Audio Timeline By: Eric Sutton Teacher: Mr. Hardin

1877 Thomas Alva Edison, working in his lab, succeeds in recovering Mary's Little Lamb from a strip of tinfoil wrapped around a spinning cylinder.

The first music is put on record: cornetist Jules Levy plays "Yankee Doodle." 1888 Edison introduces an electric motor- driven phonograph

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

Emile Berliner is granted a patent on a flat-disc gramophone, making the production of multiple copies practical Edison introduces an electric motor- driven phonograph.

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.

Valdemar Poulsen patents his "Telegraphone," recording magnetically on steel wire

1900 Poulsen unveils his invention to the public at the Paris Exposition. Austria's Emperor Franz Josef records his congratulations. Boston's Symphony Hall opens with the benefit of Wallace Clement Sabine's acoustical advice

1901 The Victor Talking Machine Company is founded by Emile Berliner and Eldridge Johnson. Experimental optical recordings are made on motion picture film.

1906 Lee DeForest invents the triode vacuum tube, the first electronic signal amplifier Enrico Caruso is heard in the first live broadcast from the Metropolitan Opera, NYC.

Major Edwin F. Armstrong is issued a patent for a regenerative circuit, making radio reception practical. The first "talking movie" is demonstrated by Edison using his Kinetophone process, a cylinder player mechanically synchronized to a film projector

1916 A patent for the superheterodyne circuit is issued to Armstrong. The Society of Motion Picture Engineers (SMPE) is formed. Edison does live-versus-recorded demonstrations in Carnegie Hall, NYC.

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.

1919 The Radio Corporation of America (RCA) is founded. It is owned in part by United Fruit The first commercial AM radio broadcast is made by KDKA, Pittsburgh PA

1925 Bell Labs develops a moving armature lateral cutting system for electrical recording on disk. Concurrently they Introduce the Victor Orthophonic Victrola, "Credenza" model. This all- acoustic player -- with no electronics -- is considered a leap forward in phonograph design. The first electrically recorded 78 rpm disks appear. RCA works on the development of ribbon microphones.

O'Neill patents iron oxide-coated paper tape.

"The Jazz Singer" is released as the first commercial talking picture, using Vitaphone sound on disks synchronized with film. The Columbia Broadcasting System (CBS) is formed. The Japan Victor Corporation (JVC) is formed as a subsidiary of the Victor Talking Machine Co.

1967 Richard C. Heyser devises the "TDS" (Time Delay Spectrometry) acoustical measurement scheme, which paves the way for the revolutionary "TEF" (Time Energy Frequency) technology. Altec-Lansing introduces "Acousta-Voicing," a concept of room equalization utilizing variable multiband filters. Elektra releases the first electronic music recording: Morton Subotnick's Silver Apples of the Moon. The Monterey International Pop Festival becomes the first large rock music festival. The Broadway musical Hair opens with a high-powered sound system. The first operational amplifiers are used in professional audio equipment, notably as summing devices for multichannel

Dr. Thomas Stockham begins to experiment with digital tape recording. Bill Hanley and Company designs and builds the sound system for the Woodstock Music Festival. 3M introduces Scotch 206 and 207 magnetic tape, with a s/n ratio 7 dB better than Scotch 111.

Thanks for Watching By: Eric Sutton Credits to timeline.html