acoustics
"RichD" wrote in message
A few days ago, I was in a room on the third floor, the
window was open, some people were conversating
down at street level. Their words came in, clear as a
bell, almost like being in the same room. I was
surprised, I thought the power would attenuate a lot
faster.
Then I wondered if it also works the other way - could
they hear our conversations, just as crisp?
I recall a discussion of optics, and someone remarked:
'I see you, you see me' is pretty much a universal law.
Does that also hold for acoustics?
Yes, acoustical reciprocity exists.
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