A State-Space filter structure is presented, along with simplified equations for mapping the coefficients of arbitrary biquad filter coefficients to the State-Space structure. This procedure allows low noise implementation of an arbitrary second-order filter transfer function. A block-processing variant of the State-Space structure is described, with the added benefit that greater efficiency can be achieved on some classes of modern pipelined DSP processors.
Affiliation: Dolby Laboratories, Sydney, NSW, Australia
AES Convention: 127 (October 2009) Paper Number: 7922
Publication Date: October 1, 2009
Subject: Signal Processing
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