Edison speaks! Cracking the pallophotophone code

May 26, 2010

It’s the stuff of a flea market find, or a hidden treasure in the attic. A pile of dusty film canisters in the basement of the Schenectady Museum & Suits-Bueche Planetarium has yielded some of the world’s oldest surviving radio broadcasts. The 20 shows were first heard on Schenectady radio station WGY between 1929 and 1931. One features a talk by GE founder Thomas Edison in a broadcast celebrating the 50th anniversary of the incandescent light bulb. Another is a portion of a high school basketball game that’s believed to be the second oldest surviving sports broadcast. They were recorded on a long forgotten machine that GE developed in 1922 called a pallophotophone — after the Greek words for “shaking light sound” — in one of the earliest attempts to record sound on film. But there was only one catch with the great find: There weren’t any known pallophotophones in existence to play back the lost pieces of history. Enter the museum’s curator, Chris Hunter, and GE’s engineers, who together cracked the pallophotophone code.

Talk radio: GE founder Thomas Edison is seen here examining the quality of his motion picture film in 1912 in the library of his West Orange, NJ facility. Photo courtesy of Schenectady Museum.

When Chris came across the film canisters, he wasn’t quite sure what he had discovered. “There were just a lot of scribbles on the cans saying these were radio programs from the twenties,” Chris said.

He had been recruiting former GE engineer John Schneiter for the museum’s board and told him about the discovery. John then turned to Russ DeMuth, a GE Global Research Engineer, who jumped on the challenge and set out to build his own version of the pallophotophone by studing sketches of the original one designed by GE employee Charles Hoxie more than 80 years ago.

Russ gathered parts for his creation from eBay and elsewhere, all the time trying to figure out if it would actually work. “We didn’t know how these things were created,” Russ said. “We didn’t know whether this thing was going to work at all. We didn’t expect to hear anything.”

Déjà vu! : The recordings had stumped film preservation experts because they were made on 35mm sprocketless film, with each film containing a series of 8-10 parallel soundtracks. Russ’ machine, pictured above, uses modern motors and computer controls to recover the sound from the original film recordings.

But work it did, with the 80-year old recordings coming to life. On one broadcast is what is believed to be the oldest surviving recording of the NBC chimes. On another, the voices of Edison, Herbert Hoover and Henry Ford can be heard in the “Edison Light’s Golden Jubilee” broadcast of October 21, 1929. A portion featuring Edison is available below. At the time, GE commercialized the technology as the RCA Photophone, which was one of four competing technologies that ushered in the end of the silent movie era. The taping of the Edison broadcast in 1929 was part of ongoing tests with the technology.

At present, the museum is considering a number of options for the collection, including inventing a machine to play them for optimum quality. And there is a possibility the collection may become an exhibition at the museum, which owns 37 percent of the radio recordings made in the world before 1931.

Safe and sound: A piece of the pallophotophone film.

* Learn more about the Schenectady Museum
* Read more Global Research stories on GE Reports
* “In 1900 Electric Vehicles Reigned and Edison Charged Them!
* “GE unveils residential WattStation EV charger
* See GE’s innovation timeline


This entry was posted in Edison, Global Research, History, Other and tagged . Bookmark the permalink.
  • Paul Houpt

    Another amazing accomplishment by Russ DeMuth and John Schneiter echoing back to their partnership when both were part of the Automation and Control Systems Lab at Global Research. It’s great to see Russ hasn’t lost his edge at wizardry, cast in the mold of Mr. E himself! Hope you have this thing to look at in the museum one of these days!

  • Joly MacFie

    Edison sounds remarkably like WC Fields! I guess it’s just the regional accent.

  • Jack Theakston

    Wonderful. However, it sounds like they’re having azimuth problems with the film or whatever format the recording medium was on.

  • Samuel M. Sherman

    Congratulations on a great achievement of building the player to bring back these lost sounds to the world. Now if somebody could only decode what is on those thousands of years old metal disks found in a cave in Tibet we would be continuing on our quest to understand some of the true meanings of human history.

  • fluffy

    While building a device is neat and all, why not just scan the film in and reconstruct the waveform from that? Then you also don’t have to worry about damaging the original medium.

  • James L. Tanner

    By the way the actual rendition of Edison’s speech is on the GE Website. Here is the URL.

    http://www.gereports.com/edison-speaks-cracking-the-pallophotophone-code/

  • Greg B

    I admire the electro-optical-mechanical playback
    deck these gentlemen created, but the modern, and much more flexible, way to accomplish this is to use a line-scan digital video camera to digitize the entire filmstrip width and to go about decoding the sound information contained therein entirely by computer, perhaps with some human cleanup of the filmstrip images. By so doing it should be possible to improve the S/N ratio, make pitch adjustments, etc. to improve the sound quality. It may well be necessary to write a number of utility programs to perform the image-to-audio conversion, but once the high-fidelity images are made available to the public, in a format like .png or .tiff, several talented programmers might take up the challenge of producing the cleanest recording. Contact me
    if you would like to discuss the digitization process further.

