High accuracy and high speed sound field rendering for the silicon concert hall

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In this study, high accuracy and high speed numerical schemes for the sound field rendering of the silicon concert hall are examined. The compact explicit finite difference time domain (CE-FDTD) method is applied to large-scale 3D sound field analysis to reduce computer resources. The CE-FDTD method is implemented on a GPU (Graphics Processing Unit) cluster system. The calculation performance is evaluated for the 3D sound wave propagation. The most accurate scheme is the interpolated wideband (IWB) scheme in which the cut-off frequency is in agreement with Nyquist frequency. The rendering results are then reproduced by the 24ch loudspeaker array system. It is confirmed that the high quality and high definition auralization can be realized.