.90π radians.