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

Auteurs-es

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

Mots-clés :

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

Résumé

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.

Fichiers supplémentaires

Publié-e

2004-09-01

Comment citer

1.
Havelock DI. Extension of the aggregate beamformer to filter-and-sum beamforming. Canadian Acoustics [Internet]. 1 sept. 2004 [cité 9 mai 2026];32(3):158-9. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1676

Numéro

Vol. 32 No. 3 (2004)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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