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Re: New basis for Hyper-sensitive mic

Subject: Re: New basis for Hyper-sensitive mic
From: "Klas Strandberg" klasstrandberg
Date: Tue Oct 10, 2006 8:31 am (PDT)
The approach has been tested a number of times to "laser-read" the
sound from a guitar. They got too much self-noise, I think, cause of
some inevitable laser -parameter.


  At 16:22 2006-10-10, you wrote:
>Syd Curtis wrote:
> > ... New Scientist magazine Issue of 30 Sept 2006, p 29:
> >
> >     "California inventor David Schwartz has filed a patent (US
> 2006/0182300)
> > on a hyper-sensitive microphone.  Instead of using sound waves to force=
> > heavy diaphragm to move, it fires a laser beam through a volume of mois=
> > air.  Incoming sound waves make water droplets in the air vibrate, whic=
> > modifies the laser beam's strength in sync with the sound - in other wo=
> > making it act as a microphone."
>Water droplets?  That implies saturated air.  And the odd passing cosmic
>ray might be able to induce the formation of water droplets for you ...
>sounds like a cloud chamber to me, but then I never bothered to listen
>to a cloud chamber.
>-- Mike
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links

Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01

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