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Audio Timeline

Audio Timeline. By: Shae Reid. The phonograph was born. In 1877, Thomas Alva Edison regained Mary’s Little Lamb from a strip of tinfoil wrapped around a spinning cylinder. He demonstrates his invention to the offices of Scientific American. The stereo affect.

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Audio Timeline

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  1. Audio Timeline By:ShaeReid

  2. The phonograph was born • In 1877, Thomas Alva Edison regained Mary’s Little Lamb from a strip of tinfoil wrapped around a spinning cylinder. • He demonstrates his invention to the offices of Scientific American.

  3. The stereo affect • In 1881, Clement Ader, using carbon microphones and armature headphones, accidentally produces a stereo effect when listeners outside the hall monitor adjacent telephone lines linked to stage mikes at the Paris Opera.

  4. Multiple copies of flat-disc gramophone. • In 1887, Emile Berliner is granted a patent on a flat-disc gramophone, making the production of multiple copies practical.

  5. Electric motor-drivin phonograph • In 1888, Edison introduces an electric motor-driven phonograph.

  6. First transatlantic signals • In 1895, Marconi successfully experiments with his wireless telegraphy system in Italy, leading to the first transatlantic signals from Poldhu, Cornwall, UK to St. John's, Newfoundland in 1901.

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

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

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

  10. The first “talking movie” • In 1913, The first "talking movie" is demonstrated by Edison using his Kinetophone process, a cylinder player mechanically synchronized to a film projector.

  11. The Scully disk recording • In 1917, The Scully disk recording lathe is introduced. • E. C. Wente of Bell Telephone Laboratories publishes a paper in Physical Review describing a "uniformly sensitive instrument for the absolute measurement of sound intensity" -- the condenser microphone.

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

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

  14. Magnetic recorder using steel tape • In 1929, Harry Nyquist publishes the mathematical foundation for the sampling theorem basic to all digital audio processing, the "Nyquist Theorem." • The "Blattnerphone" is developed for use as a magnetic recorder using steel tape.

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

  16. Magnetic recording on steel wire is developed commercially • In 1933, Magnetic recording on steel wire is developed commercially. • Snow, Fletcher, and Steinberg at Bell Labs transmit the first inter-city stereo audio program.

  17. first plastic-based magnetic tapes • In 1935, AEG (Germany) exhibits its "Magnetophon" Model K-1 at the Berlin Radio Exposition. • BASF prepares the first plastic-based magnetic tapes.

  18. first tape recording of a symphony concert • In 1936, BASF makes the first tape recording of a symphony concert during a visit by the touring London Philharmonic Orchestra. Sir Thomas Beecham conducts Mozart. • Von Braunmühl and Weber apply for a patent on the cardioids condenser microphone.

  19. first column loudspeaker array • In 1938, Benjamin B. Bauer of Shure Bros. engineers a single microphone element to produce a cardioids pickup pattern, called the Unidyne, Model 55. This later becomes the basis for the well known SM57 and SM58 microphones. • Under the direction of Dr. Harry Olson, Leslie J. Anderson designs the 44B ribbon bidirectional microphone and the 77B ribbon unidirectional for RCA. • RCA develops the first column loudspeaker array.

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

  21. Commercial FM broadcasting begins in the U.S • In 1941, Commercial FM broadcasting begins in the U.S. • Arthur Haddy of English Decca devises the first motional feedback, lateral-cut disk recording head, later used to cut their "ffrr" high-fidelity recordings.

  22. The first stereo tape recordings • In 1942, The RCA LC-1 loudspeaker is developed as a reference-standard control-room monitor. • Dr. Olson patents a single-ribbon cardioids microphone (later developed as the RCA 77D and 77DX), and a "phased-array" directional microphone. • The first stereo tape recordings are made by Helmut Kruger at German Radio in Berlin.

  23. Model 604 coaxial loudspeaker • In 1943, Altec develops their Model 604 coaxial loudspeaker.

  24. Sources • http://www.aes.org/aeshc/docs/audio.history.timeline.html

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