On 11/17/2017 01:30 AM, Phil Allison wrote:
Jeff Layman wrote:

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** By all accounts, bouncing a IR laser off a widow is not practical.
The beam has to be precisely aligned *square on* to the window and
the resulting sound quality is abysmal.


I don't understand that. Why "square on"?


** The IR laser and its receiver have to be in the same location, maybe hundreds of yards away rom the target window, so alignment is near impossible.

Google the idea.



.... Phil


It's one of those ideas that sounds both plausible and really clever
except for the small detail that it doesn't work. Like extracting audio
from ancient times off the decorative grooves cut into clay pots while
spun on a wheel