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:
Feb. 18, 2020
Filed:
Oct. 23, 2015
Universite Du Maine, Le Mans, FR;
Centre National DE LA Recherche Scientifique (Cnrs), Paris, FR;
Stephane Durand, Pruille le Chetif, FR;
Petr Honzik, Prague, CZ;
Alexey Podkovskiy, Le Mans, FR;
Nicolas Joly, La Chapelle Saint Fray, FR;
Michel Bruneau, Le Mans, FR;
UNIVERSITE DU MAINE, Le Mans, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Paris, FR;
Abstract
Disclosed is an acoustic transducer for converting a sound signal into an electric signal, including a mobile element movable under the effect of the sound signal, a fixed element opposite the mobile element, a recess, and a dissipative element between the mobile and fixed elements. The coupled system has a natural frequency corresponding to a resonance frequency of the transducer set at maximum sensitivity. The mobile element, the fixed element, the dissipative element and the recess are configured so the quality factor of the acoustic transducer>2. The recess has a straight prismatic, cylindrical, or frustoconical shape, the mobile element forming a first base of the prism, cylinder, or frustum, the fixed element being inside the prism, cylinder or frustum, over the second base of the prism, cylinder or frustum. Such a transducer also incorporates an analogue filtering function for filtering the signal around the natural frequency of same.