超指向性音響システムとその応用(振動・音響計測・制御技術,特別オーガナイズドセッション「音色・音質設計技術〜開発者と利用者・第三者を繋ぐ」,振動・騒音改善技術)

抄録

Parametric loudspeakers can deliver sound to a defined spot in a room by producing waves that focus like a laser beam. The high-directivity sound system, based on this theory, has a wide area of prospective applications including voice guidance system for exhibition halls and public facilities. This report outlines the configuration of our high-directivity sound system and some application examples.