Patent ID: 7394904

Claim:
A method of controlling a reproduction unit for restoring an acoustic field so as to obtain a reproduced acoustic field of specific characteristics substantially independent of the intrinsic characteristics of reproduction of said unit, said reproduction unit comprising a plurality of reproduction elements, comprising: a step of establishing a finite number of coefficients corresponding to the decomposition of said acoustic field to be reproduced into a linear combination of spatio-temporal functions, so that the coefficients are representative of the distribution in time and in the three dimensions in space of said acoustic field to be reproduced; a step of determining reconstruction filters representative of said reproduction unit, comprising a substep of taking into account at least spatial characteristics of said reproduction unit, the spatial characteristics comprising the distance between the reproduction elements and a predetermined arbitrary center, and the angular position of the reproduction elements relative to the center; a step of determining at least one control signal for said elements of said reproduction unit, said at least one signal being obtained by the application, to said coefficients, of said reconstruction filters; and a step of delivering said at least one control signal, with a view to an application to said reproduction elements so as to generate said acoustic field reproduced by said reproduction unit.