On 23/11/2014 10:40, Jim Lesurf wrote:
In article , Eiron
wrote:
Possibly a dumb question but do any CDs use pre-emphasis? Possibly some
early ones? And do modern CD/DVD players have the corresponding
de-emphasis facility? I have an old test CD with pre-emphasis on some
tracks. Perhaps I should do some measurements with it.

Yes, some discs do flag this. However in some cases this may be due to the
disc producers setting the flag in error.

Harder to tell which players do or don't take it into account. But I
suspect most 'ripping' programs don't.

What test CD?

Denon Audio Technical CD 38C39-7147.
GoldWave doesn't de-emphasise when ripping tracks.
I haven't found any other software that will show the flag.

--
Eiron.