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Sub-Channel Data Question



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#1 RightThere

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Posted 08 February 2017 - 10:30 PM

When it comes to 1990s Mixed-Mode CD PC games, such as Quake or Descent, what would actually be contained in the Sub-Channel data?  That's solely for audio, right? 

 

Since ImgBurn does not burn Sub-Channel data when you burn a CD, what would be missing from the newly burned CD, then?

 

Can someone clarify that?



#2 LIGHTNING UK!

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Posted 09 February 2017 - 03:45 PM

https://en.wikipedia.org/wiki/Compact_Disc_subcode

 

Sometimes they'd make use of the subchannel area as part of copy protection. I expect Quake predates that though.

 

ImgBurn reads and writes ISRC, MCN and CD-TEXT, so you aren't really missing anything - unless it's something 'unusual' that's stored in the R-W channels. With the exception of CD+G Karaoke discs, that's not going to be anything you'd ever see or use.


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#3 RightThere

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Posted 10 February 2017 - 03:02 AM

https://en.wikipedia.org/wiki/Compact_Disc_subcode

 

Sometimes they'd make use of the subchannel area as part of copy protection. I expect Quake predates that though.

 

ImgBurn reads and writes ISRC, MCN and CD-TEXT, so you aren't really missing anything - unless it's something 'unusual' that's stored in the R-W channels. With the exception of CD+G Karaoke discs, that's not going to be anything you'd ever see or use.

 

Quake 1 has Pre-emphasis on the audio, so Imgburn would not write that to a newly burned CD, then?



#4 LIGHTNING UK!

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Posted 10 February 2017 - 04:46 AM

That's covered by the PRE flag in the CUE file and the drive gets told about it in the 'send cue sheet' command.
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