Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 52, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.52.07HC03
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Funding
- National Institute of Information and Communication Technology
- Grants-in-Aid for Scientific Research [23650127] Funding Source: KAKEN
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Sound field renderings are data-intensive and computation-intensive applications. An alternative solution is to directly implement sound field rendering algorithms by using hardware. In this paper, a hardware-oriented finite-difference time-domain (FDTD) algorithm named HO-FDTD is proposed for sound field rendering, which has no complex operations involved, and consumes small hardware resources. In a sound space with 32,768 elements surrounded by rigid walls, the hardware simulation results are in good agreement with the software simulation results except for the one-cycle delay. In the software simulation, when the element scale is 32 x 32 x 32 and the time steps are 20,000, the HO-FDTD speeds up computations by 19% against the updated digital Huygen's model (DHM) and Yee-FDTD, and by 132% against the original DHM. Compared with the software simulation, the hardware systems with the parallel architecture and the time-sharing architecture enhance their calculation performance significantly in the case of different element scales, and provide a higher data throughput. (C) 2013 The Japan Society of Applied Physics
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