Patent ID: 6498857
Filing Date: 2002-12-24
Classification: H04S

Abstract:
A method of synthesizing an audio signal having an appearance of being emitted from a region of space having a non-zero extent in one or more dimensions, comprising:providing a respective single channel signal for each of a plurality of point sound sources, said plurality of point sound sources together forming a virtual sound source; defining spatial relationships of said plurality of point sound sources relative to each another; selecting an apparent location for each of said plurality of point sound sources relative to a preferred position of a listener at a given time; processing said respective single channel signal for each of said plurality of point sound sources to provide a left channel signal and a right channel signal for each of said plurality of point sound sources, said left channel signal and said right channel signal including cues for perception of at least one of an apparent direction and a relative position of said each of said plurality of point sound sources with respect to said preferred position of said listener; and combining each of said plurality of left channel signals together and each of said plurality of right channel signals together to provide said audio signal having a left channel and a right channel corresponding to the said virtual sound source.