Loudspeaker

Details Loudspeaker Loudspeaker

2005-05-26

2011-10-04

Goins, Davetta W (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S399000, C381S400000, C381S401000, C381S407000, C381S408000

Reexamination Certificate

active

08031902

ABSTRACT:
A loudspeaker comprises a diaphragm, an edge operable to support, on a frame, the diaphragm in such a manner that enables vibration thereof, and a voice coil operable to generate a driving force. The voice coil is of an approximate rectangular shape, and a length of a long axis direction of the voice coil is no less than 60% of a length of a long axis direction of the diaphragm. Positions of long sides of the voice coil to be fixed on the diaphragm are positions corresponding to nodes of a primary resonance mode in a short axis direction of the diaphragm, or in the respective vicinities thereof. Accordingly, it is possible to realize a high sound quality loudspeaker having a narrow width (elongated structure), but not easily causing resonance, thereby obtaining a flat frequency characteristic.

REFERENCES:
patent: 4384173 (1983-05-01), Briefer et al.
patent: 5664024 (1997-09-01), Furuta et al.
patent: 5764784 (1998-06-01), Sato et al.
patent: 6654475 (2003-11-01), Nakaso
patent: 6920957 (2005-07-01), Usuki et al.
patent: 0 680 242 (1995-11-01), None
patent: 57-78300 (1982-05-01), None
patent: 57-97297 (1982-06-01), None
patent: 59-171489 (1984-11-01), None
patent: 61-168799 (1986-10-01), None
patent: 4-115698 (1992-04-01), None
patent: 7-298389 (1995-11-01), None
patent: 8-102992 (1996-04-01), None
patent: 10-327491 (1998-12-01), None
patent: 2003-47089 (2003-02-01), None
patent: 2004-88739 (2004-03-01), None
Supplementary European Search Report issued Mar. 18, 2011 in corresponding European Application No. 05 74 3801.
Hiroyuki Takewa et al., “Slim-type Speaker for Flat-panel Televisions”, Consumer Electronics, Digest of Technical Papers, International Conference on Las Vegas, NV, USA Jan. 7-11, 2006, Piscataway, NJ, USA, Jan. 7, 2006, IEEE, pp. 237-238, XP010896592, DOI: DOI: 10.1109/ICCE.2006.1598398, ISBN: 978-0-7803-9459-9.

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