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A transcription disc is a special phonograph record intended for, or recorded from, a radio broadcast. Sometimes called a broadcast transcription or radio transcription or nicknamed a platter, it is also sometimes just referred to as an electrical transcription, usually abbreviated to E.T. among radio professionals.
The War of the Worlds radio broadcast by Orson Welles on electrical transcription disc. Before the early 1950s, when radio networks and local stations wanted to preserve a live broadcast, they did so by means of special phonograph records known as "electrical transcriptions" (ETs), made by cutting a sound-modulated groove into a blank disc. At ...
The Smith chart (sometimes also called Smith diagram, Mizuhashi chart (水橋チャート), Mizuhashi–Smith chart (水橋スミスチャート), [1] [2] [3] Volpert–Smith chart (Диаграмма Вольперта—Смита) [4] [5] or Mizuhashi–Volpert–Smith chart), is a graphical calculator or nomogram designed for electrical and electronics engineers specializing in radio ...
RCA Thesaurus, a brand owned by RCA Victor, was a supplier of electrical transcriptions. [1] It enjoyed a long history of producing electrical transcriptions of music for radio broadcasting which dated back to NBC's Radio Recording Division.
Equalization practice for electrical recordings dates to the beginning of the art. In 1926, Joseph P. Maxwell and Henry C. Harrison from Bell Telephone Laboratories disclosed that the recording pattern of the Western Electric "rubber line" magnetic disc cutter had a constant-velocity characteristic. This meant that as frequency increased in the ...
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The business evolved beyond gospel recordings and European composers during the 1940s, and in the 1950s SESAC established its electrical transcription service. [ 4 ] [ 5 ] On a monthly basis, SESAC recorded "transcriptions" of its affiliates and distributed them, on disc, to radio stations across America.