[AkBKukU]

I'm curious if you have a specific example of an album with the crowd noise between tracks like that? I collect and rip hundreds of CDs and am always on the look out for edge case discs to further hone my tools.

On your pregap + 99 indexes remark, the "pregap" is the space between index 00 and 01 which continues on up to index 99. Players seek to index 01 as the start point of the track. There is no separate pregap designation. I've paid special attention to this because it is a difficult problem to solve as many discs have space between tracks stored in index 00-01 but rarely is there anything audible in there after the first track. The only example I have of this is a specialty music sample disc, Rarefaction's A Poke In The Ear With A Sharp Stick, that has over 500 samples on the disc accessed by track + index positions.

As a sidebar based on the later comments in the thread, I've made it a habit to rip and store every audio CD as BIN/CUE+TOC using cdrdao. This allows me to go back and re-process discs I may have missed something on. But that is imprecise even because it usually breaks bluebook discs with multiple sessions to store data due to absolute LBA addressing. Also the ways different CD/DVD drives handle reading data between index 00-01 on track 1 is maddening. Some will read it, some will error, and the worst is those that output fake blank data.

[meindnoch]

>I'm curious if you have a specific example of an album with the crowd noise between tracks like that? I collect and rip hundreds of CDs and am always on the look out for edge case discs to further hone my tools.

E.g. the Japanese version of Flying Lotus' album "Until The Quiet Comes" has a pregap of 5 seconds before the 19th track, to separate it from the rest of the album, as it's a Japanese-exclusive bonus track.

[mmmlinux]

Is it crowd noise or just a gap? I'm also interested to see one of these skipable crowd noise CDs.

[hcs]

Not sure why I didn't think to mention this before: One tool you might consider is redumper, it's designed in particular to handle multisession CDs, and it attempts to over-read into the disc lead-in and lead-out to catch data outside of the range covered in the TOC (particularly common in older CDs). It only outputs a final split bin+cue, but everything read, including scrambled data, toc, and subchannel/subcode, is saved for future processing. The bin+cue can be used with ISO Buster (and probably other tools) to access Enhanced CD filesystems. Feel free to reach out if you need some tips, this is what I use for my collection.

https://github.com/superg/redumper/

Caveat: It is mostly intended for use with the low-level features of Plextor drives, so CD support on other drives is relatively limited; in particular it doesn't have any overlapping read paranoia-style features. The recommendation is to dump twice to confirm; it's running straight through without seeking so that's usually still quite fast.

[hcs]

Seven minute pregap on disc 1 track 4 of https://vgmdb.net/album/5549 , it's a whole long discussion between songs, with some audience cheering. VGMdb follows the "append pregap to previous track" convention, that's why track 3 looks so long. There's similar but shorter gaps with banter on tracks 2 and 7.

Cuesheet looks like:

    TRACK 04 AUDIO
      INDEX 00 00:00:00
      INDEX 01 07:34:43

Edit: Probably covered by your sfx disc, but this one has 17 indexes on track 1: https://vgmdb.net/album/3091

That messed with a tool that only anticipated one index in track 1 for detecting hidden pregap audio, cuesheet is like:

    TRACK 01 AUDIO
      INDEX 00 00:00:00
      INDEX 01 00:00:37
      INDEX 02 00:11:40
      INDEX 03 00:37:33
      ...