A new variable acoustics technology and the research behind it

Abstract

The paper presents the room acoustic research behind the choice of design of a new variable acoustics technology. It discusses measurements from installations in labs and in a concert hall. Performing arts centres face the challenge of providing a good sound-experience for performers and audiences for a wide variety of types of performances. From theatre or amplified music one night to concerts of quiet chamber music the next. This calls, according to for instance ISO 23591, “Acoustic quality criteria for music rehearsal rooms and spaces”, for a variability of the reverberation time of a factor of almost 2 at lower frequencies. This standard, as well as recent research by the author is also debated.