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You are here: MacNN Forums > Software - Troubleshooting and Discussion > Applications > One CD skips on PB, not on CD player.

One CD skips on PB, not on CD player.
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Senior User
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Jan 18, 2006, 10:35 PM
 
There are heaps of skip and track errors on this one CD I imported to my PowerBook. However, on a CD player, the CD plays fine.

This is quite embarrasssing because I took the CD back to the store to get it replaced and they played it on their machine without a problem, and kind of looked at me in a way I didn't like.

This is not an import problem because the CD plays on my PB with skips, but not on an ordinary CD player.

The skips -- noisy bleeps and crackles -- are in the same place on every track. They start 9 seconds into the track and finish after 8 seconds (17 seconds into track).

I can't explain this. What is the difference between playing a CD on a CD player and a computer? Why should you hear skips on the one and not the other?

Is a computer more sensitive to track errors?

How can I re-import the CD without the skips?

My preferences are already set to "Use Error Correction when reading audio CDS".

Any suggestions?
(Last edited by Ulrich Kinbote; Jan 19, 2006 at 01:16 AM. )
     
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Jan 19, 2006, 01:15 AM
 
Any reason why my posts are being ignored?
     
Clinically Insane
Join Date: Oct 2001
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Jan 19, 2006, 01:22 AM
 
Pure audio CD players like that tend to smooth over problems more easily than the PowerBook's CD drive. I don't know enough about the construction of either to explain exactly why.
Chuck
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"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
     
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Jan 19, 2006, 02:51 AM
 
Originally Posted by Ulrich Kinbote
Any reason why my posts are being ignored?
Might be your sig not meeting the sig guidelines.
     
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Jan 20, 2006, 01:32 AM
 
What? People are refusing to respond to a post because the sig is "not allowed"?

Come on.

No one is that pathetic.
     
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Jan 20, 2006, 02:22 AM
 
What's pathetic is starting to whine that you're being ignored after THREE HOURS. But that's probably just my opinion.

Generally, audio CD players will assume that CDs aren't read properly and have much better error correction built-in (typically, about 10% or more of what you're hearing from an ordinary CD player is fake, i.e. interpolated by a chip, rather than present on the recording). Audio CDs have virtually no on-disc data validation schemes for this reason (which is also why audio CDs aren't verified after they're burned - it doesn't matter; they'll just sound a little worse if messed up).

Data CDs have data correction checksums built into the format, and that is what computer drives are optimized for.

There are other factors involved.

Better Audio CD players will often not have nearly as much error correction circuitry (since that might also "correct" details that you actually WANT to be there) but invest in a better drive mechanism and laser instead, reducing read-errors right off the bat.
     
   
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