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Explain "the offset for the first track"?
Old 15th January 2007
  #1
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Explain "the offset for the first track"?

I've read an article written by Jay Frigoletto. http://www.promastering.com/pages/te.../tt-5_mac.html. "You need to know about the red book spec and keep everything within it as far as the offset for the first track". What do he mean with "as far as the offset for the first track". Isn't it enough to set the first CD marker? Can someone explain this to me?
Old 15th January 2007
  #2
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Cellotron's Avatar
 

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Red Book specs require a minimum of a 2 second "pre-gap pause" prior to the first track's index point. This pre-gap can generally be extended without a problem - and while it's not in book spec a disc can even be generally safely manufactured with the pre-gap containing audio for a "hidden track."
However - if the pre-gap pause is less than 2 seconds your master disc will be rejected by the replicator.

Luckily the vast vast majority of disc burning software out there will now automatically insert a 2 second pre-gap pause when burning a CD Audio CD-R. So for most part this is a no-brainer to do now.

One other issue regarding the start of your CD is that CD players all have varying "unmute" times - i.e. most of them will start playing right from the track index point - but some players, like older ones, cheap portables or very often car players - will actually clip off the first few milliseconds after the track index point - so that very often it is a good idea to have around 200ms - 333ms of silence after the index point prior to the start of the audio in order to insure that the start of the track will not be cut off by any player.

Best regards,
Steve Berson
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