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( II ) On an audio compact disc ( CD ) , digital bits of information are encoded sequentially along a spiral path. Each bit
II On an audio compact disc CD digital bits of information are encoded sequentially along a spiral path. Each bit occupies about A CD player's readout laser scans along the spiral's sequence of bits at a constant speed of about as the CD spins. a Determine the number of digital bits that a CD player reads every second The audio information is sent to each of the two loudspeakers times per second. Each of these samplings requires bits and so one would at first glance think the required bit rate for a player is
where the is for the loudspeakers the stereo channels Note that is less than the number of bits actually read per second by a player. The excess number of bits is needed for encoding and errorcorrection. What percentage of the bits on a are dedicated to encoding and errorcorrection?
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