Comparison of direct intersection and sonogram methods for acoustic indoor localization of persons

Schott DJ, Saphala A, Fischer G, Xiong W, Gabbrielli A, Bordoy J, Höflinger F, Fischer K, Schindelhauer C, Rupitsch SJ (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Sensors MDPI

Book Volume: 21

Article Number: 4465

Journal Issue: 13

DOI: 10.3390/s21134465

Abstract

We discuss two methods to detect the presence and location of a person in an acousti-cally small-scale room and compare the performances for a simulated person in distances between 1 and 2 m. The first method is Direct Intersection, which determines a coordinate point based on the intersection of spheroids defined by observed distances of high-intensity reverberations. The second method, Sonogram analysis, overlays all channels’ room impulse responses to generate an intensity map for the observed environment. We demonstrate that the former method has lower computational complexity that almost halves the execution time in the best observed case, but about 7 times slower in the worst case compared to the Sonogram method while using 2.4 times less memory. Both approaches yield similar mean absolute localization errors between 0.3 and 0.9 m. The Direct Intersection method performs more precise in the best case, while the Sonogram method performs more robustly.

Authors with CRIS profile

Addythia Saphala Lehrstuhl für Digital Health Stefan Rupitsch

Involved external institutions

Albert-Ludwigs-Universität Freiburg DE Germany (DE) Fraunhofer-Institut für Kurzzeitdynamik / Fraunhofer Institute for High-Speed Dynamics / Ernst-Mach-Institut (EMI) DE Germany (DE)

How to cite

APA:

Schott, D.J., Saphala, A., Fischer, G., Xiong, W., Gabbrielli, A., Bordoy, J.,... Rupitsch, S.J. (2021). Comparison of direct intersection and sonogram methods for acoustic indoor localization of persons. Sensors, 21(13). https://doi.org/10.3390/s21134465

MLA:

Schott, Dominik Jan, et al. "Comparison of direct intersection and sonogram methods for acoustic indoor localization of persons." Sensors 21.13 (2021).

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