Computer Accessories
How does a player read a CD?
Answered by
Science Channel
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Science Channel
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While the music on a CD is a series of ones and zeros, there is other information encoded onto the disc to make it readable to a CD player:
- A CD track is marked with a time code that lets the CD player know at any given time what part of the track it is reading.
- A table of contents is encoded at the beginning of a discapos;s track so a player knows where different songs are on a disc.
- Extra "filler" data are included onto a track so there are no long strings of ones or zeros, which can confuse a CD player.
- Extra data are included to help a player fix any mistakes.
- Data are interlaced in a pattern instead of being recorded sequentially. This also makes it easier for a player to fix any problems.
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