EP 3213531 A1 20170906 - ELECTRO-ACOUSTIC TRANSDUCER, RELATED ASSEMBLY AND SYSTEM
Title (en)
ELECTRO-ACOUSTIC TRANSDUCER, RELATED ASSEMBLY AND SYSTEM
Title (de)
ELEKTROAKUSTISCHER WANDLER, ENTSPRECHENDE ANORDNUNG UND VORRICHTUNG
Title (fr)
TRANSDUCTEUR ÉLECTROACOUSTIQUE, ENSEMBLE ET SYSTÈME ASSOCIÉS
Publication
Application
Priority
- FR 1460325 A 20141027
- FR 2015052862 W 20151023
Abstract (en)
[origin: WO2016066938A1] The present invention concerns an acoustic transducer capable of converting a sound signal into an electric signal. The transducer comprises a mobile element that is movable under the effect of the sound signal, a fixed element opposite the mobile element, a recess (4), and a dissipative element (3) interposed between the mobile element and the fixed element. The coupled system formed in this way has a natural frequency corresponding to a resonance frequency of the transducer at which the sensitivity of same is at a maximum. The mobile element, the fixed element, the dissipative element and the recess are configured such that the quality factor of the acoustic transducer is greater than two. The recess (4) has a straight prismatic or cylindrical or frustoconical general shape, the mobile element forming a first base of the prism, cylinder or frustum, the fixed element being disposed inside said 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.
IPC 8 full level
H04R 19/00 (2006.01); H04R 19/04 (2006.01)
CPC (source: EP US)
H04R 7/04 (2013.01 - US); H04R 19/005 (2013.01 - EP US); H04R 19/02 (2013.01 - US); H04R 19/04 (2013.01 - EP US); H04R 9/18 (2013.01 - EP US); H04R 17/10 (2013.01 - EP US); H04R 21/00 (2013.01 - EP US); H04R 23/008 (2013.01 - EP US); H04R 2201/003 (2013.01 - US)
Citation (search report)
See references of WO 2016066938A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3027762 A1 20160429; FR 3027762 B1 20180119; EP 3213531 A1 20170906; EP 3213531 B1 20190911; US 10567885 B2 20200218; US 2017245059 A1 20170824; WO 2016066938 A1 20160506; WO 2016066938 A9 20170518
DOCDB simple family (application)
FR 1460325 A 20141027; EP 15791719 A 20151023; FR 2015052862 W 20151023; US 201515521702 A 20151023