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Variable Density B&W Film for monoaural audio



 
 
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  #1  
Old October 10th 06, 03:19 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Radium
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Posts: 25
Default Variable Density B&W Film for monoaural audio

Hi:

I like using variable-density analog B&W monoaural negative [no
positive and no "reversal"; just the negatives] film optical tracks for
audio. The audio characteristics of the film make my mouth-water. Yes,
for some wierd reason, the film's audio makes me hungry. To add to the
delicous audio quality , I would like to coat the film with bad-butter*
and tiny traces of bitminous and anthracite coals [as well the smoke of
those coals] before recording. After recording, I would like to clean
it in a dark environment and then develop the clean film.

Audio signal, in the form of light changing its intensity in an
analogous manner to the sound, is shined onto a negative film. The film
is developed and playback is accomplished by shining light of a
constant intensity onto the developed film. As the light goes through
the film, the patterns on the film will change the intensity of the
light that is received by a photoelectric cell. The change in light
intensity results in a changing electric current which is sent into an
amplifier and then to a loudspeaker.

http://www.mtsu.edu/~smpte/twenties.html

"The Tri Ergon Process uses a technology known as variable density,
which differed from a later process known as variable area. The Tri
Ergon process had a pattented flywheel mechanism on a sprocket which
prevented variations in film speed. This flywheel helped prevent
distortion of the audio. Tri Ergon relied on the use of a
photo-electric cell to transduce mechanicalsound vibrations into
electrical waveforms and then convert the electrical waveforms into
light waves. These light waves could then be optically recorded onto
the edge of the film through a photographic process. Another
photo-electric cell could then be used to tranduce the waveform on the
film into an electrical waveform during projection. This waveform
could then be amplified and played to the audience in the Theater. The
Fox Film Corporation acquired the rights to the Tri Ergon technology in
1927. "

The ERPI system, Fox-Case's Movietone, and De Forest's Phonofilm use
variable-density recording film audio

*Here is the link which describes how my "bad butter" is made:

http://groups.google.com/group/uk.fo...111377c?hl=en&


Regards,

Radium

  #2  
Old October 10th 06, 11:01 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Alex F
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Posts: 2
Default Variable Density B&W Film for monoaural audio

strange, but in a fascinating sort of way.

  #3  
Old October 10th 06, 03:27 PM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
J. Theakston
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Posts: 6
Default Variable Density B&W Film for monoaural audio


Alex F wrote:
strange, but in a fascinating sort of way.


Please don't feed the trolls.

J. Theakston

  #4  
Old October 11th 06, 05:44 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Radium
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Posts: 25
Default Variable Density B&W Film for monoaural audio


J. Theakston wrote:
Alex F wrote:
strange, but in a fascinating sort of way.


Please don't feed the trolls.

J. Theakston


I am not a troll.

  #5  
Old October 11th 06, 05:54 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Radium
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Posts: 25
Default Variable Density B&W Film for monoaural audio


Alex F wrote:
strange, but in a fascinating sort of way.


Any chance of my "Variable Density B&W Film for monoaural audio"
fanstasy turning real?

  #6  
Old October 11th 06, 06:37 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
David Nebenzahl
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Posts: 1,353
Default Variable Density B&W Film for monoaural audio

Radium spake thus:

J. Theakston wrote:

Alex F wrote:

strange, but in a fascinating sort of way.


Please don't feed the trolls.

J. Theakston


I am not a troll.


Hmmm; is your real name Michael Scarpitti?


--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)
  #7  
Old October 11th 06, 07:59 AM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Tom Phillips
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Posts: 115
Default Variable Density B&W Film for monoaural audio



David Nebenzahl wrote:

Radium spake thus:

J. Theakston wrote:

Alex F wrote:

strange, but in a fascinating sort of way.

Please don't feed the trolls.

J. Theakston


I am not a troll.


Hmmm; is your real name Michael Scarpitti?


hmmm...is your name David Nebenzahl?
  #8  
Old October 11th 06, 03:06 PM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Nicholas O. Lindan
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Posts: 1,227
Default Variable Density B&W Film for monoaural audio

"Radium" wrote

Any chance of my "Variable Density B&W Film for monoaural audio"
fanstasy [coating film with clarified butter and coal dust
before exposure] turning real?


From rec.photo.darkroom...

I think you are an exception to Usenet Property #1:

"The answer to the question 'Am I the only one?'
is always 'No'": there is somewhere someone with
the same interest to talk to.

You most likely are [or are about to become] the leading
authority on recording sound onto butter smeared film.
Whether this is possible, how it is done, and what are the
results -- the world can only await the report of your
experimental results.

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation
http://www.nolindan.com/da/index.htm
n o lindan at ix dot netcom dot com


  #9  
Old October 11th 06, 05:12 PM posted to rec.photo.film+labs,rec.arts.movies.tech,alt.photography,alt.photography.schools.nyip,rec.photo.darkroom
Scott Dorsey
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Posts: 31
Default Variable Density B&W Film for monoaural audio

Radium wrote:
Alex F wrote:
strange, but in a fascinating sort of way.


Any chance of my "Variable Density B&W Film for monoaural audio"
fanstasy turning real?


Sure. Call Trackwise or Chicago Optical, send them a tape and some money
and they'll send you back some film with a VD track. It might be a
substantial amount of money, though.

I can do 16mm VD tracks with an Auricon galvo box here, but I'd charge more
than a few hundred bucks to get the thing out of the closet and make sure it
is up to factory specs first.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
 




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