Two-way communication device

Details Two-way communication device Two-way communication device

2007-05-29

2007-05-29

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

C381S417000

Reexamination Certificate

active

10476715

ABSTRACT:
A two-way communication device includes a magnetoelastic rod located between an inertial back mass and a front panel of low mass. A coil is located in the vicinity of the rod, and the rod and coil together define an audio-electric transducer. An electronic processing circuit ensures that an audio-electric signal input to the device is applied to the coil to produce a sound wave from the low mass front panel and that when a sound wave impinges on the low mass front panel an audio-electric signal is produced and output from the device.

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Testardi, L.R. et al., “Electromagnetic-Sound Conversion by Linear Magnetostriction in T1FEF3,” Solid State Communications, Oxford, GB, vol. 7, No. 1, Jan. 1969, pp. 241-243 (ISSN: 0038-1098).

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