Extension of the aggregate beamformer to filter-and-sum beamforming

Authors

  • David I. Havelock National Research Council, 1200 Montreal Rd., Ottawa, Ont. K1A 0R6

Keywords:

Acoustic noise, Computational methods, Data reduction, FIR filters, Linearization, Optimization, Signal to noise ratio, Wave propagation, Beamformers, Delay and sum (D&S) beamforming, Filter-and sum (F&S) beamforming, Stochastic filters

Abstract

The extension of delay and sum aggregate beamformer to filter and sum beamforming is discussed. It is observed that the aggregate beamformer differs from conventional beamforming in which it converts off-beam signals to noise that can be filtered. It is also observed that the conventional and the aggregate F&S beamformers are equivalent in the mean. The results shows that extending the D&S aggregate beamforming to F&S does not incur additional computation and the residual noise is increased.

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Published

2004-09-01

How to Cite

1.
Havelock DI. Extension of the aggregate beamformer to filter-and-sum beamforming. Canadian Acoustics [Internet]. 2004 Sep. 1 [cited 2021 Oct. 18];32(3):158-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1676

Issue

Section

Proceedings of the Acoustics Week in Canada