On the design of variable fractional delay filters with Laguerre and Kautz filters

In this paper, we generalize the well-known variable fractional delay filter structure of Farrow to include Laguerre and Kautz filters. We also show how one can incorporate amplitude response shaping into the optimization design formulation, and extend the range of variable delay to beyond the usual one sampling period. Some salient features of the new structures are demonstrated through three design examples based on the simple least squares criterion.