Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023 Politecnico di Torino Torino, Italy September 11 - 15, 2023 |
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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. |