Consider a stable LTI system with impulse response h[n] and all-pole system function
Such all-pole systems arise in linear-predictive analysis. It is of interest to compute the complex cepstrum directly from the coefficients of H(z).
(a) Determine ˆh[0].
(b) Show that
With the relations in parts (a) and (b), the complex cepstrum can be computed without phase unwrapping and without solving for the roots of the denominator of H(z).
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