radish Wrote: > It is simply impossible (IMNSHO) to make a CD which will play in a > regular CD player but which cannot be ripped. Sort of true.
Any CD which needs to be able to be playable in a standard audio CD must have a red book compliant first session. Many copy-protected CDs use the simple expedient of having a second data session which is what the CDROM drive sees. This is trivially defeated by using a CDROM drive which has an option to ignore multi-session (eg. many of the Plextor range). But there is another, far more sinister form of copy protection. In this, the audio session on the disc is deliberately scattered with uncorrectable errors, and relies on the audio CD player's error concealment (via interpolation) to produce an acceptable playback. The overwhelming majority of CDROM drives either do not perform error concealment, or do so poorly. The upshot of this is that you have to rip the CD in a mode that doesn't detect the errors (eg. EAC burst mode), and you end up with a rip that has many short digital glitches. The only method I have found for successfully ripping these CDs is to play them on an audio CD player and record the SPDIF output in real time using a soundcard with a non-resampling SPDIF input. And of course this technique will work with *any* CD, no matter what "copy protection" technology it uses. The bottom line is: if you can listen to it, you can record it. -- cliveb _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
