Body sense speaker

Details Body sense speaker Body sense speaker

1991-02-11

1992-06-23

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

381203, 381202, 381194, 381151, 381200, H04R 2500

Patent

active

051250330

ABSTRACT:
There is disclosed a body speaker comprising a casing having an upper part and a lower part, the upper part having a central circular aperture closed by a cap, a thin magnetic disk with a small diameter centrally attached on the inside of the cap, a tubular member fixed around the central circular aperture of the upper part, a solenoid coil wound around the tubular member, and an oscillation body for oscillating in response to variation of the magnetic field of the solenoid coil, wherein gaps are formed between the upper and lower surfaces of the oscillation body and the inside surfaces of the upper and lower part of the casing when the oscillation body is fixed on the inside wall of the casing by means of the oscillation ring, so that the oscillation body freely oscillates upward and downward in response to variation of the magnetic field of the solenoid coil conducting current.

REFERENCES:
patent: 4829581 (1989-05-01), Nieuwendijk et al.
patent: 5054079 (1991-10-01), Frielingsdorf et al.

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