[LAU] Pre-emphasis detection

[Fons Adriaensen]

On Sat, Apr 13, 2013 at 10:12:03PM +0100, R Kimber wrote:
> On Sat, 13 Apr 2013 16:19:45 +0000
> Fons Adriaensen wrote:
> 
> > Such a tool would have to 'know' how something is supposed to 
> > sound, i.e. what the expected average spectrum should be, and
> > then decide if a file is too bright or not. Apart from that,
> > once the CD is converted to a file there is no other way. So
> > you'll have to listen. 
> 
> Ah OK.  I thought there was a flag in the meta data.

On the CD that is so, there is a pre-emphasis flag in the Q
subcode and if you're lucky also in the TOC. Maybe some CD
ripping tools copy this data into the audio file, but I guess
most don't. 


Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)