Sound field evaluation by using closely located four-point microphone method and mixed reality technology

Wataru Teraoka, Yuta Kataoka, Yasuhiro Oikawa, Yusuke Ikeda

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

Abstract

The closely located four-point microphone method was proposed by Yamasaki in 1989. The method can grasp the spatial and temporal structures of sound reflections by estimating an image source distribution from four measured impulse responses. In recent years, mixed reality (MR) technology has rapidly developed and is now more familiar. Many sensors, display devices, and ICT technologies have been implemented in MR equipment, which enable interaction between real and virtual worlds. We proposed a MR display system for image source distributions and directivity patterns of sound reflections, which are obtained by the closely located four-point microphone method. In this paper, we propose a MR display system for some image source distributions measured at multiple measurement points. By moving in the room, the user can view the image source distribution in the room adjusting to the user's view point simultaneously. MR display enable us to observe the spatial and temporal structures of sound reflections in the room while maintaining a relationship between the positional information of the real room and the data, even when user moves around the room.

Original languageEnglish
Title of host publicationProceedings of the 23rd International Congress on Acoustics
Subtitle of host publicationIntegrating 4th EAA Euroregio 2019
EditorsMartin Ochmann, Vorlander Michael, Janina Fels
PublisherInternational Commission for Acoustics (ICA)
Pages4576-4582
Number of pages7
ISBN (Electronic)9783939296157
DOIs
Publication statusPublished - 2019
Event23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
Duration: 2019 Sep 92019 Sep 23

Publication series

NameProceedings of the International Congress on Acoustics
Volume2019-September
ISSN (Print)2226-7808
ISSN (Electronic)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
Country/TerritoryGermany
CityAachen
Period19/9/919/9/23

Keywords

  • Architectural acoustics
  • Closely located four-point microphone method
  • Mixed reality

ASJC Scopus subject areas

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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