I think I got the data track process. If you use CDMage with a full CDRWin image to extract the data track, you get it without gap already, 352800 bytes smaller than a data track ripped directly with CDRWin or IsoBuster.
It seems to me that EAC appends correctly the gap at the beginning of the first audio track, using the "appends gaps to next track" option. All the discs I have report this gap info with EAC:
Track01 (data) Gap 2:00
Track02 (audio) Gap 2:00
Track03 (audio) Gap 1.74
Track04 (audio) Gap 1.74
From the third track on, the gap is always 1.74 seconds, while the first 2 gaps are 2 seconds.
The most confusing thing is the offset issue. AccurateRip reports my drive has +6 offset, so 6-30 = -24
Every disc has a different offsent, usually it's huge because the calculated sector which should end the first track is full of data, silence begins after a couple sectors, 6000+ bytes after the calculated end.
For example Record of Lodoss War has 6796 bytes after the end calculated by CDRWin, 6796/4 = 1699 samples
So the offset I should put in EAC is 1699 = (-24) + x ; x = 1723 right?
I get strange results, for example :
Funky Horror Band +1686
Record of Lodoss War +1723
Is it normal to have such high offsets? Are my calcutions wrong?
I think it would be great to have other dumps to compare my results with. I have the following original discs, all japanese, if someone has them too can he help me comparing?
Yumemi Yakata no Monogatari
Lunar the Silver Star
Rise of the Dragon
Prince of Persia
Super League CD
Sega Classic Arcade Collection
F1 Circus CD
Quiz Scramble Special
Funky Horror Band
Sega Games Can Vol. 1
After Burne III
Record of Lodoss War
Shining Force CD