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Infrasound
Related publications (25)
A phenomenological extended-reaction boundary model for time-domain wave-based acoustic simulations under sparse reflection conditions using a wave splitting method
In environmental acoustics and in room acoustics, many surfaces exhibit extended-reaction (ER) behavior, i.e., their surface impedance varies with the angle of the incident sound wave. This paper presents a phenomenological method for modeling such angle d ...
ELSEVIER SCI LTD2021A glacier-ocean interaction model for tsunami genesis due to iceberg calving
Johan Alexandre Philippe Gaume, Ming Gao
Dynamic glacier fracture and the subsequent generation and propagation of iceberg-induced tsunamis are reproduced using a unified numerical glacier-ocean model, in line with observations at the Eqip Sermia glacier in Greenland, as well as laboratory experi ...
SPRINGERNATURE2021Development of a plasma electroacoustic actuator for active noise control applications
Ivo Furno, Alan Howling, Hervé Lissek, Pénélope Leyland, Stanislav Sergeev, Gennady Plyushchev
Conventional loudspeakers generate sound through the vibration of a diaphragm, attached to a rigid frame through elastic suspensions. Although such construction is satisfactory for sound diffusion in steady environments, it is likely to fail in harsh condi ...
2020Origin of High-Frequency Radiation During Laboratory Earthquakes
François Xavier Thibault Passelègue
We monitor dynamic rupture propagation during laboratory stick-slip experiments performed on saw-cut Westerly granite under upper crustal conditions (10-90 MPa). Spectral analysis of high-frequency acoustic waveforms provided evidence that energy radiation ...
AMER GEOPHYSICAL UNION2019Coupled-mode theory for stationary and nonstationary resonant sound propagation
Romain Christophe Rémy Fleury, Theodoros Koutserimpas
In this paper, we present a complete analytical derivation of the equations used for stationary and nonstationary wave systems regarding resonant sound transmission and reflection described by the phenomenological coupled-mode theory. We calculate the prop ...
2019Experimental Observation of Topological Fano Resonances for Audible Sound
Romain Christophe Rémy Fleury, Farzad Zangeneh Nejad
The Fano resonance is a widespread wave scattering phenomenon observed in many different systems, from cold atom physics, to electromagnetics, electronic circuits, and acoustics. It is characterized by a very sharp and asymmetric scattering cross-section s ...
2019Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope
François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Sébastien Alligné, Keita Yamamoto
At off-design operating operations, cavitating flow is often observed in hydraulic machines. The presence of a cavitation vortex rope may induce draft tube surge and electrical power swings at part load and full load operations. The stability analysis of t ...
2017High-Resolution fMRI of Auditory Cortical Map Changes in Unilateral Hearing Loss and Tinnitus
Dimitri Nestor Alice Van De Ville, Melissa Saenz, Wietske Van der Zwaag, Naghmeh Ghazaleh, Stephanie Clarke
Animal models of hearing loss and tinnitus observe pathological neural activity in the tonotopic frequency maps of the primary auditory cortex. Here, we applied ultra high-field fMRI at 7 T to test whether human patients with unilateral hearing loss and ti ...
Springer Verlag2017Neuroimaging of human auditory cortex
Modern neuroimaging technologies provide us with non-invasive methods for study- ing structure and function, and plasticity of the human auditory cortex. Here we have acquired high spatial resolution functional magnetic resonance imaging (fMRI) data of the ...
EPFL2017Hydroacoustic Modeling of a Cavitation Vortex Rope for a Francis Turbine
Hydraulic machines subject to off-design operation involve the presence of cavitating flow regimes in the draft tube. The cavitation vortex rope at part load conditions is described as an excitation source for the hydraulic system, and interactions between ...
EPFL2015