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- W2080350908 abstract "The classical method for constructing room impulse responses (Allen and Berkeley, 1979) works for the case of rectangular rooms, and for general polyhedral rooms heuristic techniques are used. A new method for computation of the room impulse response of a general polyhedral room is presented. The method is based on the decomposition of the acoustic field into a free field and a sum of fields caused by interaction with the walls. These are modeled using a few multipole sources located outside the room. First a solution is developed for the case when the room is convex, and the walls are sound hard. Here the solution can be obtained using symmetry conditions for the multipoles re-expanded at proper locations. Using multipole translation theory, and truncation, a closed system of linear equations for the expansion coefficients is obtained, which can be solved to obtain the room impulse response. The method is then generalized to include wall impedances, by using linear differential transforms of multipole solutions. The method is validated by comparison with known solutions based on the image method for particular cases, and listening tests. [Work supported by NSF.]" @default.
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- W2080350908 date "2002-10-25" @default.
- W2080350908 modified "2023-09-25" @default.
- W2080350908 title "A multipole method for computation of acoustics of a convex polyhedral room" @default.
- W2080350908 doi "https://doi.org/10.1121/1.4808574" @default.
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