Explicit formula for the coefficients of maximally flat nonrecursive digital filter transfer functions expressed in powers of cos w
B. C. Jinaga, S. C. Dutta Roy · Proceedings of the IEEE · 1985
An explicit formula for the coefficients of the transfer function of a maximally flat nonrecursive digital filter, expressed in powers of cos w, is derived by exploiting the properties of the Kaiser-Hamming [1] amplitude change function polynomial. Transfer functions expressed in this form are convenient for implementing variable cutoff filters [2].