ARTIFICIAL REVERBERATION USING A HYPER-DIMENSIONAL FDTD MESH (MonPmOR11)

Author(s) : Antti Kelloniemi (Helsinki University of Technology, Finland) Patty Huang (Stanford University, United States) Vesa Välimäki (Helsinki University of Technology, Finland) Lauri Savioja (Helsinki University of Technology, Finland)

Abstract : A hyper-dimensional finite-difference time-domain mesh structure and its application to artificial reverberation modeling is introduced. It is shown to produce reverberation with a dense and irregular modal pattern beneficial for modeling the reverberation in rooms or musical instrument bodies at high frequencies. An example design of a four-dimensional FDTD mesh is analysed. The computational cost of the four-dimensional mesh is shown to be lower than that of a bank of second-order resonators producing the same number of modes.

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