Microphone assembly

Details Microphone assembly Microphone assembly

1993-03-01

1994-07-26

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

359150, H04R 2500, H04B 900

Patent

active

053332059

ABSTRACT:
A microphone assembly (134) includes a movable diaphragm (124) and a linear light gradient (130) which causes the movement of diaphragm (124) to be translated into a corresponding amplitude of light to be received at a photo-detector (116). Thereby providing for a fully optical microphone assembly which is immune to radio frequency interference and resistance losses.

REFERENCES:
patent: 2835744 (1958-05-01), Harris
patent: 4412105 (1983-10-01), Muscatell
patent: 4432604 (1984-02-01), Schwab
patent: 4553813 (1985-11-01), McNaughton et al.
patent: 4556280 (1985-12-01), Bagby
patent: 4732446 (1988-03-01), Gipson et al.
patent: 4829165 (1989-05-01), Kalawsky
patent: 4833726 (1989-05-01), Shinoda et al.
patent: 4964693 (1990-10-01), Branan, Jr. et al.
patent: 5195087 (1993-03-01), Bennette et al.
Ealing Electro-Optics Inc., data sheet disclosing optical filter, Aug. 1992, 4 pages.

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