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Verification of Geometric Acoustics-Based Auralization Using Room Acoustics Measurement Techniques

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Geometric acoustic techniques such as ray-tracing, image-source and variants are commonly used in the simulation and auralization of the acoustics of an enclosed space. The shortcomings of such techniques are well documented and yet they are still the methods most commonly used and accepted in architectural acoustic design. This work compares impulse response based objective acoustic measures obtained from a 3D model of a medieval English church using a combination of image-source and ray-tracing geometric acoustic methods, with measurements obtained within the actual space. The results are presented in both objective and subjective terms, and include an exploration of optimized boundary materials and source directivity characteristics with problems and limitations clarified.

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