Proceedings of the 10th Convention of the
European Acoustics Association
Forum Acusticum 2023


Politecnico di Torino
Torino, Italy
September 11 - 15, 2023





Session: A02-03: Eco-Acoustics and non-vocal bio-acoustics - Part II
Date: Thursday 14 September 2023
Time: 14:40 - 15:00
Title: 3D Audio-Visual Recordings of Mosquito Wings for Aeroacoustic Simulation
Author(s): L. Feugère, Natural Resources Institute, University of Greenwich, Central Avenue, ME4 4TB Chatham Maritime, UK
J.-H. Seo, Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, 21218, USA
U. Ismail, Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, 21218, USA
G. Gibson, Natural Resources Institute, University of Greenwich, Central Avenue, ME4 4TB Chatham Maritime, UK
R. Mittal, Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, 21218, USA
Pages: 5151-5158
DOI: https://www.doi.org/10.61782/fa.2023.0632
PDF: https://dael.euracoustics.org/confs/fa2023/data/articles/000632.pdf
Conference proceedings
Abstract

Mosquito acoustic communication is studied for its singular and poorly-known in-flight hearing mechanism, for its efficiency in mechanical-to-acoustical power transduction, as well as for being the deadliest disease vector. A combined computational and experimental methods to predict and extract the wing-tone sound from individual tethered or free-flying mosquitoes are developed. This paper describes the experimental methods and gives some preliminary results of the simulation. Simultaneous slow-motion images (20k fps) and 3D-sound of Culex quinquefasciatus mosquitoes were recorded. The sound map around the mosquitoes was recorded in one or two planes with a rotating array of 12-microphones. Back-illuminated mosquito-wings allowed us to visualize 11 wing-vein crossings which positions on each high-speed camera were semi-automatically extracted over 3-4 wingbeat periods to generate measured 3D deformations of the wing. Simultaneous 3D sound data recorded by microphone arrays were post-processed by using the physics-based independent component analysis to filter out the noise and generate the 3D sound map. The simulated wing-tone sound pattern generated from the aeroacoustic simulation agrees well with the one recorded in the experiment using the microphone array. The developed methods allow us to construct and investigate the wing tone soundscape of individual mosquito during the courtship and mate-chasing.