Audacity new
> (version 1.2.0-pre1) vertical scale expansion feature is
> inadequate to examine samples down to within 1 amplitude bit of
> silence (-90 dB for a 16-bit sample, or -138 for a 24-bit
> sample).
Might that depend on your display resolution? If you zoom an audio
file to 'fit window' vertically, you're going to see more detail the
higher resolution your display has, surely?
Personally, I find 1024x768 isn't enough when viewing multiple tracks.
Cheers
Daniel