Modeling Sparsely Reflecting Outdoor Acoustic Scenes Using the Waveguide Web
Loading...
Access rights
openAccess
© 2017 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information.
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2017-06-12
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
1566-1578
1566-1578
Series
IEEE/ACM Transactions on Audio, Speech, and Language Processing, Volume 25, issue 8
Abstract
Computer games and virtual reality require digital reverberation algorithms, which can simulate a broad range of acoustic spaces, including locations in the open air. Additionally, the detailed simulation of environmental sound is an area of significant interest due to the propagation of noise pollution over distances and its related impact on well-being, particularly in urban spaces. This paper introduces thewaveguide web digital reverberator design for modeling the acoustics of sparsely reflecting outdoor environments; a design that is, in part, an extension of the scattering delay network reverberator. The design of the algorithm is based on a set of digital waveguides connected by scattering junctions at nodes that represent the reflection points of the environment under study. The structure of the proposed reverberator allows for accurate reproduction of reflections between discrete reflection points. Approximation errors are caused when the assumption of point-like nodes does not hold true. Three example cases are presented comparing waveguide web simulated impulse responses for a traditional shoebox room, a forest scenario, and an urban courtyard, with impulse responses created using other simulation methods or from real-world measurements. The waveguide web algorithm can better enable the acoustic simulation of outdoor spaces and so contribute toward sound design for virtual reality applications, gaming, and auralization, with a particular focus on acoustic design for the urban environment.Description
Keywords
acoustics, acoustic propagation, acoustic signal processing, IIR digital filters, numerical simulations
Other note
Citation
Stevens, F, Murphy, D T, Savioja, L & Välimäki, V 2017, ' Modeling Sparsely Reflecting Outdoor Acoustic Scenes Using the Waveguide Web ', IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 25, no. 8, 7918519, pp. 1566-1578 . https://doi.org/10.1109/TASLP.2017.2699424