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Dictaphone was spun off into a separate company in 1923 under the leadership of C. King Woodbridge. [2] In 1947, having relied on wax-cylinder recording to the end of World War II, Dictaphone introduced its Dictabelt technology. This cut a mechanical groove into a Lexan plastic belt instead of into a wax cylinder. The advantage of the Lexan ...
Transcribing dictation with a Dictaphone wax cylinder dictation machine, in the early 1920s. Note supply of extra wax cylinders on lower part of stand. A dictation machine is a sound recording device most commonly used to record speech for playback or to be typed into print. It includes digital voice recorders and tape recorder.
John F. Kennedy. A Dictabelt recording from a motorcycle police officer's radio microphone stuck in the open position became a key piece of evidence cited by the House Select Committee on Assassinations (HSCA) in their conclusion that there was a conspiracy behind the assassination of John F. Kennedy on November 22, 1963.
Charles Sumner Tainter (April 25, 1854 – April 20, 1940) was an American scientific instrument maker, engineer and inventor, best known for his collaborations with Alexander Graham Bell, Chichester Bell, Alexander's father-in-law Gardiner Hubbard, and for his significant improvements to Thomas Edison's phonograph, resulting in the Graphophone, one version of which was the first Dictaphone.
Having been intended for recording dictation and other speech for later transcription, it is a write-once-read-many medium consisting of a 5-mil (0.13 mm) thick transparent vinyl (according to a 1960s Dictaphone user manual: cellulose acetate butyrate) plastic belt 3.5 inches (89 mm) wide and 12 inches (300 mm) around. [2]
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The American Nurses Association was an example customer. Staff could dial in externally and record dictation over the phone. [22] In a survey done by Management World magazine in 1981, IBM was number 4 in the market with 27% of the respondents using their products. [20] The 6:5 range was withdrawn from marketing Dec 31, 1981. [11]
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