Patent ID: 8213621

Claim:
A method for controlling an acoustic field reproduction unit comprising a plurality of reproduction elements having any position and direction using a plurality of sound data input signals each associated with any predetermined general reproduction direction defined relative to a given point in space, comprising: determining via a computer parameters from a multi-channel audio signal of the sound data input signals describing the reproduction direction of each channel of the multi-channel audio signal, determining via a computer at least spatial characteristics of the reproduction unit, the spatial characteristics comprising at least the direction of each reproduction element having any position and direction in the three spatial dimensions relative to the given point, wherein the determined directions of the reproduction elements having any position and direction are different from the reproduction directions of the multi-channel audio signal, determining via a computer a spatial adaptation matrix using the determined directions of the reproduction elements and the parameters describing the reproduction directions, wherein the spatial adaptation matrix is determined such that controlling the reproduction elements with the controlling signals reproduces, in a region comprising the given point, the acoustic field that would have been obtained by controlling, with the multi-channel audio signal, ideal reproduction elements which would exactly comply with the reproduction directions of the multi-channel audio signal.