Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Aurégan Yves"'
Autor:
Aurégan Yves
Publikováno v:
Acta Acustica, Vol 8, p 10 (2024)
The acoustic behavior of a double annular resonator with flow is studied as a special case to illustrate the possibilities, but also the difficulties, offered by flow on the acoustic performance of metamaterials. Compared with the associated single r
Externí odkaz:
https://doaj.org/article/35fc9f712f3d49aeb46c9357c931a979
Publikováno v:
Acta Acustica, Vol 6, p 5 (2022)
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
Externí odkaz:
https://doaj.org/article/c151e2a43d9b49078b48dcff2b32185d
Publikováno v:
Acta Acustica, Vol 5, p 31 (2021)
In recent years, new concepts of acoustic absorbers dedicated to the reduction of low-frequency noise have been developed. Among them, liners with moving parts, such as membrane-based liners, have been an object of particular interest. In the present
Externí odkaz:
https://doaj.org/article/0a6415cc0a2041f39362386c324b04b6
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 optimal modal attenuation of the non-planar waves while the plane wave is p
Externí odkaz:
http://arxiv.org/abs/2307.08325
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 transfer matrix, is broadband and is applicable across various physical
Externí odkaz:
http://arxiv.org/abs/2306.12223
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
Externí odkaz:
http://arxiv.org/abs/2108.13866
Attenuation in acoustic waveguides with lossy impedance boundary conditions are associated with non-Hermitian and non-normal operators. This subject has been extensively studied in fundamental and engineering research, and it has been traditionally a
Externí odkaz:
http://arxiv.org/abs/2010.03646
Publikováno v:
Journal of the Acoustical Society of America 147 no. 5, (2020) 3124-3135
This work investigates anomalous transmission effects in periodic dissipative media, which is identified as an acoustic analogue of the Borrmann effect. For this, the scattering of acoustic waves on a set of equidistant resistive sheets is considered
Externí odkaz:
http://arxiv.org/abs/2001.00824
Publikováno v:
Journal of the Acoustical Society of America 146 no. 4, (2019) 2632-2644
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 acoustic waves. Therefore, a flow in the duct can exceed the wave propa
Externí odkaz:
http://arxiv.org/abs/1904.03079
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