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A comment on New Technology Uses Lasers to Transmit Audible Messages to Specific People. Parent comment

Re:New Technology Uses Lasers to Transmit Audible Messages t... by ricardobeat on Friday February 01, 2019 @04:22AM (#19052763)
It states 60db - that’s normal conversation volume. Does the paper say otherwise?
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Re:New Technology Uses Lasers to Transmit Audible Messages t... by gmueckl on Friday February 01, 2019 @04:33AM (#19052806)
I could not find a reference to 60dB in the paper. It states 30dB SPL in the relevant plot, which is very quiet.
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Re:New Technology Uses Lasers to Transmit Audible Messages t... by stereographic on Friday February 01, 2019 @07:53AM (#19053682)
"In the lab, the researchers showed that commercially available equipment could transmit sound to a person more than 2.5 meters away at 60 decibels using the laser sweeping technique"

Granted, the laser sweeping technique trades off fidelity for the volume, this is still just laboratory tests and is not a "final product" in any sense.

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Re:New Technology Uses Lasers to Transmit Audible Messages t... by gmueckl on Friday February 01, 2019 @10:44AM (#19054986)
This claim still isn't in the paper, though. Not sure why the press release makes this much bolder claim. Seems a but weird to me. If I had the measurements to prove that, I'd include them in the paper.
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