And so it came to pass, on 08-11-96 16:46,
that Drew Hohmann spake unto Cameron Hall:
DH> So the CD player rotates the CD at different speeds as it reads the
DH> disc from inside to outside? You'd think that it would be
DH> difficult to set each CD player to such exact specs,
Not really -- just monitor the data stream coming off the disc and maintain
the speed to keep it constant.
DH> John has a good point here. I thought that the CD player spun the
DH> disc at a constant rate, like a record player. Though now you have
DH> me confused. A record player rotates at a constant rate, yet even
DH> though the inside edges and the outside edges travel at different
DH> speeds, their is no difference in pitch between the outside and
DH> inside edges. (Meaning if you had a 33 record playing at 45rpm,
DH> it'd be higher pitched, yet even though the edges are traveling at
DH> different speeds, it's the same pitch throughout the record).
That's because it's recorded the same way. If you play with the pitch
control on a tape deck while recording, then adjust the pitch control exactly
the same way on playback, there's be no audible change in playback.
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Q: Why don't blind people skydive?
A: It scares the heck outta their dogs!
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* Origin: la Point Strangiato... (1:153/7040.106)
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