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Rendering Environmental Noise Planning Models in Virtual Reality
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-7048-523x
Tyréns AB, Sweden.ORCID iD: 0000-0002-2237-878x
Tyréns AB, Sweden.
2019 (English)In: Proceedings of the ICA 2019 and EAA Euregio: 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019, Aachen, 2019, p. 6424-6431Conference paper, Published paper (Other academic)
Abstract [en]

In building and infrastructure projects sound design and requirement specification are often complicated by difficulties in understanding how the planned built environment will sound. Information about sounds is almost exclusively provided as sound pressure levels and sound reduction indices. It is difficult to understand how an environment will be perceived solely based on such data. VR models with sound give an experience much easier to comprehend. In this study, VR models were developed based on first order Ambisonics recordings. Such recordings provide spatial information and can be real time rendered based on the listener’s orientation. However, the recordings must be made in discrete points and therefore a model for cross-fading and mixing was developed. Recordings of road and railway sounds were made in a two dimensional grid and mixed and crossfaded based on the position of the listener. The sound levels were adjusted to match calculated levels from noise planning models. The spatial density of the grid of recordings, the cross-fading function, and the mix of recordings were varied and the realism of the models was assessed in listening tests. The results give guidance on how Ambisonics recordings could be mixed in order to achieve realistic sound in VR.

Place, publisher, year, edition, pages
Aachen, 2019. p. 6424-6431
Series
International Congress on Acoustics, ISSN 2226-7808, E-ISSN 2415-1599
Keywords [en]
Ambisonics, Auralisation, VR, Noise Planning
National Category
Fluid Mechanics and Acoustics
Research subject
Engineering Acoustics
Identifiers
URN: urn:nbn:se:ltu:diva-78877Scopus ID: 2-s2.0-85099328869OAI: oai:DiVA.org:ltu-78877DiVA, id: diva2:1430308
Conference
23rd International Congress on Acoustics, 9-13 September, 2019, Aachen, Germany
Funder
Swedish Foundation for Strategic Research, SM17-0023
Note

ISBN för värdpublikation: 978-3-939296-15-7

Available from: 2020-05-14 Created: 2020-05-14 Last updated: 2023-02-23Bibliographically approved

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Scopushttp://pub.dega-akustik.de/ICA2019/data/articles/000703.pdf

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Nykänen, ArneJohnsson, Roger

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CiteExportLink to record
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