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. 2016 Oct 11;16(10):1671. doi: 10.3390/s16101671

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Cluster (col. 1), theoretical (col. 2) and measured beampatterns (col. 3) for 8 kHz, pointed to the broadside. Cluster geometries: row (a); square (b); and star (c).

Cluster (col. 1), theoretical (col. 2) and measured beampatterns (col. 3) for 8 kHz, pointed to the broadside. Cluster geometries: row (a); square (b); and star (c).