Audio is an electrical or other representation of sound.
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Transcript of Audio is an electrical or other representation of sound.
Audio TimelineBy: 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
Edison introduces an electric motor-driven phonograph.
1898
Valdemar Poulsen patents his "Telegraphone," recording magnetically on steel wire.
1900
Boston's Symphony Hall opens with the benefit of Wallace Clement Sabine's acoustical advice
1906
Lee DeForest invents the triode vacuum tube, the first electronic signal amplifier
1910
Enrico Caruso is heard in the first live broadcast from the Metropolitan Opera, NYC
1912
Major Edwin F. Armstrong is issued a patent for a regenerative circuit, making radio reception practical.
1916
Edison does live-versus-recorded demonstrations in Carnegie Hall, NYC.
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, Pittsburgh PA.
1926
O'Neill patents iron oxide-coated paper tape.
1927
The Japan Victor Corporation (JVC) is formed as a subsidiary of the Victor Talking Machine Co
1928
Dr. Georg Neumann founds a company in Germany to manufacture his condenser microphones. Its first product is the Model CMV 3.
1929
Harry Nyquist publishes the mathematical foundation for the sampling theorem basic to all digital audio processing, the "Nyquist Theorem."
1931
Arthur Keller and associates at Bell Labs in New York experiment with a vertical-lateral stereo disk cutter.
1932
The first cardioid ribbon microphone is patented by Dr. Harry F. Olson of RCA, using a field coil instead of a permanent magnet.
1935
BASF prepares the first plastic-based magnetic tapes.
1940
Walt Disney's "Fantasia" is released, with eight-track stereophonic sound.
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.
1944
Arthur Haddy forms Ampex Corporation to make electric motors for the military.
1946
Brush Development Corp. builds a semiprofessional tape recorder as its Model BK401 Soundmirror.
1947
Ampex produces its first tape recorder, the Model 200
1948
Scotch types 111 and 112 acetate-base tapes are introduced.
1950
IBM develops a commercial magnetic drum memory
1950
Guitarist Les Paul modifies his Ampex 300 with an extra preview head for "Sound-on-Sound" overdubs.
1951
An "Ultra-Linear" amplifier circuit is proposed by Hafler and Keroes
Work Cited Page
http://en.wikipedia.org/wiki/Audio http://dictionary.reference.com/bro
wse/audio?s=t http://www.aes.org/aeshc/docs/aud
io.history.timeline.html