A discretization of the wave field synthesis method for auralization of natural sounds

César D. Salvador

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

Abstract

A complete description of the implementation of an immersive soundscape is proposed in this document. It begins with the time-discretization of the continuous wave field synthesis method for arbitrary contours, with special attention to the prefilter stage that involves a fractional order system. On this stage, the Al-alaoui discretization, the Grünwald-Letnikov approach for fractional expansion, and the Shank least squares approximation method to compute the zero-pole filter that generates the fractional system are described. The document goes on to explain the rendering of background and foreground sounds, using respectively plane and spherical wave models. The simulations of sound pressure fields inside the listening area also shown. Finally, simulations of a real case report a discretization percentage error around 1%, using 24 loudspeakers and a 5th order IIR pre-filter per channel.

Original languageEnglish
Title of host publicationIMCIC 2010 - International Multi-Conference on Complexity, Informatics and Cybernetics, Proceedings
EditorsJorge Baralt, Michael J. Savoie, Hsing-Wei Chu, C. Dale Zinn, Nagib C. Callaos
PublisherInternational Institute of Informatics and Systemics, IIIS
Pages47-52
Number of pages6
ISBN (Electronic)9781934272916
Publication statusPublished - 2010
Externally publishedYes
EventInternational Multi-Conference on Complexity, Informatics and Cybernetics, IMCIC 2010 - Orlando, United States
Duration: 2010 Apr 62010 Apr 9

Publication series

NameIMCIC 2010 - International Multi-Conference on Complexity, Informatics and Cybernetics, Proceedings
Volume1

Other

OtherInternational Multi-Conference on Complexity, Informatics and Cybernetics, IMCIC 2010
Country/TerritoryUnited States
CityOrlando
Period10/4/610/4/9

Keywords

  • Fractional order systems
  • Loudspeaker array
  • Soundscapes
  • Wave field synthesis

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications
  • Artificial Intelligence

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