Acoustically enhanced electro-dynamic loudspeakers

Details Acoustically enhanced electro-dynamic loudspeakers Acoustically enhanced electro-dynamic loudspeakers

2006-11-14

2006-11-14

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S190000, C381S408000, C381S423000

Reexamination Certificate

active

07136501

ABSTRACT:
An electro-dynamic loudspeaker is provided with dampening arrangements that contribute to improved acoustical properties for the electro-dynamic planar loudspeaker. The dampening arrangements include providing a frame having a curved sidewall surface for reducing standing waves. Another design provides for a ferrofluid being disposed between the diaphragm and magnets of the electro-dynamic loudspeaker in order to dampen the resonance frequency of the device. In addition, a diaphragm of an electro-dynamic loudspeaker is provided with a short turn of conductor disposed along a fringe zone at an edge of the diaphragm in order to electro-dynamically dampen the edge resonance of the film.

REFERENCES:
patent: 3570626 (1971-03-01), Mochida et al.
patent: 4156801 (1979-05-01), Whelan et al.
patent: 4242541 (1980-12-01), Ando
patent: 4264789 (1981-04-01), Kaizu et al.
patent: 4281223 (1981-07-01), Ugaji et al.
patent: 4544805 (1985-10-01), Sawafuji
patent: 5850461 (1998-12-01), Zelinka
patent: 6154557 (2000-11-01), Montour et al.
patent: 6546106 (2003-04-01), Azima
patent: 6845166 (2005-01-01), Hara et al.
patent: 2001/0005419 (2001-06-01), Kermani et al.
patent: 2002/0191808 (2002-12-01), Croft, III et al.
patent: 2 765 767 (1999-01-01), None
Furihata et al., “Acoustic characteristics of an electrodynamic planar digital loudspeaker.” J Acoustical Society of America 114(1):174-184, Jul. 2003.

Affiliated with

Also associated with

Rating

Acoustically enhanced electro-dynamic loudspeakers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustically enhanced electro-dynamic loudspeakers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustically enhanced electro-dynamic loudspeakers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3647089