Mixed reality visualization of room impulse responses on two planes by moving microphone

Yasuaki Watanabe; Yusuke Ikeda; Yasuhiro Oikawa

doi:10.1117/12.2631798

30 April 2022 Mixed reality visualization of room impulse responses on two planes by moving microphone

Yasuaki Watanabe, Yusuke Ikeda, Yasuhiro Oikawa

Proceedings Volume 12177, International Workshop on Advanced Imaging Technology (IWAIT) 2022; 121772W (2022) https://doi.org/10.1117/12.2631798
Event: International Workshop on Advanced Imaging Technology 2022 (IWAIT 2022), 2022, Hong Kong, China

Abstract

Mixed reality (MR) can be used to visualize three-dimensional (3D) sound fields in real space. In our previous study, we proposed a sound intensity visualization system using MR. The system visualizes the flow of sound energy in a stationary sound field by measuring sound intensity. However, room impulse responses (RIRs) are essential data when investigating the sound field of a room. Therefore, to demystify the time variation of the sound field, it is crucial to visualize the spatial distribution of RIRs. However, the measurement of multipoint RIRs requires considerable time and effort and a large microphone array. In this paper, we propose an MR visualization system for RIR mapping on two planes based on dynamic RIR measurement using a moving microphone. The proposed system simplifies the measurement of RIRs at multiple points owing to the dynamic measurement capabilities of a hand-held microphone. In the simulation experiment, the RIRs on the grid points were estimated from the microphone signal using the moving path of the microphone. The estimated results were visualized by the animation of RIR maps in real space using MR. From the experimental results, the MR animation of RIR maps on the two orthogonal planes can help demystify 3D sound propagation.

Citation Download Citation

Yasuaki Watanabe, Yusuke Ikeda, and Yasuhiro Oikawa "Mixed reality visualization of room impulse responses on two planes by moving microphone", Proc. SPIE 12177, International Workshop on Advanced Imaging Technology (IWAIT) 2022, 121772W (30 April 2022); https://doi.org/10.1117/12.2631798

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available