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Audio History

Audio History. By: Alex Jones. 1877- Thomas Alva Edison succeeded Mary's little lamb with a strip of tin foil wrapped around a spinning cylinder that was when a phonograph was born. 1878- the first music is put on record Cornetist Jules levy plays “Yankee doodle”. 1881-

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Audio History

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  1. Audio History By: Alex Jones

  2. 1877- Thomas Alva Edison succeeded Mary's little lamb with a strip of tin foil wrapped around a spinning cylinder that was when a phonograph was born 1878- the first music is put on record Cornetist Jules levy plays “Yankee doodle”

  3. 1881- clement Ader using carbon microphones and amateur headphones accidently produced a stereo effect when listeners outside the hall monitor adjacent telephone lines linked stage mikes and the Paris Opera 1887- Emile Berliner is granted a patent on a flat disc gramophone making the production a multiple copies practical

  4. 1888- Edison introduces an electric mot0r phonograph 1895- Marconi successfully experiments with his wireless telegraphy system in Italy leading to the first transatlantic signals poldhu, Cornwall, UK, to St. John’s, Newfoundland in 1901 1901- the victor talking machine is founded by Emile Berliner & Eldridge Johnson

  5. 1906- lee deforest invents the triode vacuum tube, the first electronic signal amplifier. 1912- major Edwin F. Armstrong is issued a patent for a regenerative circuit making radio reception practical. 1913- the first “talking movie” is demonstrated by Edison using his kinetophone process a cylinder player mechanically synchronized to a film projector

  6. 1916- a patent for the superheterodyne is issued to Armstrong the society of motion picture engineers (SMPE) is formed Edison does live versus recorded demonstrations. 1919- The Radio Corporation of America (RCA) is founded it is owned in part by united fruit 1921- the first commercial AM radio broadcast is made by KDKA

  7. 1925- bell labs develops a moving lateral cutting system for electrical cutting on a disk, this all acoustic player with no electronics is considered a leap forward in phonograph design the first electrically recorded 78 rpm appear RCA works on the development of ribbon microphones 1927- “the jazz singer” is released as the first commercial talking picture using vitaphone sound on disk synchronized with film

  8. 1928- Dr. herald black at bell labs for a patent on the principle of negative feedback it is granted nine years 1931- Alan blumlein working for electrical and musical industries in London his patent discusses the theory of stereo both describing and picturing in the course of its 70 odd individual claims. Arrangement to a “45-45” cutting system for stereo disk

  9. 1932- the first cardioid ribbon microphone is patented my Dr. Henry F. Olson of RCA, using a field coil instead of a permanent magnet 1936- BASF makes the firs symphony concert during a visit by the touring London philharmonic orchestra

  10. 1938- Benjamin B. Bauer engineers a single microphone element to produce a cardioid pickup pattern called the unidyne model 55this later becomes the basis for the well known sm57 and the sm58 microphones 1939- independently in Germany , Japan and the U.S. discover and develop AC biasing for magnetic recording

  11. 1940- Walt Disney fantasia is released with eight track stereophonic sound. 1942- the RCA LC-1 loudspeaker is developed as a reference standard control room monitor. 1943- Altec develops their model 604coaxial loudspeaker

  12. 1946- Webster Chicago manufactures wire recorders for the home market. Brush development corp. builds a semiprofessional tape recorder as its model BK 401 sound mirror 3M introduces scotch No. 100 a black oxide paper tape Jack Mullin demonstrates “hi-fi” tape recording with his reconstructed magnetophon at an institute of radio engineers meeting in San Francisco

  13. 1951- the hot stylus technique is introduced to disk recording an ultra linear amplifier circuit is proposed by halfler and kereos pultec introduces the first active program equalizer the EQP-1 1955- ampex develops “sel- sync” making audio overdubbing practical 1961- 3M introduces the first s track closed loop capsan driver recorder

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