Early Hi-Fi and Stereo Recording at Bell Laboratories (1931-1932)
Many present-day hi-fi items such as 33-1/3 r/min, Vinylite- records, 45°-45° stereo, wide frequency range, etc,. were byproducts of telephone research at Bell Laboratories in the 1920s and 1930s. A brief history of this work with Stokowsky and the Philadelphia Orchestra will be given.
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