Compact microphone and method of manufacture

Details Compact microphone and method of manufacture Compact microphone and method of manufacture

1990-01-17

1991-07-16

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

181157, 181167, 381163, 381188, 381192, H04R 2500, H04R 700

Patent

active

050330934

ABSTRACT:
A microphone has a diaphragm having a dome central portion being formed of laminate of a thin layer of synthetic resinous material and a thin wire mesh contacting the central portion. As surrounding attachment portion is provided so that the diaphragm is free to vibrate in a plane perpendicular to itself. An annular voice coil is attached to and circumscribes the central portion on the concave side of the diaphragm and a fixed permanent magnet is disposed within the voice coil. The magnet is formed of neodymium iron-boron and the voice coil has an internal diameter greater than its thickness and the thickness of the magnet is greater than the thickness of the voice coil. A method of forming the described microphone is also set forth.

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Electro-Voice, "Electronics World" Apr. 1970, Back Cover.
Chi-Yie Chan, "Hi-Fi Stereo Device", p. 147-Fig. 4-74, Jan. 1975 (Reference A).
Amamoto, "The Design and Manufacture of a Speaker", Chapter 6, Figs. 6-1, 6-2, Nov. 1978 (Reference B).

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