Daverz;563575 Wrote: 
> Could you tell us more about what was involved in supporting
> AccurateRip?

Sure.  The algorithms for calculating the AccurateRip ID and checksums
have been known for a while now.  You can get a perl script at
http://www.hydrogenaudio.org/forums/index.php?showtopic=53583 that can
verify a rip, provided it's in the form of a .wav file + cuesheet.  I
originally used a modified version of this that could take multiple
.wav files + cuesheet. I later wrote my own version that has one
program (a wrapper around the cd-info command, written in perl) to
calculate the AccurateRip disc ID from the TOC data (along with CDDB
and MusicBrainz disc IDs), one program (written in C to be fast) to
calculate the checksum, and a perl script which does the actual lookup
and verification.

I store the AR disc ID in a tag so that I can easily re-verify a disc
(or individual tracks) later without needing a cuesheet, in case the
disc wasn't known to AccurateRip at the time I ripped it.  I also store
the checksum and confidence values in tags so that I can search for
tracks that failed verification and either re-verify or re-rip.

I'm going to be cleaning up my scripts in the next day or two, and I
can post a link if anyone's interested.


-- 
perilsensitive
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