Andrew L. Weekes Wrote: > I've had some similar issues with recent releases, the cure I elected to > use being to make sure the disc is clean and rip in burst mode. I did a test recently to compare various ripping strategies: 1. EAC in burst mode. 2. EAC in secure mode but with c2 switched off. 3. Plextools with Audio error detection switched off. 4. Record the SPDIF data stream from an audio CD player.
Methods 1, 2 and 3 all produced bit-identical files. Method 4 produced a file that was different in a number of places (presumably due to the CD player having a different error concealment algorithm from the ripping drive). I inspected the waveforms at the places where they were different to check on the quality of the concealment. I was surprised to see that the visual shape of the interpolated waveform looked better on the rips than it did from the audio CD player (although I could detect no audible differences). The rips were done on a Plextor PX712A, and the CD player used was a Micro-Seiki CD-M100 (which has a Philips CDM1 mechanism). My conclusion is that provided you use a decent drive (such as a Plextor), ripping in burst mode will give essentially perfect results on those discs which use a strategy of incorporating uncorrectable errors. That said, it might be better to use secure mode with C2 switched off: this way concealment of deliberate errors will be the same each time, but genuine read errors due to scratches/dirt/etc may be detected. -- cliveb _______________________________________________ ripping mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/ripping
