Achieving Realistic Auralisations Using an Efficient Hybrid 2D Multi-plane FDTD Acoustic Model

Stephen Oxnard; Damian Thomas Murphy

doi:10.14279/depositonce-21

Achieving Realistic Auralisations Using an Efficient Hybrid 2D Multi-plane FDTD Acoustic Model

Stephen Oxnard, Damian Thomas Murphy

Electronic Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

This research examines the validity of utilising a 2D multi-plane FDTD acoustic model to simulate low frequency sound propagation as part of a hybrid room impulse response (RIR) synthesis system. Analytic results, pertaining to the comparison of simulated low frequency multi-plane RIRs with both practical RIR measurements and 3D FDTD simulated RIRs, demonstrate that a good level of accuracy is attained through use of this hybrid modelling paradigm. This claim is further supported, in part, by comparative subjective test results. Furthermore, 2D multi-plane simulations are shown to be far more efficient than full 3D FDTD modelling procedures as they achieve a ∼98% reduction in computation time.

Original language	English
Pages	126
Number of pages	132
DOIs	https://doi.org/10.14279/depositonce-21
Publication status	Published - 3 Apr 2014
Event	EAA Joint Symposium on Auralization and Ambisonics - Berlin, Germany Duration: 3 Apr 2014 → 5 Apr 2014

Conference

Conference	EAA Joint Symposium on Auralization and Ambisonics
Country/Territory	Germany
City	Berlin
Period	3/04/14 → 5/04/14

Keywords

auralisation
FDTD methods
room acoustics

Access to Document

10.14279/depositonce-21

Oxnard2014Final published version, 784 KB

http://www.auralization.tu-berlin.de/

Cite this

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title = "Achieving Realistic Auralisations Using an Efficient Hybrid 2D Multi-plane FDTD Acoustic Model",

abstract = "This research examines the validity of utilising a 2D multi-plane FDTD acoustic model to simulate low frequency sound propagation as part of a hybrid room impulse response (RIR) synthesis system. Analytic results, pertaining to the comparison of simulated low frequency multi-plane RIRs with both practical RIR measurements and 3D FDTD simulated RIRs, demonstrate that a good level of accuracy is attained through use of this hybrid modelling paradigm. This claim is further supported, in part, by comparative subjective test results. Furthermore, 2D multi-plane simulations are shown to be far more efficient than full 3D FDTD modelling procedures as they achieve a ∼98% reduction in computation time.",

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