Publications associées à Sound transmission class

Observation of non-reciprocal harmonic conversion in real sounds

Romain Christophe Rémy Fleury, Hervé Lissek, Xinxin Guo

Reciprocity guarantees that in most media, sound transmission is symmetric between two points of space when the location of the source and receiver are interchanged. This fundamental law can be broken in non-linear media, often at the cost of detrimental i ...

2023

Corona discharge actuator as an active sound absorber under normal and oblique incidence

Hervé Lissek, Stanislav Sergeev, Thomas Humbert

In the majority of active sound absorbing systems, a conventional electrodynamic loudspeaker is used as a controlled source. However, particular situations may require an actuator that is more resistant to harsh environments, adjustable in shape, and light ...

2022

PID-like active impedance control for electroacoustic resonators to design tunable single-degree-of-freedom sound absorbers

Hervé Lissek, Maxime Volery, Xinxin Guo

Sound absorption at low frequencies still remains a challenge in both scientific research and engineering practice. Natural porous materials are ineffective in this frequency range, as well as acoustic resonators which present too narrow bandwidth of absor ...

2022

Improving sound absorption through nonlinear active electroacoustic resonators

Romain Christophe Rémy Fleury, Hervé Lissek, Xinxin Guo

Absorbing airborne noise at frequencies below 300 Hz is a particularly vexing problem due to the absence of natural sound absorbing materials at these frequencies. The prevailing solution for low-frequency sound absorption is the use of passive narrow-band ...

2020

Wave-conversion active liner based on generalized Snell-Descartes law

Hervé Lissek

The Cremer’s impedance theoretical framework has been used for years to optimally design acousticliners for the aeronautic industry, such as honeycomb liners. This passive mean of sound absorption,which consists in rather thin (a few centimeters) honeycomb ...

Canadian Acoustical Association2019

Acoustic Topological Fano Resonances

Romain Christophe Rémy Fleury, Farzad Zangeneh Nejad

Originally discovered in the context of quantum mechanics in 1961, the ultra-sharp spectrum of the Fano resonance has nowadays established itself as centerpiece in modern engineering for realizing a large variety of prominent devices including low energy s ...

2019

Active acoustic resonators with reconfigurable resonance frequency, absorption, and bandwidth

Romain Christophe Rémy Fleury, Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Theodoros Koutserimpas

Acoustic resonators play a key role in the development of subwavelength-sized technologies capable of interacting with airborne audible sound, from its emission and absorption to its manipulation and processing. Specifically, artificial acoustic media made ...

2019

Multi-degree-of-freedom low-frequency electroacoustic absorbers through coupled resonators

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

Electroacoustic absorbers represent an interesting solution for low-frequency sound absorption in rooms. These systems simply consist of closed-box electrodynamic loudspeakers, whose acoustic impedance at the diaphragm is judiciously adjusted by connecting ...

Elsevier2018

Acoustic carpet cloak based on an ultrathin metasurface

Juan Ramon Mosig, Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani

An acoustic metasurface carpet cloak based on membrane-capped cavities is proposed and investigated numerically. This design has been chosen for allowing ultrathin geometries, although adapted to airborne sound frequencies in the range of 1 kHz (λ≈30 cm), ...

Amer Physical Soc2016

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Sound transmission class

Observation of non-reciprocal harmonic conversion in real sounds

Resonant Transducers Consisting of Graphene Ribbons with Attached Proof Masses for NEMS Sensors

Corona discharge actuator as an active sound absorber under normal and oblique incidence

PID-like active impedance control for electroacoustic resonators to design tunable single-degree-of-freedom sound absorbers

Improving sound absorption through nonlinear active electroacoustic resonators

Wave-conversion active liner based on generalized Snell-Descartes law

Acoustic Topological Fano Resonances

Active acoustic resonators with reconfigurable resonance frequency, absorption, and bandwidth

Multi-degree-of-freedom low-frequency electroacoustic absorbers through coupled resonators

Acoustic carpet cloak based on an ultrathin metasurface

Graph Chatbot

Chattez avec Graph Search

Observation of non-reciprocal harmonic conversion in real sounds

Resonant Transducers Consisting of Graphene Ribbons with Attached Proof Masses for NEMS Sensors

Acoustic Topological Fano Resonances

Corona discharge actuator as an active sound absorber under normal and oblique incidence

Multi-degree-of-freedom low-frequency electroacoustic absorbers through coupled resonators

PID-like active impedance control for electroacoustic resonators to design tunable single-degree-of-freedom sound absorbers

Acoustic carpet cloak based on an ultrathin metasurface

Active acoustic resonators with reconfigurable resonance frequency, absorption, and bandwidth

Improving sound absorption through nonlinear active electroacoustic resonators

Wave-conversion active liner based on generalized Snell-Descartes law