ABSTRACT
The starting point of modern room acoustics is marked by attempts to define physical sound field parameters which can be considered as the objective counterpart to the various components of the subjective acoustic impression that a listener has when sitting in a hall and attending a presentation. As shown in Fig. 7.1, these parameters or a set of them can be thought of as a link between the subjective world and the realm of architecture which yields geometrical and other room data. As we have seen from Chapter 7, quite a number of such parameters have been established. It is the object of this chapter to describe how such quantities can be measured and which kind of equipment is required for this purpose.
