This research intend to develop a ubiquitous environment using hearing, in which the information sound is obtained whenever and wherever the visually impaired persons need. The proposed system has two features: one is pinpoint feature that tracks passersby and delivers sound only to a specific area, and the other is on-demand feature that delivers sound only they need. The performance test of this system is conducted compared with conven- tional loudspeakers. Finally, the method to show the necessity of information sound and the application of proposed system are discussed.