The audio CD celebrates its 20th birthday



August 17, 1982. About two years after I was born, the first audio CD was mass produced. The company that had the scoop was PolyGram (part of Philips) and it was the CD: "Claudio Arrau's rendition on the piano".

A while after that the Swedish group ABBA released their album ABBA's album "The Visitors." that sold about 376,000 copies in the first year.



The Red Book - World Standard for Audio CDs

Philips and Sony worked almost simultaneously and initially independently on their own CD projects. Both companies started off with their own individual development programs, but finally agreed upon a common CD standard, which stipulates norms and specifications on data storage, error correction, etc., in the so-called Red Book (IEC-908). This standard has enabled every CD player and every CD-ROM drive to be able to play any audio CD.

The Ninth Symphony and the Diameter of an Audio CD

Philips originally suggested that a compact disc should have a diameter of 11.5 centimeters and a playing time of 60 minutes. In this regard, the Internet provides us with different stories that have one thing in common: the aim of getting the Ninth Symphony by Beethoven, one of the longest compositions with a playing time of 74 minutes, completely onto one audio CD. According to one story, the world-famous conductor Herbert von Karajan, whose concert recording appeared at that time on the PolyGram label, demanded that Philips introduce a CD with a sufficient playing time for his favorite piece.

Another version says that the wife of the then-Chairman and founder of Sony Akio Morita urged her husband to exercise his influence so that Beethoven could be appropriately honored.

Whichever story is true, a diameter of 12 centimeters was agreed upon, which made it possible to achieve a playing time of 74 minutes. Later came the CD single with a diameter of eight centimeters and a possible playing time of 21 minutes.

More about the history of the CD can be found in article on Yahoo, which is actually a release from Bayer, producers of Makrolon polycarbonate which is a main ingredient for modern day CD-R's.

Source: Yahoo.com

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