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Full Version: When is the accurate rip checksum being created?
Hydrogenaudio Forums > CD-R and Audio Hardware > CD Hardware/Software
Dot
Hi,

at what time does EAC create the accurate rip checksum? On the basis of the written wav file or directly after the ripping process just before writing the wav file?

Example 1: If the checksum is created before writing the wav file, that file could get corrupted while writing on the hard disc. Then the checksum would be correct although the file is not an exact audio copy.

Example 2: greynol said, when using the PX-230A “the last track will be padded by a blank frame and will be longer than the original.” If the checksum is created after reading the audio CD but before writing the wav file, the accurate rip checksum would probably be correct which, in fact, it is not.
greynol
QUOTE(Dot @ Sep 7 2006, 12:21) *
greynol said, when using the PX-230A “the last track will be padded by a blank frame and will be longer than the original.”

huh.gif Huh?

I didn't say that about the PX-230A. I said that about what PlexTools does so that the last track of a disc can be burned so that the last samples don't get replaced by silence.
pest
QUOTE

Example 1: If the checksum is created before writing the wav file, that file could get corrupted while writing on the hard disc. Then the checksum would be correct although the file is not an exact audio copy.


what if the checksum is created from the wave-file and your harddisk-controller goes nuts
every now and then? you never can be 100% sure...
if you're one of those human who even can't trust their own computer make a crc32 for the pcm-data yourself.
spoon
It is the raw data from teh CD Drive. AccurateRip is not affected by the first or last track (where cd drive offsets come into play).
Dot
QUOTE
I didn't say that about the PX-230A. I said that about what PlexTools does so that the last track of a disc can be burned so that the last samples don't get replaced by silence.

Oh, sorry. I got it wrong.

QUOTE(pest @ Sep 7 2006, 13:33) *

every now and then? you never can be 100% sure...

I'm just interested. Actually I keep files even if EAC says there could be errors. I'll check the suspicious position but if I don't hear anything weird I keep the file.
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