METHOD FOR CREATING AN AUDIO ENVIRONMENT HAVING N SPEAKERS

摘要

The invention relates to a method for creating an audio environment having N speakers HPi,i=1...N fed by N signals Si,i=1...N generated from M theoretical signals STj,j=1...M provided to feed M theoretical speakers HPTj, j=1 M, wherein: position information is determined relating to the N speakers HPi,i=1...N and a listening point, the two theoretical speakers HPTj and HPTJ+1 which would be angularly closest to a speaker HPi are identified, the signal Si is determined according to the following equation: Si = Gi [STj [GpijGeij )+ STj+1(Gpi(j+1)Gei(j+1)]e-i?ti in which, Gpij and Gpi(j+1) are panning gains determined on the basis of the angular distances between the listening point, the speaker HPi and the theoretical speakers HPTj and HPTj+1, and which recreate the correct arrival directions of the theoretical signals STj and STj+1 at the speaker HPi; Geij and Gei(j+1) are balancing gains enabling the weighting of the theoretical signals STj, j=1...M to be re-balanced by reassigning equivalent weights to each theoretical signal STj, j=1...M; Gi and ti are a positioning gain and delay, respectively, which enable the speakers HPi,i=1...N to be virtually repositioned in terms of distance so that all of the sounds intended to simultaneously arrive at the listening point according to the encoding format actually arrive therein simultaneously, irrespective of the remoteness of the speakers HPi,i=1...N relative to the listening point.