Active sound field control systems in auditoriums

Expectations and precautions

Abstract

This paper outlines the use of ASFC system in auditoriums and describes their principles, functions and features. My personal experiences with some of the systems are also reported, and problems related to this type of system are discussed from the viewpoint of an acoustical consultant. The design concept of the system installed in the Tokyo Metropolitan Art Space is presented as an example of introducing an ASFC system.