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Audio Timeline

Audio Timeline. By: Harli Kilgore. What is Audio ?. Audio is an electrical or other representation of sound. Audio. Audio is Sound, esp. when recorded, transmitted, or reproduced. 1978. The first music is put on record: cornetist Jules Levy plays "Yankee Doodle.". 1888.

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Audio Timeline

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  1. Audio Timeline By: Harli Kilgore

  2. What is Audio? • Audio is an electrical or other representation of sound.

  3. Audio • Audio is Sound, esp. when recorded, transmitted, or reproduced.

  4. 1978 • The first music is put on record: cornetist Jules Levy plays "Yankee Doodle."

  5. 1888 • Edison introduces an electric motor-driven phonograph.

  6. 1898 • Valdemar Poulsen patents his "Telegraphone," recording magnetically on steel wire.

  7. 1900 • Boston's Symphony Hall opens with the benefit of Wallace Clement Sabine's acoustical advice

  8. 1906 • Lee DeForest invents the triode vacuum tube, the first electronic signal amplifier

  9. 1910 • Enrico Caruso is heard in the first live broadcast from the Metropolitan Opera, NYC

  10. 1912 • Major Edwin F. Armstrong is issued a patent for a regenerative circuit, making radio reception practical.

  11. 1916 • Edison does live-versus-recorded demonstrations in Carnegie Hall, NYC.

  12. 1919 • The Radio Corporation of America (RCA) is founded. It is owned in part by United Fruit.

  13. 1921 • The first commercial AM radio broadcast is made by KDKA, Pittsburgh PA.

  14. 1926 • O'Neill patents iron oxide-coated paper tape.

  15. 1927 • The Japan Victor Corporation (JVC) is formed as a subsidiary of the Victor Talking Machine Co

  16. 1928 • Dr. Georg Neumann founds a company in Germany to manufacture his condenser microphones. Its first product is the Model CMV 3.

  17. 1929 • Harry Nyquist publishes the mathematical foundation for the sampling theorem basic to all digital audio processing, the "Nyquist Theorem."

  18. 1931 • Arthur Keller and associates at Bell Labs in New York experiment with a vertical-lateral stereo disk cutter.

  19. 1932 • The first cardioid ribbon microphone is patented by Dr. Harry F. Olson of RCA, using a field coil instead of a permanent magnet.

  20. 1935 • BASF prepares the first plastic-based magnetic tapes.

  21. 1940 • Walt Disney's "Fantasia" is released, with eight-track stereophonic sound.

  22. 1941 • Arthur Haddy of English Decca devises the first motional feedback, lateral-cut disk recording head, later used to cut their "ffrr" high-fidelity recordings.

  23. 1944 • Arthur Haddy forms Ampex Corporation to make electric motors for the military.

  24. 1946 • Brush Development Corp. builds a semiprofessional tape recorder as its Model BK401 Soundmirror.

  25. 1947 • Ampex produces its first tape recorder, the Model 200

  26. 1948 • Scotch types 111 and 112 acetate-base tapes are introduced.

  27. 1950 • IBM develops a commercial magnetic drum memory

  28. 1950 • Guitarist Les Paul modifies his Ampex 300 with an extra preview head for "Sound-on-Sound" overdubs.

  29. 1951 • An "Ultra-Linear" amplifier circuit is proposed by Hafler and Keroes

  30. Work Cited Page • http://en.wikipedia.org/wiki/Audio • http://dictionary.reference.com/browse/audio?s=t • http://www.aes.org/aeshc/docs/audio.history.timeline.html

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