EP 1593288 B1 20090408 - ELECTRODYNAMIC ACOUSTIC TRANSDUCER
Title (en)
ELECTRODYNAMIC ACOUSTIC TRANSDUCER
Title (de)
ELEKTRODYNAMISCHER AKUSTISCHER WANDLER
Title (fr)
TRANSDUCTEUR ACOUSTIQUE ELECTRODYNAMIQUE
Publication
Application
Priority
- IB 2004000298 W 20040206
- FR 0301521 A 20030210
Abstract (en)
[origin: US7426281B2] The invention relates to an acoustic transducer generating a sound radiation by compression and expansion of an air mass situated between a mobile membrane and a fixed surface or between two mobile membranes. The present invention concerns a transducer or acoustic loudspeaker of electrodynamic type designed to emit sound waves from a modulated electrical signal. The particular arrangement of the constituent elements of the transducer as presented in the invention enables the generation of an acoustic radiation by compression and expansion of the air mass located between a mobile membrane and a fixed surface or anvil which are distinguished by being placed opposite one another. The direction of the resulting acoustical wave is perpendicular to the direction of displacement of the membrane. This manner of generating an acoustic wave enables the production of transducers with specific electroacoustic directivity characteristics.
IPC 8 full level
H04R 1/00 (2006.01); H04R 1/34 (2006.01); H04R 1/26 (2006.01)
CPC (source: EP US)
H04R 1/345 (2013.01 - EP US); H04R 1/26 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004071128 A2 20040819; WO 2004071128 A3 20040930; AT E428271 T1 20090415; DE 602004020447 D1 20090520; EP 1593288 A2 20051109; EP 1593288 B1 20090408; ES 2325261 T3 20090831; FR 2851115 A1 20040813; FR 2851115 B1 20080125; US 2006147076 A1 20060706; US 7426281 B2 20080916
DOCDB simple family (application)
IB 2004000298 W 20040206; AT 04708831 T 20040206; DE 602004020447 T 20040206; EP 04708831 A 20040206; ES 04708831 T 20040206; FR 0301521 A 20030210; US 54417705 A 20050802