With the advent of computer technology and research into numerical algorithms in the past decade, the use of computer software for acoustic design has been increasing at a very fast rate. Primarily, this type of software is either based on the finite-element/boundary-element method for low frequencies or the principles of geometrical acoustics for high frequencies. Unfortunately, few studies have been reported in the available literature with regard to the kind of accuracies that can be expected from these prediction methods. In this paper, predictions made by numerical algorithms based on geometrical acoustics are validated by comparisons with field measurements. Examples are given to illustrate how such predictive techniques can save time and cost in designing interior spaces to achieve good acoustics.:
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