--- Tim Wunder <[EMAIL PROTECTED]> wrote: > Douglas J Hunley wrote: > > Looks like Phillips actually has a clue! Go Phillips! > > > OK. I admit it. I'm confused... > If these "protected audio" CDs are playable in an ordinary CD player, > how, exactly, are they copy protected? Can't I just plug the output of > > my CD player into the input of my soundcard and record the audio as a > .wav, then burn it to CD?
OK, here's a layman's explanation of how this all works. Don't ask me for the details, cause i don't remember them. Basically, your ordinary run-of-the-mill audio CD player (stereo etc) is only capable of playing audio CDs. If you feed it a data CD you'll get alot of staticky noise. Additionally, audio CD players aren't very picky about small errors on the CDs. A data CD player on the other hand needs to have the intelligence to detect & correct for data errors, because if you're working with data, you don't want everything to blow up just because a single bit is flipped. However, the ability to correct for errors is still limited. If 1KB of data is fubarred its going to barf on it. Problem is, the audio CDs with copy protection are basically loaded with intentional data errors. The thinking is that normal stereo CD players will just waltz along past the errors not knowing the difference, yet the CDROM drives will attempt, quite feverishly, to correct for the errors, and fail miserably, thus preventing reading of the audio CD, thus preventing copying of the audio CD. HTH, Lonni ===== ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Lonni J. Friedman [EMAIL PROTECTED] Linux Step-by-step help: http://netllama.ipfox.com . __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ _______________________________________________ Linux-users mailing list Archives, Digests, etc at http://linux.nf/mailman/listinfo/linux-users
