Title page for E-project-042507-082349

Project Type MQP

Submission date 2007-04-25

Authors
Cody R Brenneman, cody@WPI.EDU, ECE
Kevin E Manelski, ECE

URN E-project-042507-082349

Sponsor NECAMSID

Title Laser Audio Bug

Advisors
King, Brian, EE
McNeill, John A, EE

Availability unrestricted

Abstract
Eavesdropping on conversations is difficult due to the attenuation of acoustic waves over long distances. By using surfaces close to an acoustic source as the microphone and detecting changes in those surfaces from a distance, speech can be reproduced accurately. If a reflective surface such as a window were utilized in this manner then a laser and photodetector can be used to measure changes due to acoustic pressure. Our device is intended to detect an audio signal using a laser.

Files
Laser_Audio_Bug.pdf

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Project Type	MQP
Submission date	2007-04-25
Authors	Cody R Brenneman, cody@WPI.EDU, ECE Kevin E Manelski, ECE
URN	E-project-042507-082349
Sponsor	NECAMSID
Title	Laser Audio Bug
Advisors	King, Brian, EE McNeill, John A, EE
Availability	unrestricted
Abstract Eavesdropping on conversations is difficult due to the attenuation of acoustic waves over long distances. By using surfaces close to an acoustic source as the microphone and detecting changes in those surfaces from a distance, speech can be reproduced accurately. If a reflective surface such as a window were utilized in this manner then a laser and photodetector can be used to measure changes due to acoustic pressure. Our device is intended to detect an audio signal using a laser.
Files	Laser_Audio_Bug.pdf