Design of digital FIR filters with arbitrary notch frequencies using the Chebyshev function
J.J. Soltis, Bhumip Khasnabish, Majid Ahmadi · 2002
An analytical method for designing digital FIR filters is presented which equates the filter transfer function to a function of the nth order Chebyshev polynomial, c/sub n/(arg). By proper development of arg, a purely digital function, equiripple passband filters with user-specified notch frequencies can be designed. Examples are given to illustrate the utility of the technique.>