EP 3384486 B1 20210728 - REFLECTIVE ACOUSTIC METAMATERIAL
Title (en)
REFLECTIVE ACOUSTIC METAMATERIAL
Title (de)
AKUSTISCHES REFLEKTIERENDES METAMATERIAL
Title (fr)
MÉTAMATÉRIAU ACOUSTIQUE RÉFLECTEUR
Publication
Application
Priority
- FR 1561750 A 20151202
- FR 2016053187 W 20161202
Abstract (en)
[origin: WO2017093690A1] The invention relates to an elementary cell (1) of acoustic metamaterial comprising: a body made of solid material (2); at least one Fabry-Pérot cavity (3) in said body (2); and at least one lateral resonant cavity (4) communicating with said Fabry-Pérot cavity (3); wherein: the Fabry-Pérot cavity (3) is a channel passing through said body (2); the lateral resonant cavity (4) is a Helmholtz acoustic resonator, and the Helmholtz resonator is a cylindrical cavity (4) concentric with the through-channel (3) and communicating with said channel (3) via a neck (5). The invention also relates to an acoustic baffle comprising at least one basic cell, said Fabry-Pérot cell (3) is a channel passing through said body (2), the Helmholtz resonator being a cylindrical cavity (4) concentric with the through-channel (3) and communicating with said channel (3) via a neck (5).
IPC 8 full level
G10K 11/04 (2006.01); G10K 11/172 (2006.01); G10K 11/168 (2006.01)
CPC (source: EP)
G10K 11/04 (2013.01); G10K 11/172 (2013.01); G10K 11/168 (2013.01); G10K 2210/3227 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017093690 A1 20170608; EP 3384486 A1 20181010; EP 3384486 B1 20210728; ES 2894800 T3 20220215; FR 3044813 A1 20170609; FR 3044813 B1 20181102
DOCDB simple family (application)
FR 2016053187 W 20161202; EP 16819152 A 20161202; ES 16819152 T 20161202; FR 1561750 A 20151202