“SAION: selective audio image reproduction system using multiple hyper directional loudspeakers” by Nagao and Naemura

In museums, auditory information provides a greater understanding of exhibits to visitors. In these days, there are museum guidance systems presenting auditory information to viewers at particular positions such as hyper directional loudspeakers on ceilings above exhibits or mobile audio devices. However, sounds are presented from the ceiling or the devices, not from exhibits. Hence auditory information and exhibits are seldom associated together spatially.

1. Nakagaki. K and Kakehi.Y: SonalShooter: A Spatial Augmented Reality System Using Handheld Directional Speaker with Camera, ACM SIGGRAPH2011, Posters