[78-L] pallophotophone / times union

[Mark Durenberger]

These touchstones may also be of interest:

http://www.durenberger.com/resources/documents/RADIOTALKINGMOVINGPICTURES0622.pdf

http://www.durenberger.com/resources/documents/MAKINGMOVIESSPEAK0423.pdf


I apologize; the site is still under construction...

Regards,

Mark Durenberger

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From: "Michael Biel" <mbiel at mbiel.com>
Sent: Monday, June 21, 2010 2:51 PM
To: "78-L Mail List" <78-l at klickitat.78online.com>
Subject: Re: [78-L] pallophotophone / times union

> Very interesting.  This article VERY clearly describes the recording
> process as acoustical.  But Hoxie had already applied for a patent for
> an electrical system where the light from the mirror on the horn would
> fall on a photoelectric cell which would operate the electrical light
> valve onto the film which could be at a distance.  This is how the
> Brunswick Light Ray microphone worked except that it generated a signal
> for the disc recording head.  The mentioning of an RCA-AT&T cross
> licensing does not affect this because we are talking about G.E., not
> AT&T.
>
> Mike Biel  mbiel at mbiel.com
>
>
>
> -------- Original Message --------
> Subject: Re: [78-L] pallophotophone / times union
> From: Michael Shoshani <mshoshani at sbcglobal.net>
> Date: Mon, June 21, 2010 3:22 pm
> To: 78-L Mail List <78-l at klickitat.78online.com>
>
> On Mon, 2010-06-21 at 11:39 -0700, Michael Biel wrote:
>> From: Vincent Fitzpatrick <jvftzjvftz at gmail.com>
>>
>> > At least some of those were acoustic--of Warren Harding and Calvin 
>> > Coolidge--correct?
>>
>> Harding wasn't recorded but your statement that the original films were
>> recorded acoustically has set me thinking. If I remember how what became
>> the "Light Ray" microphone that Brunswick used worked, there was a cone
>> diaphragm with a mirror at the back of the tip which vibrated with the
>> sound and varied the light it reflected onto a photocell. This would
>> make it an electrical source for the recording.
>
> Here's a very nice description of the Pallophotophone as applied to
> radio broadcasting, from a 1922 magazine, including a photograph which
> does show a small horn:
>
> http://books.google.com/books?id=vd7mAAAAMAAJ&pg=RA2-PA58&lpg=RA2-PA58&dq=pallophotophone+hoxie&source=bl&ots=bgvReKC89j&sig=1SQcVVX9MvhMI_zPPZwlFmtUHu0&hl=en&ei=lrkfTIPIBdSfnwfv54WNDg&sa=X&oi=book_result&ct=result&resnum=10&ved=0CDsQ6AEwCTge#v=onepage&q=pallophotophone%20hoxie&f=false
>
> I've read elsewhere that once RCA and AT&T cross-licensed each other in
> 1926, Dr. Hoxie was able to incorporate microphones and amplifiers into
> the system and make it all-electric. Not sure that would have been true,
> though, or why it would have taken until 1926 when Case was recording
> electrically onto film in 1923, and Tri-Ergon in...1919, I believe.
>
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