Huawei Technologies Co., Limited

University of Southampton

Ferdinando Olivieri

Philip Arthur Nelson

Filippo Fazi

Simone Fontana

The disclosure relates to an apparatus for generating a sound field on the basis of an input audio signal. The apparatus comprises a plurality of transducers, wherein each transducer is configured to be driven by a transducer driving signal qof the respective transducer; a plurality of filters configured to generate for each transducer the transducer driving signal qof the respective transducer; and a control unit configured to provide or receive a first transducer driving signal vector qof dimension L such that the gradient of J(q;&#x3c8;) with respect to q is zero in (q;&#x3c8;), the control unit is further configured to provide a second transducer driving signal vector {tilde over (q)} of dimension L such that the gradient of the cost function J(q;&#x3c8;) with respect to q is [approximately] zero in ({tilde over (q)}; {tilde over (&#x3c8;)}), the control unit is configured to provide the second transducer driving signal vector {tilde over (q)}.

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Southampton, United Kingdom

Ferdinando Olivieri