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Laser Smoke Microphone






It would seem that to eliminate the background noise, 2 lasers would be used with something similar to Dolby.
 
“As far as I know, and I’ve been an AES member for 25 years, nobody has ever made a laser-based microphone work. We’re the first,”
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LOL ..... and how do he call all the laser-based hearing systems that uses vibrations and laser reflection or modulation, if not laser-microphones ?

And the ones based on lasers and mini-mirror plates ?

:p
 
That's a really interesting concept... but it could use more development.

Everything has to start somewhere.

Trevor
 
I suppose the difference is those laser listening systems use the solid glass of the window as a diaphragm whereas this uses a gas/particulate diaphragm. I imagine this means the laser system has a potential to be more sensitive to higher frequencies due to smoke being much less massive than other diaphragm materials.
This could be really interesting if you could use a "field" of lasers close together instead of just one so you could pick up the detail of the relative SPL/spread in the audio field.
 
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