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Perception of noise from unmanned aircraft systems: Efficacy of metrics for indoor and outdoor listener positions

Green, Nathan; Torija, Antonio J.; Ramos-Romero, Carlos

Perception of noise from unmanned aircraft systems: Efficacy of metrics for indoor and outdoor listener positions Thumbnail


Authors

Nathan Green



Abstract

This paper presents the results of a listening experiment designed to assess annoyance and perceived loudness (PL) for several unmanned aircraft system (UAS) operations, with the listener simulated in indoor and outdoor positions. This research investigated (i) how participant responses change depending on UAS operation, (ii) which broadband metrics are most suitable for representing annoyance and PL, (iii) differences in noise level required to result in equal participant responses to different operations, and (iv) which sound quality metrics (SQMs) are significant for UAS noise perception. Results indicate annoyance and PL responses were greatest for landing operations with flyovers being the least annoying or loud. LAeq, LASmax, and loudness (N5) were the strongest predictors in representing annoyance. Offset analysis predicted small differences in annoyance responses between flyovers and other operations, but also indicated that flyovers would require an increase to LASmax of 3.3 to 6.3 dB compared to other operations to achieve equal PL. Loudness was the most significant SQM, with minor contributions from impulsivity for annoyance and PL when outside, and tonality for PL when indoors. These findings contribute to the understanding of UAS noise perception for the development of metrics and assessment methods accounting for the characteristics of UAS operations.

Citation

Green, N., Torija, A. J., & Ramos-Romero, C. (2024). Perception of noise from unmanned aircraft systems: Efficacy of metrics for indoor and outdoor listener positions. ˜The œJournal of the Acoustical Society of America (Online), 155(2), 915-929. https://doi.org/10.1121/10.0024522

Journal Article Type Article
Acceptance Date Jan 5, 2024
Online Publication Date Feb 2, 2024
Publication Date Feb 1, 2024
Deposit Date Feb 9, 2024
Publicly Available Date Apr 4, 2024
Journal The Journal of the Acoustical Society of America
Print ISSN 0001-4966
Peer Reviewed Peer Reviewed
Volume 155
Issue 2
Pages 915-929
DOI https://doi.org/10.1121/10.0024522
Keywords Acoustics and Ultrasonics, Arts and Humanities (miscellaneous)

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Copyright (2024) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.






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