Design of a 3D Acoustic Camera for Sound Source Localization in Workplace Environments

Authors

Keywords:

Noise source localization, acoustic camera, GPU, real-time imaging, time-division multiplexing, GCC

Abstract

The increasing prevalence of noise-induced hearing loss among industrial workers highlights the need for advanced noise source localization in noisy, confined workplaces. In such settings, identifying noise sources remains a significant challenge. Acoustic cameras offer a promising solution, but their current limitations underscore the importance of innovating to develop more efficient and accessible tools for industrial applications. To address this, the project proposes the development of a portable 3D acoustic camera, combining an open spherical array of 64 MEMS microphones with an embedded platform for real-time signal processing. Innovations include time-division multiplexing (TDM) and a modified I2S protocol, enabling microphone spacing of up to 0.4 meters and simplifying the design of extended 3D arrays. Results are presented using a spherical array with a 0.31-meter radius and a 360° camera offering a refresh rate of 30 Hz on a 150,000-pixel grid. This system enables the 3D localization of multiple noise sources with centimeter-level precision and in real time, contributing to noise assessment and proactive measures for preventing hearing loss in industrial settings.

Additional Files

Published

2026-10-06

How to Cite

1.
Boileau L, Lemay J, Rouard K, Forma L, St-jacques J, Doutres O, Padois T, Sgard F, Nélisse H, Morin A, Berry A, Grondin F, Quaegebeur N. Design of a 3D Acoustic Camera for Sound Source Localization in Workplace Environments. Canadian Acoustics [Internet]. 2026 Oct. 6 [cited 2026 Oct. 7];54(2). Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/4237

Issue

Vol. 54 No. 2 (2026): June 2026

Section

Article - Engineering Acoustics / Noise Control

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.