And the answer is...May 13 2007 at 9:25 PM | Bruce Williamson (no login) |
Response to Somethign doesn't ring true |
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As I thought the sounds were not SUBaudible they were in fact ULTRAsonic. Here's an excerpt from recent correspondence with one of the investigators.
"...the sound you heard was the result of the interaction of multiple ultrasound waves that created an audible 'beat'
frequency."
Bruce
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