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Technology Stocks : FunPhone.com planning to go public?
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To: Jorj X Mckie who wrote (46)3/30/1999 9:04:00 PM
From: Bill Ulrich  Read Replies (3) of 647
 
Lucent attempted something similar, two years ago. Using the monitor glass as a resonating surface, one could induce a transmittable, audible signal by cancelling out cross-modulation frequencies using a CPU-generated bias tone as a mask. It was sort of a modified electret-condensor theory. The only limitation was a Nyquist ramification—it took too many CPU cycles to maintain a 2X sample rate for the intended bias frequency.

Later, an MIT team got a little further with a DAT-SCMS converter, but by then, Lucent had canned the idea. Don't know what happened to them afterwards—maybe FunPhone got a hold of it?
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