After a short introduction to auralization the most common methods of acoustic room simulation-ray tracing and the image source model-are discussed briefly. It is shown how the information contained in an energy histogram obtained by ray tracing can be converted into an "equivalent impulse response" which, after binaural processing, is ready for auralization sufficient for the auralization process. Furthermore the steps are discussed which are needed to transform this information into a binaural impulse response ready for a convolution with music signals.
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