Applications of spatial equalizer

Abstract

Spatial equalizer is a user interface that can render spatial impression of sound. It essentially generates sound ball/balls in the selected space: they could be stationary or can move with respect to time and space. Theoretical foundation of the spatial equalizer stems from well-known Heygens principle and it is a practical means to implement the principle. Sound balls can generate any desired sound field upon user's request. Assuming that one has spatially distributed speakers, sound balls can be generated based on another well-known Kirchhoff-Helmholtz equation. Many applications are possible to use this tool, including how to make home theater, sound bar, car audio system, and even club sound system. Practical limitations and draw backs of using the spatial equalizer to those systems will be discussed.