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Gray Audograph

From Wikipedia, the free encyclopedia

Gray Audograph handset
Gray Audograph

The Gray Audograph was a dictation machine format introduced in 1945. It recorded sound by pressing grooves into soft vinyl discs,[1][2] like the competing, but incompatible, SoundScriber. It was manufactured by the Gray Manufacturing Company of Hartford, Connecticut, United States.

The Audograph recorded on thin vinyl discs of 15cm diameter, recording from the inside to the outside, the opposite of conventional gramophone records. Unlike conventional records, the disc was driven by a surface-mounted wheel. This meant that its recording and playback speed decreased toward the edge of the disc (like the Compact Disc and other digital formats), to keep a more constant linear velocity and to improve playing time,[3] which was ten minutes.[4]

Along with a Dictabelt sound recorder, an Audograph captured sounds recorded at the time of the John F. Kennedy assassination that were reviewed by the United States House Select Committee on Assassinations.

In 1950, Gray began to make a variant of the Audograph for AT&T, known as the Peatrophone; however, due to what at the time were the high costs of renting and installing the machine, it served only a niche market.[5]

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Transcription

References

  1. ^ "Audio History". www.videointerchange.com. Archived from the original on 2003-07-29.
  2. ^ Morton, David (2000). Off the Record: The technology and culture of sound recording in America. Rutgers University Press. ISBN 0-8135-2747-3.
  3. ^ The 78rpm Home Page - Center-Start 78s
  4. ^ "Vintage Technics, Gray Audograph model D6". Vintage Technics. 2022. A late 1950s model which used transistors.
  5. ^ "History of The Dictation Equipment Industry". Archived from the original on 2016-06-16. Retrieved 2007-05-04.

External links


This page was last edited on 12 January 2024, at 21:57
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