Abstract
Although computer modelling of sound systems is now a mature science, it is surprising how many inaccurate models are still being made. The paper identifies and discusses the most common causes for modeling errors that the authors’ regularly encounter. These include (1) lack of model detail and dimensional accuracy; (2) use of statistical calculations in non-diffuse or inhomogeneous (statistical) spaces; (3) errors due to modeling of materials with unknown absorption and scattering properties; (4) incorrect (or corrupt) loudspeaker data; (5) incorrect consideration of boundary effects and net energy flows; and (6) use of statistical calculations where discrete, long path echoes and reflections are present. Examples of each of the above error mechanisms will be presented together with their typical resultant calculation errors.
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