In practice, impulse responses in rooms are calculated with algorithms that are based on models with limited physical validity, the ray tracing model, the mirror image source model or a mixture of both. This paper presents an alternative approach adopted from the seismic field, based on wave field extrapolation. Specular as well as non-specular reflections are simulated and detailed absorption properties of the boundaries can be taken into account.
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https://aes2.org/publications/elibrary-page/?id=8466
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