Effect of handy microphone movement in mixed reality visualization system of sound intensity

Yuta Kataoka, Wataru Teraoka, Yasuhiro Oikawa, Yusuke Ikeda

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

Abstract

We have proposed a system of real-time measurement and visualization for three-dimensional (3D) sound field by using mixed reality (MR) device. MR device enables effective visualization with depth perception using the 3D computer graphics (3DCGs) superimposed on the real world. Our system can superimpose 3D sound intensity data on the measurement points in the see-through head mounted display (STHMD). It helps us not only to understand the sound field but also to design it, to detect the source of noise, etc. Sound intensities are measured by freely and slowly scanning the sound field with a handy 4-ch microphone array. However, the measurement results of sound intensity would be affected by assuming a moving microphone array as fixed one. In this paper, we investigate the effect of microphone movement on sound intensity. To clarify the maximum of handy microphone speed to be assumed, microphone speeds were measured in measurement of sound field by using our proposed MR visualization system. Then, simulation experiments in a plane wave and a spherical wave were conducted to compare the sound intensities by fixed and moving microphone array at different speeds.

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)
Pages4438-4445
Number of pages8
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

  • Acoustic imaging
  • Augmented reality(AR)
  • Doppler effect
  • Mixed reality(MR)
  • Sound intensity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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