Precise Filter Design [DSP Tips & Tricks]

  • G. Berchin
  • Published 2007 in IEEE Signal Processing Magazine


In this article, we describe an obscure but simple and powerful method for designing a digital filter that approximates an arbitrary magnitude and phase response. Called frequency-domain least-squares (FDLS) method, it can create a filter roughly comparable in computational burden and latency to that created by the bilinear transform method, with fidelity approaching that of fast convolution. In addition, the FDLS method can be applied to a wide variety of other system identification tasks

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Cite this paper

@article{Berchin2007PreciseFD, title={Precise Filter Design [DSP Tips & Tricks]}, author={G. Berchin}, journal={IEEE Signal Processing Magazine}, year={2007}, volume={24}, pages={137-139} }