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Ultrasonic motion detectors

Susan M Lopez lopezs at musc.edu
Fri Sep 5 17:57:36 EST 1997

On an anecdotal experience-
	When doing graduate outplacement at the VA, it was common
knowledge that some sort of anti-theft device in the gift shop of the
hospital made it unbearable for hearing-aid users...  I'm not sure if this
was due to motion sensors or not.  Users reported no amplification and odd
buzzes in their aids.


On 5 Sep 1997, mark ross wrote:

> Anybody have experience, information, reports, etc. on the interference 
> caused by ultrasonic motions detectors (at 25 kHz) on the operation of 
> hearing aids? 
> Mark Ross

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