 We form the cepstrum formula_362 of the autocorrelation function is formed and multiplied by a non symmetric half-plane window formula_363 to obtain the cepstrum,

formula_364

The subscript "mp" denotes that this cepstrum corresponds to a minimum phase sequence formula_365.If the designed filter is stable, its denominator coefficient array formula_366 is a minimum-phase sequence with non symmetric half-plane support.In this case, formula_366 is equal to formula_368; otherwise it is not.