Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate
2004-02-06
2008-09-16
Le, Huyen D (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
C381S340000, C381S343000, C381S430000
Reexamination Certificate
active
07426281
ABSTRACT:
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.
REFERENCES:
patent: 1707617 (1929-04-01), Kellogg
patent: 4525604 (1985-06-01), Frye
patent: 4776428 (1988-10-01), Belisle
patent: 5701358 (1997-12-01), Larsen et al.
patent: 5987148 (1999-11-01), Hsieh
patent: 0 077 228 (1983-04-01), None
patent: 610 959 (1926-08-01), None
patent: 1 591 184 (1981-06-01), None
patent: 1 591 184 (1981-06-01), None
International Search Report.
Collard & Roe P.C.
Le Huyen D
Rötelzeichnung Holding A.G.
LandOfFree
Electrodynamic acoustic transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrodynamic acoustic transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrodynamic acoustic transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3988719