Patent ID: 6694033
Filing Date: 2004-02-17
Classification: H04S

Abstract:
A method of generating a sound field from an array of loudspeakers, the array defining a listening space wherein the outputs of the loudspeakers combine to give a spatial perception of a virtual sound source, the method comprising the generation, for each loudspeaker in the array, of a respective output component Pn for controlling the output of the respective loudspeaker, the output being derived from data carried in an input signal, the data comprising a sum reference signal, and directional sound components representing the sound component in different directions as produced by the virtual sound source, wherein the method comprises steps of recognizing for each loudspeaker, whether the respective component Pn is changing in phase or antiphase to the sum reference signal, modifying said signal if it is in antiphase, and feeding the resulting modified components to the respective loudspeakers.