This paper reviews the history of the development of audio technology in the United States from its origins in Alexander Graham Bell's telephone to the wartime work of the American electronics industry. It includes a comprehensive review of American contributions, including developments in electronic amplifiers, microphones, loudspeakers, and phonographic, optical, and magnetic recorders. The paper will place these technical developments in the overall context of American developments in audio engineering during this period, and will show how social and economic factors retarded the growth of magnetic recording technology in the United States.
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