have a try if you are in Japan
http://www.tu-ka.co.jp/ts41_sp/page.html
also there are skin-microphones for military and law-enforcement
to pickup voice in a noisy environment like battle field.
it's possible to use these contact mics/phones to have whispering
conversation on board a JR train or in a University of Tokyo exam.
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Received on Tue Jan 27 17:35:01 2004