Allpass Arrays: Theory, Design, and Applications

Goodwin MM. Allpass Arrays: Theory, Design, and Applications. In: AES Convention 121. Audio Engineering Society; 2006. Paper 6909. Available from: https://aes.org/publications/elibrary-page/?id=13743

@inproceedings{Goodwin2006_13743,
  author = {Goodwin, Michael M.},
  title = {{Allpass Arrays: Theory, Design, and Applications}},
  booktitle = {AES Convention 121},
  note = {Paper 6909},
  year = {2006},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13743}
}

TY  - CPAPER
TI  - Allpass Arrays: Theory, Design, and Applications
AU  - Goodwin, Michael M.
T2  - AES Convention 121
M1  - Paper 6909
PY  - 2006
DA  - 2006/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13743
PB  - Audio Engineering Society
LA  - en
AB  - The realization of non-directional linear electroacoustic arrays using Bessel weighting has been described in the literature. In this paper, we discuss generalized allpass arrays; since the far-field response of a uniformly spaced linear array is specified by a mapping of the DTFT of the array weights, any FIR approximation of an allpass filter gives weights which result in a nearly uniform array response as achieved by Bessel arrays. We explain the fundamental array theory and present a straightforward method for the design of arbitrary-order allpass arrays. We then discuss applications of allpass arrays in crossover-filtered configurations and in the implementation of efficient frequency-invariant beamformers.
ER  -