Patent ID: 6628787
Filing Date: 2003-09-30
Classification: H04S

Abstract:
An apparatus for converting a spatial soundfield signal component set into a set of loudspeaker driving signals, comprising:a filtering means for splitting each component of said spatial soundfield set into a set of frequency bands; a multiplicity of direction determining means, one for each frequency band, interconnected to said filtering means for determining a current corresponding spatial direction for a corresponding frequency band; a panning means connected to each of said direction determining means for panning a first portion of the spatial sound field to a corresponding set of first speakers feeds as determined by said spatial direction; a residual calculation means interconnected to said filtering means and said direction determining means and adapted to extract substantially said first portion from said spatial sound field signal components so as to provide a residual spatial sound field signal component; a residual decoder means interconnected to said residual calculation means and adapted to transform said residual spatial sound field signal into a corresponding set of second speaker feeds; a mixing means for combining said first and second speaker feeds to produce said set of loudspeaker driving signals.