Patent ID: 8218774
Filing Date: 2012-07-10
Classification: H04L,H04M,H04S

Abstract:
1. An apparatus for processing an input signal comprising a plurality of subsignals associated to discrete transmitters or discrete receivers, wherein the discrete transmitters or receivers are disposed at predetermined geometrical positions with regard to a room, comprising: a provider for providing a plurality of wave-field components from the input signal comprising the plurality of sub-signals, wherein the provider is configured to derive the plurality of wave-field components from the input signal by a wave-field decomposition based on orthogonal wave-field base functions and the predetermined geometrical positions using a transform causing an orthogonalization of the spatial and temporal components, wherein the wave-field decomposition is such that a superposition of the plurality of wave-field components results in a composite wave-field being propagatable in the room; and a plurality of single filters, wherein each single filter of the plurality of single filters is associated to a wave-field component of the plurality of wave-field components, wherein a filtering of the wave field components separately from each other is obtained, wherein each wave field component is filtered by the single filter associated with the respective wave field component, and wherein each single filter of the plurality of single filters is formed to influence the associated wave-field component such that with regard to the plurality of single filters, a plurality of filtered wave-field components representing a processed input signal is obtained as an output, wherein the number of wave field components is merely limited by a spatial sampling theorem rather than by a number of the discrete receivers or a number of the discrete transmitters.