Large-scale wave-based room acoustic simulations are commonly considered computationally expensive. Dis-tributed computing can be used to accommodate such methods for wide-bandwidth simulation, but may pose several challenges for real-time execution, such as communication and synchronization latencies between the computing hardware. In this paper, a system for real-time auralization of distributed ?nite-difference time-domain room acoustic simulation is proposed. Several experiments are conducted to measure the performance of the system. A proof-of-concept application where simulated responses from the distributed system are streamed to a virtual reality scene and auralized is constructed. It is found that distributed computing scales well with large off-line simulations, but synchronization latencies become a limiting factor in the implementation of a real-time system.

Authors: Saarelma, Jukka; Califa, Jonathan; Mehra, Ravish
Affiliations: Aalto University, Aalto, Finland; Oculus VR, Facebook(See document for exact affiliation information.)
AES Conference: 2018 AES International Conference on Spatial Reproduction - Aesthetics and Science (July 2018)
Paper Number: PP-1
Publication Date: July 30, 2018
Session Subject: Finite-difference time-domain; Room acoustic simulation; Auralization; MPI; Virtual Reality; Augmented reality

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