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Re: Alias due to lamps

I never realized the degree to which these high frequency sounds are being
blasted into the environment until I began using the Sonicguide.  Its receiver
transducers are primarily 45-90k and picked up everything from bats to car keys
to store lighting to automobile (especially small car) breaking systems.


Tom Brennan, CCC-A/SLP, RHD
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
web master http://titan.sfasu.edu/~f_freemanfj/speechscience.html
web master http://titan.sfasu.edu/~f_freemanfj/fluency.html