Since December 4, 1877, audio technology has sky-rocketed. Thomas Edison was the first person to record and play back the human voice when he created the phonograph. Since the phonograph, there has been numerous amounts of audio technology inventions such as the following: the gramophone, open reel to reel, the compact cassette, the 8 track cartridge, the CD, the digital audio tape, and all the way to the MP3 player.

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