Efficient tunable IIR and allpass filter structures
M. Makundi, T.I. Laakso, Vesa Välimäki · Electronics Letters · 2001
A new recursive filter structure is proposed which can be controlled on-line using a single parameter. The structure can be used for interpolation in timing synchronisation of digital communications receivers. The technique is illustrated with an example of the implementation of a tunable fractional delay allpass filter using the Thiran design technique.