The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2019
Filed:
Jul. 09, 2015
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite D'aix-marseille, Marseilles, FR;
Ecole Centrale DE Marseille, Marseilles, FR;
Sergio Bellizzi, Marseilles, FR;
Bruno Cochelin, Plan de Cuques, FR;
Renaud Cote, Digne les Bains, FR;
Philippe Martin Herzog, Roquevaire, FR;
Pierre-Olivier Mattei, Marseilles, FR;
Marc Pachebat, Marseilles, FR;
Cedric Pinhede, Marseilles, FR;
UNIVERSITE D'AIX-MARSEILLE, Marseilles, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIF, Paris, FR;
ECOLE CENTRALE DE MARSEILLE, Marseilles, FR;
Abstract
An attenuation device for attenuating sound waves, and a corresponding system and method, generated by a source emitting sound waves having frequencies between f1 and f2 and wherein the pressure levels are between n1 and n2. The attenuation device comprising at least one acoustic absorber comprising at least one non-linear membrane; the attenuation device being configured in such a way that the first face of the absorber is in acoustic communication with the source. The attenuation device also comprises at least one coupling element for coupling the second face with the source, the coupling element being configured to transmit to the second face sound waves according to the sound waves emitted by the source, and of which the phase and/or the amplitude leads to a pressure differential of the sound waves arriving respectively on the first and second face at the same time.