Very interesting
I can see that as a handy tool for eaves dropping and spying.
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Varmint, Thu 23 Jun 2022, 9:20,
Reply)
I seem to remember...
...that shining a laser on the window and recording the vibrations was used as a method of eavesdropping. Presumably using a high speed camera since Q has the budget for it!
Interesting link
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Ugi , it's a game of give and cake, Thu 23 Jun 2022, 10:40,
Reply)
You’d use an interferometer setup to generate an analogue signal
But yes. Lasers can be used to record sound at a distance, as long as you have a sufficiently flexible surface to bounce the laser off. Glass works.
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wheresthefish Partly filled with wrong, Thu 23 Jun 2022, 11:05,
Reply)
Given someone worked out how to see* through bushes at a distance I wouldn't be surprised if they haven't worked out how to work with multiple lasers to combine and recreate audio from poorer sources
*used multiple sources then reconstituted what was on the other side
(, Thu 23 Jun 2022, 11:26, Reply)
Yes, that was on
Tomorrows World back in the 80s! And I'm sure tech has moved on since then... the quality from this method certainly sounds improved.
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FridgeBadger, Thu 23 Jun 2022, 13:13,
Reply)
