Etienne Thierry Jean-Luc Rivet

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Publications associées (27)

Experimental assessment of low-frequency electroacoustic absorbers for room modal equalization in actual listening rooms

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Sami Driss Karkar, Véronique Adam

In listening rooms, low-frequency modal resonances lead to uneven distributions in space and frequency of the acoustic energy, as well as an alteration of the temporal behavior of the original music content. While usual absorption techniques have severe li ...

AES2016

Acoustic energy harvesting using electrochemical double layor capacitors: Technical feasibility and performance assessment

Mario Paolone, Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Dimitri Torregrossa, Sami Driss Karkar

This paper describes a first prototype harvesting the acoustic energy using electrochemical storage devices. In particular, the harvesting system is composed by an Electrochemical Double Layer Capacitors (EDLC) suitably coupled with an electroacoustic abso ...

IEEE2016

Egalisation modale des salles avec des absorbeurs électroacoustiques

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Sami Driss Karkar

L’égalisation du champ sonore aux basses fréquences (égalisation modale) est un véritable défi dans les salles d’enregistrement ou dédiées aux systèmes audio. Les résonances modales conduisent à une distribution irrégulière en espace et en fréquence de l’é ...

2016

Room Modal Equalisation with Electroacoustic Absorbers

Etienne Thierry Jean-Luc Rivet

The sound quality in a room is of fundamental importance for both recording and reproducing processes. Because of the room modes, the distributions in space and frequency of the sound field are largely altered. Excessive rise and decay times caused by the ...

EPFL2016

Electroacoustic absorbers for the low-frequency modal equalization of a room: what is the optimal target impedance for maximum modal damping, depending on the total area of absorbers?

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Sami Driss Karkar, Véronique Adam

Electroacoustic absorbers consist of loudspeakers, shunted with an electrical circuit designed to obtain a given acoustic impedance. Their design and principles are now well understood. Unidimensional experiments, using plane waves under normal incidence i ...

2014

Absorbeurs électroacoustiques pour l'égalisation modale des salles : Une nouvelle approche avec des haut-parleurs à double bobine

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Sami Driss Karkar

Le défi récurrent dans les salles dédiées aux systèmes audio de haute-fidélité est l’égalisation du champ sonore aux basses fréquences. Selon la position du point d’écoute, la réponse de la salle en ce point peut entrainer des niveaux de pression acoustiqu ...

2014

Baffle Electroacoustique

Hervé Lissek, Romain Boulandet, Etienne Thierry Jean-Luc Rivet

L'invention est relative à un Baffle électroacoustique muni d'un dispositif de réduction active du son sans capteur acoustique. The invention refers to an Electroacoustic baffle with ensorless active sound reduction capabilities. ...

Institut Nationale de la Propriété Industrielle2014

Development of electroacoustic absorbers as soundproofing solutions for industrial ventilation systems

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Victor Desarnaulds

In many industrial environments, room and cavity modes may severely strengthen the annoyance of low frequency noises, such as in ventilation equipments. Moreover, there is an obvious technological gap in the state-of-the-art relative to low-frequency sound ...

2013

Design of a built-in electroacoustic resonator for active noise reduction

Hervé Lissek, Romain Boulandet, Etienne Thierry Jean-Luc Rivet

The paper focuses on the design of a built-in electroacoustic device for active noise reduction purposes. The device basically encompasses a loudspeaker connected to a synthetic electrical impedance that enhances its ability to dissipate part of the incomi ...

2013

Optimization of electroacoustic resonators for semi-active room equalization in the low-frequency range

Hervé Lissek, Etienne Thierry Jean-Luc Rivet

At low frequencies, standing waves within the room cause large frequency-response variations in the listening environment, such as audio rooms or recording studios. This unwanted phenomenon has a significant impact on the sound quality of an audio system. ...

2013

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