Acoustic transducer

Details Acoustic transducer Acoustic transducer

2006-08-28

2009-08-18

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S424000

Reexamination Certificate

active

07577269

ABSTRACT:
A transducer utilizes a sound-producing member positioned in the area of magnetic flux concentration between magnetic poles of opposite polarity. The sound-producing member is variably vibratable in a magnetic structure between the poles to generate acoustic waves, and an acoustic conduit carries the acoustic waves through the magnetic poles e to a location outside the magnetic structure.

REFERENCES:
patent: 6920230 (2005-07-01), Usuki et al.
patent: 7187779 (2007-03-01), Usuki et al.
patent: 227560 (1925-01-01), None
patent: 670027 (1952-04-01), None

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