Matrix approach for the coefficients of maximally flat FIR filter transfer functions expressed in powers of cos w
L.R. Rajagopal, S. C. Dutta Roy · Electronics Letters · 1987
A matrix approach is proposed for determining the coefficients of maximally flat FIR filter transfer functions expressed in powers of cos w. It is shown that the transformation matrix is a product of the well known Q-matrix and a diagonal matrix. Also, a property relating two Q-matrices of successive orders, N and N + 1, is pointed out.