> On Behalf Of Jason Stubbs > Sent: Friday, June 16, 2006 10:06 AM > On 16/06/06, Michael Coulter <[EMAIL PROTECTED]> wrote: > > On Fri, Jun 16, 2006 at 12:01:35PM +0900, Jason Stubbs wrote: > > > Unless the quality of the CD has deterioated, where does the > > > random element come from? > > > > http://www.stereophile.com/features/827/ > > > > If you start reading about the low-level details of C/DVDs and > > you don't have a lot of faith in math, you'll be scared to death > > you ever put data on an optical disc. > > Very interesting article. However, I still don't see how ripped audio > might change on each ripping. The article states that E11 and > E12 errors > are common but that the original data is fully > inferrable(sp?) and that > E22 errors are usually caused by damage. I can see how > audibal changes > could occur if CD players use the amplitude obtained from the CD > directly without first going fully digital, but otherwise... > > Anyway, enough idle conjecture. When I get home I'll give it a try > myself and then do further research. :)
You can get bit identical rips of audio CDs, meaning you can compare the track's CRC, hash or anything else. EAC (www.exactaudiocopy.de) is one solution but it's Windows only. I haven't ripped under OpenBSD so I have no recommendation for it. www.hydrogenaudio.org is my source of authoritative information regarding digital audio. Check it out. Regards, Daniel.
