A little piece of CD history
The CD was conceived as a means of storing audio information, capable of replacing traditional at that time analog signal sources: magnetic tapes and vinyl records. Creators of the CD are Japanese company Sony and Dutch Philips. The first compact discs appeared in distant 1982, disk size was chosen quite an interesting way.
Executive Director of Sony suggested that new media should meet requirements of first and foremost connoisseurs of classical music. And the most popular classical work in Japan at that time, according to a sociological survey, was Beethoven's Ninth Symphony with duration of about 74 minutes. First cd duplication happened that very time. There is often a debate about the loss of quality when copying CDs in multimedia forums, although in fact, this does not happen, because the data on audio CDs is stored digitally and remains digital throughout all copying operations.
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