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18.05.2006 Angelo Farina
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Kirkeby’s regularization
§During the computation of the inverse filter, usually operated in the frequency domain, one usually finds expressions requiring to compute a ratio between complex spectra:
§H=A/D
§Computing the reciprocal of the denominator D is generally not trivial, as the inverse of a complex, mixed-phase signal is generally unstable.
§The Nelson/Kirkeby regularization method is usually employed for this task: