Whizzer cone for loudspeaker for producing uniform frequency...

Details Whizzer cone for loudspeaker for producing uniform frequency... Whizzer cone for loudspeaker for producing uniform frequency...

2006-12-05

2006-12-05

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S423000

Reexamination Certificate

active

07146021

ABSTRACT:
A speaker cone is provided that contains a base portion, and the base portion has a front end and a rear end. The front end contains a plurality of discontinuities such that a first distance from a reference point on a longitudinal axis of the base portion to a first point on the front end is different than a second distance from the reference point to a second point on the front end. By creating the plurality of discontinuities in the front end of the base portion, the distortion or reduction in the amplitude of a flexural wave generated by the speaker cone is dramatically reduced.

REFERENCES:
patent: 1757107 (1930-05-01), Baltzley
patent: 3961378 (1976-06-01), White
patent: 4881617 (1989-11-01), Faraone
patent: 6026928 (2000-02-01), Maharaj
patent: 6026929 (2000-02-01), Faraone
patent: 6334505 (2002-01-01), Li
patent: 55052697 (1980-04-01), None

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