This paper describes the creation of dynamic filters for listener position adaptive personal audio reproduction with loudspeaker arrays. The proposed filters allow for the delivery of personalised audio programs to a pair of listeners. The filters are adapted in real-time to the listeners' position, which can be estimated by a listener-tracking device. This is obtained by expressing the impulse response of each filter as a network of variable gain-delay elements that are updated so that the filters adjust the reproduced beam pattern to the listeners' position, assuming that each loudspeaker behaves according to a point-source radiation model. This work introduces the formulation of the filters and presents numerical simulations of the system performance.
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