1. Audio Timeline
By: Cade Thompson

2. 1877
Thomas Edison's phonograph was invented in 1877.

3. 1878
The first music is put on record: cornetist Jules Levy plays "Yankee Doodle.

4. 1888
  In 1888, Emile Berliner filed and patented a talking machine which also recorded and played back sound. (The gramophone)

5. 1898
Valdemar Poulsen patents his "Telegraphone," recording magnetically on steel wire.

6. 1901
The Victor Talking Machine Company is founded by Emile Berliner and Eldridge Johnson.

7. 1906
Lee DeForest invents the triode vacuum tube, the first electronic signal amplifier.

8. 1912
Major Edwin F. Armstrong is issued a patent for a regenerative circuit, making radio reception practical.

9. 1913
The first "talking movie" is demonstrated by Edison using his Kinetophone process, a cylinder player mechanically synchronized to a film projector.

10. 1929
The "Blattnerphone" is developed for use as a magnetic recorder using steel tape.

11. 1930
Before the development of oxide based magnetic tape, the stainless steel piano wire recorder was the dominant audio recording format of choice.

12. 1932
The first cardioid ribbon microphone is patented by Dr. Harry F. Olson of RCA, using a field coil instead of a permanent magnet..

13. 1936
The Tefifon used an endless  vinyl belt housed in a cassette that recorded the tracks.

14. 1940
Walt Disney's "Fantasia" is released, with eight-track stereophonic sound.

15. 1945
The Audograph used technology, in that the modulated grooves were embossed onto soft vinyl.

16. 1945
The soundscriber used flexible vinyl records were "cut" using a stylus cutting head and playback  was made on a dedicated player.

17. 1947
Dictabelts are flexible belts of vinyl  .005" thick by 3 1/2 inches wide with a circumference of 12 inches, which allowed up to approximately 15 minutes of recording time per belt. This machine works just like the soundscriber.

18. 1957
The Sonaband Walkie RecordAll used the same technology as that of the Dictabelt. It embossed the audio information onto a soft vinyl belt with a stylus, instead of cutting grooves into harder materials.

19. 1957
The portable dictet dictation recorder by the Dictaphone Corporation, was the very first dictation machine to use magnetic tape cassettes. (dictaphone dictet)

20. 1958
In 1958 RCA developed an audio cartridge system known simply as the sound tape cartridge.

21. 1959
Introduced in 1959 by Collins Radio, the cart tape format was designed for use by radio broadcasters to play commercials,  bumpers, and announcements. 

22. 1960
In 1960, the magnabelt was invented. It was another type of dictation machine.

23. 1962
Ironically, the compact cassette is still in wide use today and was never intended for such wide use.

24. 1964
The Sanyo Pack 35 was an early format portable dictation player/recorder for busy executives in the 1960’s.

25. 1977
The Elcaset format was introduced by Sony in 1977.  Though marketed as a consumer format, it was intended as a platform to offer open reel to reel quality with the convenience of a compact cassette.

26. 1978
The Sony PCM-F10, though not the first digital stereo recorder, was the first to make it truly affordable.

27. 1981
Sony released the second generation called the PCM-F1 which reduced the processor size substantially.

28. 1982
The audio CD in the form we know it today, was released in the UK in September, 1982.

29. 1987
Introduced in 1987 for the professional studio market, digital audio tapes quickly claimed the high ground in professional recording industry circles.

30. 1991
Released in 1991, the first ADAT machine took the recording industry by storm.

31. 1989
The mp3 player was invented.

32. 2000
The versacorder was invented in 2000 and was used for talk shows.

33. 2001
The advanced audio coding is a newer codec algorithm made in 2001.

34. 2001
The first ipod was released on November 10, 2001.

35. Cites http://videointerchange.com/audio_history\