[TriLUG] Sound recording/editing/archiving - where to start?

Jeff Jackowski jeffj1 at hiwaay.net
Fri Oct 25 00:14:07 EDT 2002


On Thu, 24 Oct 2002, Thomas C. Meggs wrote:

>|     On the distinction between 700 and 640 disks, I'm probably dating
>myself
>| but the size difference used to be the only thing that differentiated
>Audio
>| from Non-Audio blank CD's. Then someone had the good sense to realize that
>| they could save money if they just made the 700 size. ---Hope you're doing
>| well.---Al
>
>I'm quite sure you can actually use the full length of the CDR for
>audio, and not limit yourself. In fact Nero even has options for
>"overburning" - if I understand it correctly, if the media has more
>space you can go above and beyond the specifications of both your CDR
>and the media you bought, with mixed results of course.

I think what might be casuing some confusion is the sector size. Audio CDs 
use 2324 byte sectors, and most data CDs use 2048 byte sectors. Either 
way, there are the same number of sectors. The smaller 2048 byte sectors 
use the freed 276 bytes for additional error detection and correction 
data.

I'm told overburning refers to writting data in what would normally be the
track leadout.

As was mentioned earlier on the thread, there are two sizes of CDs. You 
should be able to put about 800MB of PCM data on a 700MB CD when it is 
written as an audio disk (I'm not refering to the special for audio CD-Rs 
that are for CD writters in home stereo equipment, just to the structure 
of the data).

About 730MB of PCM data should fit onto the smaller 640/650MB CDs. Maybe 
this is where the remembered size difference comes from?

-- 
Jeff Jackowski
        http://ro.com/~jeffj/




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