DESIGN OF LINEAR-PHASE IIR FILTERS FROM FIR SPECIFICATIONS

A simple method is presented for the characterization of a stable IIR filter matching a finite portion of the impulse response and autocorre lation coefficients of a given FIR filter. It is shown that the proble m is reduced to the solution of a set of linear equations derived usin g the impulse response and autocorrelation data. The method is charact erized by its computational simplicity and is illustrated by some exam ples to show its superior performance when compared to the existing me thods.