Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Patent
1998-01-13
2000-08-22
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
381406, 381408, 381162, 381360, 367140, H04R 2500
Patent
active
061084336
ABSTRACT:
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core member able to establish a variable magnetic field adjacent the core member. A movable diaphragm is stretched along and displaced a short separation distance from the core member to allow an intended range of orthogonal displacement of the diaphragm within a strong portion of the magnetic field. At least one conductive ring disposed on the movable diaphragm within the influence of the variable magnetic field of the core member for enabling current flow through the ring for developing a second magnetic field which interacts with the first magnetic field to repel and relax the diaphragm at a desired frequency for development of a series of compression waves which may be adjusted to include an ultrasonic frequency range.
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American Technology Corporation
Harvey Dionne N.
Kuntz Curtis A.
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