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ORIGINAL RESEARCH article

Front. Acoust.

Sec. Acoustic Materials, Noise Control and Sound Perception

Volume 3 - 2025 | doi: 10.3389/facou.2025.1624669

This article is part of the Research TopicPerception-driven Acoustic EngineeringView all 3 articles

Human response to eVTOL drone sound: An online listening experiment exploring the effects of operational and contextual factors

Provisionally accepted
James  WoodcockJames Woodcock1*Adam  ThomasAdam Thomas1Ana  Luisa MaldonadoAna Luisa Maldonado1Laura  McLeodLaura McLeod1Calum  SharpCalum Sharp1David  HillerDavid Hiller1Fiona  SmithFiona Smith2
  • 1Arup Group (United Kingdom), London, United Kingdom
  • 2AGS Airports, Glasgow, United Kingdom

The final, formatted version of the article will be published soon.

Project CAELUS is developing the United Kingdom's first national distribution network using drones for the efficient transportation of vital medical supplies throughout Scotland. Noise is a major barrier to public acceptance of drone networks, yet empirical data on the human response to drones used in a medical context remains limited. This paper presents an online listening experiment designed to collect data on annoyance related to overflight (N = 425) and take-off (N = 278) drone operations for the eVTOL drone used in Project CAELUS. The experiment examines the effects of listener-drone distance, ambient soundscape (remote rural, rural village, urban), and contextual framing (medical delivery vs. no context) on annoyance.Results from aligned rank transform ANOVAs revealed significant effects of all three factors (p < 0.01). Annoyance was found to decrease with increasing distance from the drone and was higher in quieter ambient soundscape environments. Notably, providing contextual information about medical use significantly reduced annoyance, suggesting that the public acceptance of drone networks may be improved through effective community engagement.

Keywords: drone sound, Perception, Human response, Non-acoustic factors, Noise annoyance

Received: 07 May 2025; Accepted: 16 Jul 2025.

Copyright: © 2025 Woodcock, Thomas, Maldonado, McLeod, Sharp, Hiller and Smith. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: James Woodcock, Arup Group (United Kingdom), London, United Kingdom

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