Concept
Pression acoustique
Publications associées (78)
Localization of Sound Sources in a Room with One Microphone
Pierre Vandergheynst, Hervé Lissek, Helena Peic Tukuljac
Estimation of the location of sound sources is usually done using microphone arrays. Such settings provide an environment where we know the difference between the received signals among different microphones in the terms of phase or attenuation, which enab ...
Spie-Int Soc Optical Engineering2017Generation of acoustic helical wavefronts using metasurfaces
Juan Ramon Mosig, Hervé Lissek, Seyyed Hussein Seyyed Esfahlani
It has been shown that acoustic waves with helical wavefronts can carry angular momentum, which can be transmitted towards a propagating medium. Such a wave field can be achieved by using a planar array of electroacoustic transducers, forming a given spati ...
2017Localization of emergency acoustic sources by micro aerial vehicles
Dario Floreano, Felix Stephan Schill, Meysam Basiri
For micro aerial vehicles (MAVs) involved in search and rescue missions, the ability to locate the source of a distress sound signal is significantly important and allows fast localization of victims and rescuers during nighttime, through foliage and in du ...
John Wiley & Sons2017Sensorless Electroacoustic Absorbers Through Synthesized Impedance Control for Damping Low-Frequency Modes in Cavities
Hervé Lissek, Romain Boulandet, Etienne Thierry Jean-Luc Rivet
This paper presents a concept of sensorless electroacoustic absorber for damping the low-frequency modes in a cavity such as a duct or a room. Taking advantage of the reciprocity of the voice coil transducer, it is shown that a synthetic electrical admitta ...
S Hirzel Verlag2016Aircraft panel with sensorless active sound power reduction capabilities through virtual mechanical impedances
This paper deals with an active structural acoustic control approach to reduce the transmission of tonal noise in aircraft cabins. The focus is on the practical implementation of the virtual mechanical impedances method by using sensoriactuators instead of ...
Elsevier2016Representation of Sound Objects within Early-Stage Auditory Areas: A Repetition Effect Study Using 7T fMRI
Melissa Saenz, Wietske Van der Zwaag, Stephanie Clarke
Environmental sounds are highly complex stimuli whose recognition depends on the interaction of top-down and bottom-up processes in the brain. Their semantic representations were shown to yield repetition suppression effects, i. e. a decrease in activity d ...
Public Library of Science2015Acoustic Metasurface
Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani
Metasurfaces have gained fame for their ability to control the transmitted and reflected phase front of waves. Here, we introduce a reflector-type acoustic metasurface designed in such a way to control the phase front of reflected sound waves. The proposed ...
2015Robust Microphone Placement for Source Localization from Noisy Distance Measurements
Hervé Bourlard, Philip Neil Garner, Afsaneh Asaei, Mohammadjavad Taghizadeh, Saeid Haghighatshoar
We propose a novel algorithm to design an optimum array geometry for source localization inside an enclosure. We assume a square-law decay propagation model for the sound acquisition so that the additive noise on the measured source-microphone distances is ...
2015Equation of state of liquid mercury to 520 K and 7 GPa from acoustic velocity measurements
Ultrafast acoustics measurements on liquid mercury have been performed at high pressure and temperature in a diamond anvil cell using picosecond acoustic interferometry. We extract the density of mercury from adiabatic sound velocities using a numerical it ...
American Institute of Physics2014Virtual Reality for Architectural Acoustics
Over the last decades, powerful prediction models have been developed in architectural acoustics, which are used for the calculation of sound propagation in indoor and/or outdoor scenarios. Sound insulation is predicted rather precisely by using direct and ...
Taylor & Francis2014