Acoustical parameters that vary strongly with receiver position are not well suited for a global characterization of the acoustics of a space. Thus, there is a need for an objective echo parameter. In addition, it is important to avoid echoes, which are more likely to appear in an outdoor environment than in a room. The most important acoustical features of a theatre are that speech is sufficiently loud and clear, which can be described by acoustical parameters for strength and clarity. It is necessary to rethink the need for acoustical parameters instead of sticking to the well-established parameters meant for concert halls. Also, parameters that use the balance between early and late reflections are problematic when late reflections are more or less absent. The lack of late reflections means that the decay curve is often far from a straight line, and the reverberation parameters turn out to be unreliable. However, these parameters have been derived with closed spaces in mind, and it is not obvious that the same parameters are meaningful in an open-air theatre. * Corresponding author: acoustics of performance spaces are usually characterized by the reverberation time and a handful of other acoustical parameters defined in ISO 3382-1. Odeon A/S, DTU Science Park, Kongens Lyngby 2800, Denmark
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |