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First-order Superdirectional Acoustic Zooming in the Presence of Directional Interferences
Previously proposed superdirective acoustic zooming techniques mainly focus on controlling the directivity-factor of the constructed beampattern as a function of the zoom-parameter. This means that thesezooming techniques are only consistent in the case of spherically isotropic interferences. In practical situations however, often directional interferences (mainly coming from a single direction) are present. To have a consistent behaviour of the acoustic zooming, we willpropose a new zooming technique that is based on a novel beampattern construction. The beampattern is constructed in such a way that for every angle, the response is monotonically increasing/decreasing in a consistent way with the zooming-parameter.
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