I found a ripper, icedax, that will automatically apply de-emphasis if it finds it on a CD, and it's very thorough about finding it, not just looking in the TOC. According to the authors:
> > Some older audio CDs are recorded with a modified frequency response > called pre-emphasis. This is found mostly in classical recordings. The > correction can be seen in the flags of the Table Of Contents often. But > there are recordings, that show this setting only in the > subchannels. If this option is given, the index scanner will be started, > which reads the q-subchannel of each track. If pre-emphasis is indicated > in the q-subchannel of a track, but not in the TOC, pre-emphasis > will be assumed to be present, and subsequently a reverse filtering is > done for this track before the samples are written into the audio file. > Icedax can be used just to get this subcode info if you don't want to use it as a ripper. I haven't done much comparison of their filtering with the sox deemph filter. BTW, pre-emphasis was used by some labels well into the 90s. (I know that still seems like ancient history to many of you). I have many choice Supraphon and Bis CDs that use it. I'd estimate about 3% of my CD collection has pre-emphasis. -- Daverz ------------------------------------------------------------------------ Daverz's Profile: http://forums.slimdevices.com/member.php?userid=32335 View this thread: http://forums.slimdevices.com/showthread.php?t=34336 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
