A Uniform Rational Approximation Program with Applications to Recursive Filter Design
G. D. Taylor, E. H. Kaufman · Defense Technical Information Center (DTIC) · 1975
A general algorithm which uses linear programming to compute rational approximations is discussed. This algorithm allows independent upper and lower constraints to be imposed on the frequency response of a recursive digital filter. Experimental results have been excellent. A FORTRAN listing of this program is available.