FOCALÂ POINT 3D AUDIO
A psychoacoustically correct HRTF-based positional audio technology, developed and patented by Bo Gehring, which does not require real-time signal processing.
RELATED LINKS WHICH MAY BE OF INTEREST
1996   US Patent 5,521,981
1998 NYU paper:   The Audio Computer - A New Computer Interface Paradigm
1992 SMPTE paper:   Interactive Entertainment with Three-Dimensional Sound
1992 Game Developer's Conference paper: Why 3D Sound Through Headphones?
For information and more links please call Bo Gehring - 845 838 1646
Thanks for your interest.