146 citations · 380 across the 11 of their papers we have counts for
11 papers
Higher-order mode filtering by a resistive layer
Svetlana Kuznetsova, Yves Auregan, Vincent Pagneux
A method of higher-order modes filtering in an air-filled waveguide using a resistive layer is proposed. An analogue of Cremer's criterion is discussed and used to obtain the optim…
Exact analogue of the Hatano-Nelson model in 1D continuous nonreciprocal systems
Anis Maddi, Yves Auregan, Guillaume Penelet +2
We propose a general framework that enables the exact mapping of continuous nonreciprocal 1D periodic systems to the Hatano-Nelson (HN) model. Our approach, based on the two-port t…
Corona Discharge Actuator as an Active Sound Absorber Under Normal and Oblique Incidence
Stanislav Sergeev, Thomas Humbert, Hervé Lissek +1
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…
Slow sound laser in lined flow ducts
Antonin Coutant, Yves Aurégan, Vincent Pagneux
We consider the propagation of sound in a waveguide with an impedance wall. In the low frequency regime, the first effect of the impedance is to decrease the propagation speed of a…
Explicit approximation of the wavenumber for lined ducts
Maaz Farooqui, Yves Aurégan, Vincent Pagneux
For acoustic waves in lined ducts, at given frequencies, the dispersion relation leads to a transcendental equation for the wavenumber that has to be solved by numerical methods. B…
On the use of a Stress-Impedance Model to describe sound propagation in a lined duct with grazing flow
Yves Aurégan
With flow, the acoustical effect of a lined wall cannot be described by a single quantity like the wall impedance. At least two quantities are required. In addition to the impedanc…
Scattering by finite periodic -symmetric structures
V. Achilleos, Y. Aurégan, V. Pagneux
In this work, we study the transmission properties of one dimensional finite periodic systems with -symmetry. A simple closed form expression is obtained for the tota…
PT-symmetric scattering in flow duct acoustics
Yves Aurégan, Vincent Pagneux
We show theoretically and experimentally that the propagation of an acoustic wave in an airflow duct going through a pair of diaphragms, with equivalent amount of mean-flow-induced…
Low frequency sound attenuation in a flow duct using a thin slow sound material
Yves Auregan, Maaz Farooqui, Jean-Philippe Groby
We present a thin subwavelength material that can be flush mounted to a duct and which gives a large wide band attenuation at remarkably low frequencies in air flow channels. To de…
Fano resonance scattering in waveguide with an impedance boundary condition
Lei Xiong, Wenping Bi, Yves Aurégan
Sound propagation in a waveguide lined with one section of locally reactive material is studied by resonance scattering approach. The objective is to understand the effects of mode…
Slow sound in lined flow ducts
Yves Auregan, Vincent Pagneux
We consider the acoustic propagation in lined flow duct with a purely reactive impedance at the wall. This reacting liner has the capability to reduce the speed of sound, and thus…