A Spherical Array Approach for Simulation of Binaural Impulse Responses using the Finite Difference Time Domain Method

Jonathan Sheaffer, Maarten van Walstijn, Boaz Rafaely, Konrad Kowalczyk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
16 Downloads (Pure)

Abstract

The finite difference time domain (FDTD) method has direct applications in musical instrument modeling, simulation of environmental acoustics, room acoustics and sound reproduction paradigms, all of which benefit from auralization. However, rendering binaural impulse responses from simulated
data is not straightforward to accomplish as the calculated pressure at FDTD grid nodes does not contain any directional information. This paper addresses this issue by introducing a spherical array to capture sound pressure on a finite difference grid, and decomposing it into a plane-wave density
function. Binaural impulse responses are then constructed in the spherical harmonics domain by combining the decomposed grid data with free field head-related transfer functions. The effects of designing a spherical array in a Cartesian grid are studied, and emphasis is given to the relationships
between array sampling and the spatial and spectral design parameters of several finite-difference
schemes.
Original languageEnglish
Title of host publicationForum Acusticum 2014
Place of PublicationKrakow, Poland
PublisherEAA
Number of pages10
Publication statusPublished - 07 Sep 2014
EventForum Acusticum - Poland, Krakow, Poland
Duration: 07 Sep 201412 Sep 2014

Conference

ConferenceForum Acusticum
Country/TerritoryPoland
CityKrakow
Period07/09/201412/09/2014

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