Digital Output Noise-Cancelling Fiber Optic Microphone

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$78,842.00
Award Year:
1995
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
27947
Agency Tracking Number:
27947
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
8608 University Green #5 Po, Box 620377, Middleton, WI, 53562
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
James P. Stec
(608) 831-0655
Business Contact:
() -
Research Institute:
n/a
Abstract
The work proposed will develop a Noise-Canceling Fiber Optic Microphone (NCFOM) with a digital output signal for use with AF communication systems. A first-order vented cavity NCFOM design and a dual diaphragm NCFOM design will be analyzed using already developed equivalent frequency circuits to determine the parameter values necessary for maximum directivity. Venting of the acoustic cavity or a passive diaphragm in the acoustic cavity will be used to adjust the directivity and noise cancellation characteristics of the microphones. A commercially available integrated circuit that converts light intensity to frequency will be used to provide a digital output signal for use with communication systems. This work would produce a microphone that could be used in both electrical and acoustic noisy environments.

* information listed above is at the time of submission.

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