Apparatus and method for driving an array of loudspeakers
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United States of America Patent
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May 7, 2019
Grant Date -
Jan 25, 2018
app pub date -
Oct 2, 2017
filing date -
Apr 8, 2015
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Abstract
A local wave field synthesis apparatus, which includes a determination module for determining desired sound pressures and desired particle velocity vectors at a plurality of control points, a computation module for computing sound pressures and particle velocity vectors at the plurality of control points based on a set of filter parameters, an optimization module for computing an optimum set of filter parameters by jointly optimizing computed sound pressures towards the desired sound pressures and computed particle velocity vectors towards the desired particle velocity vectors, and a generator module for generating the drive signals based on the optimum set of filter parameters, wherein the plurality of control points are located on one or more contours around the one or more audio zones.
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