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Closed-form approach to design of all-pass digital filters using cepstral coefficients

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1 Author(s)
Kidambi, S.S. ; Analog Devices Inc., Wilmington, MA, USA

A simple method for the design of all-pass digital filters is described. In this method, given a desired group delay, the cepstral coefficients corresponding to the denominator of a stable all-pass filter are determined using a least-squares approach. The coefficients of the all-pass filter are then obtained from the cepstral coefficients using a recursive relation.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 12 )