  • M. Simon

    A better description of the recording technology and the playback technology would be a good thing for us geeks. The article is light on details.

    A rough drawing of the recording mechanism would be good.

    Is the recording done by modulating density? Or is it more like the Western Electric (variable width) technology?

  • Rudy Zvarich

    I am amazed by the very natural sound of audio fidelity in the recording. The recovered audio sounds to me exactly like a modern tape which has some wrinkles or oxide missing, but does not mask the recording’s excellent frequency responce.
    My jubilant thanks to you “genius” engineers who recovered these very valuable sounds of the past.
    I look forward to perhaps hear more in the future.

  • Gary Lacher

    This is a tremendous historical breakthrough in hearing what the GE sound system was like. I didn’t realize it was a full 35mm film format, but the original sound quality is terrific and being able to build the unit to play this system is commendable. It looks as though the system was meant to interlock with a picture film element, much like the disc method of Vitaphone.

  • Glen Cowan

    I take my hat off to the people involved for bringing this obscure audio medium back from the dead 80 years later. It gave me goosebumps hearing Edison speaking and I was rather impressed at the actual sound quality as well, quite amazing for back then considering the technology at the time.

  • Ken deGruchy Jr.

    I am fascinated to learn all about the GE pallophotophone. I have some RCA Talking Book 35mm sprocketless films that I wonder if they bear any relationship to the GE Pallophotophone system? I aquired these from the estate of my friend John A. Maurer Jr. who worked for the RCA Research Lab in NYC around 1930, specializing in photographic sound recording technology. From the picture of a film sample it appears that the two system are quite different with many more tracks having been recorded on the RCA Talking Book system.

  • Robert T. Balmer

    Two pieces of early sound-on-film GE technology reside at Union College. They are acconpanied by 3″X5″ cards entitled: SAMPLE USED TO DEMONSTRATE “How a film is made to talk – and what happens when the speed-time switch jams” by John Bellamy Taylor, along wit a short snippet of actual film. The cards were made for a meeting of the GE Industrail Department Managers, December 9-11, 1929. The equipment is vintage 1929, and appears to be a projector or sound track reader.

    Robert T, Balmer
    Emeritus Dean of Engineering and Computer Science
    Union College
    Schenectady, NY

  • yoyo

    i think a transcript of what he says is appropriate, it’s sometimes a bit hard to understand :\

  • .tc

    Edison:
    “Mr President, ladies and gentleman. I am told that tonight my voice will reach out to the four corners of the world.
    It is an unusual opportunity, for me to express my deep appreciation, and thanks to you all for the countless evidences of your good will. I thank you from the bottom of my heart. I would be embarrassed at ___ being heaped upon me this unforgettable night, would it not for the fact that in honoring me you are also honoring that best army of thinkers and workers of the past. And those who are clearly honored, without, my work would have gone for nothing. If I had sport meant of greater effort, you would have more worth. And If my work has widened the horizon, thousands of mens, undecidely even a little, have been given a measure of happiness in the world, then I am content.

    This expression makes me realize as ever before that Americans are sentimental. To have this ____ bit of Lights Golden Jubilee fills me with gratitude.

    I thank our president and you all. As to Henry Ford, word are ineliquent to express my feelings. I can only say to you, that in the fullest and richest of meanings of tears and turns, he is my friend. Goodnight.”

  • dave

    Hi, maybe it’s just me, but I can’t find the link to the portion where edison speaks to hear what it sounds like. Is it in flash? If so, I’m missing it because I’m blind and my screen reader isn’t finding it or something. I’m still looking for the full hour, maybe hour and a half? broadcast of this event from 1929. I know a collector who has it, I think, I hope, but not totally sure.

  • www.gereports.com

    Edison speaks cracking the pallophotophone code.. Retweeted it :)

  • Willard C. Reine

    I appreciate the information on this web page. Charles A. Hoxie was the brother of my paternal grandmother, Nellie Hoxie Reine. My father was John A. Reine. Nellie Hoxie married Joseph Reine, Sr.of Wisconsin. and they moved to Knob Noster, MO and raised their family on a farm about 6 miles north of town. I remember him coming to neighboring Warrensburg, MO to the home of another of Nellie’s children. I specifically remember him showing home movies there. That must have made a great impression on me because if he died in 1941 I could not have been over 6 years of age being born in 1935. I specifically remember my relatives saying that “Uncle Charlie invented the way to put sound on movie film.” and that he worked for GE.

  • Chris

    If anyone/anything ever comes across the golden Voyager records NASA sent up, they too will go through what Russ DeMuth did – figuring out just what to do with the thing. Bravo.

  • CH

    Edison also made a recording of his own voice on a 78 RPM record, to encourage people to support the war effort in WWI. The record also had the national anthems of several countries, but since the US didn’t have one yet, it played “America the Beautiful” for the US. My grandfather had this record, which we played on a hand-crank Edison phonograph, later stolen.

  • Nick Moore

    I actually built one of these in my basement a week ago. Mine was no where near as good but it was a very simple setup. You can find it on youtube “Pallophotophone, Sound on Film “