the next time an engineer puts an arbitrary figure on human "hearing":
http://news.yahoo.com/s/livescience/20091125/sc_livescience/surpriseyourskincanhear
Just think of all the double-blind testing that will have to be done over!
http://news.yahoo.com/s/livescience/20091125/sc_livescience/surpriseyourskincanhear
Just think of all the double-blind testing that will have to be done over!