[MPlayer-users] RFC: docs update for "how to create a high quality DVD rip"

[Wayde Milas]

On Wed, 2004-06-09 at 07:50, ivanova wrote:
> On Tue, 08 Jun 2004 19:29:40 -0500
> Wayde Milas <wmilas at rarcoa.com> wrote:

> If all those tests were performed in a high quality studio setup it
> won't be very useful to anyone but people using a high quality studio
> setup. I don't think those tests are meant to prove that encoder x will
> sound better than encoder y when listening in studio conditions, and if
> they are that is clearly not right.

Look. You cant compare codec a to codec b correctly (in an absolute
sense) unless you do it by representing both signals the best way
possible. This needs to be done with high end gear, in a sound dampened
neutral room (studio).

> What they do prove, is that the average listener will not notice that
> big a difference between encoder x and y. Throw in the fact that we are
> talking about movie soundtracks which _generally_ needs less bits and
> you are meant to watch a movie while listening. Also the differences
> heard by the people doing the listening test are heard after
> specifically trying to find differences.

Ok, You are correct. But this is not a listeneing test on which codec is
superior to the other then. All it proves is that, on average gear, in
average conditions (with no mention on exactly what everage is), they
all sound "good enough". This isn't much of a test.

> So unless you are watching the movie with your eyes closed, intensely
> listing for artifacts on your $10000 speaker system, you probably
> won't hear a difference. I say probably because I have to allow for
> the fact that there will be cases where some people will hear
> differences more easily. But those will remain rare cases. 

This is completely subjective. I assert that you WILL hear the
difference on gear in the $3000 range. Not only that, the tests used
make no mention of the gear used so I can't compare my setup to the
listning test setup. Thus the tests are completely useless.

$3000 range is not stupid. Some people spend that just on thier hdtv
set.
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