Optimising the Acoustic Design for Multi-Purpose Rooms used for a Variety of Speech Communication Activities

摘要

The sound environment for a room designed for speech communication can be influenced by many factors. In a newly completed multi-purpose lecture room, we wanted to see the effects of the different design elements during the process including; utilising predictive modelling, the surface materials in terms of absorption performance, discussion, amount and placement as well as other design details influencing the overall sound environment. We have followed this project though the build and fit out process making acoustic measurements at different stages. Typically, a room of this type might have acoustic criteria for sound insulation and reverberation time. However, this can be somewhat limited when we compare the theoretical acoustic predictive modelling versus how the occupants might actually perceive the room in real life situations. We have measured additional room acoustic parameters such as speech clarity and the difference in sound levels. We will identify the acoustic differences as the room is built up with ceiling, wall and floor finishes, in addition to the design elements and furniture. Finally, we will discuss design configurations which can make a room fit for multi-purpose speech based activities.