"Jim Lesurf" wrote in message

In article
, Arny
Krueger
wrote:
"Serge Auckland" wrote in
message


Consequently, we never experienced this sort of
problem, and it was then acceptable for digital players
to clip at just over 0dBFS, albeit for the wrong reason.

Thing is, these FS overs are very rare.

Depends on the context. I have found various commercial
CDs that generate excursions above 0dBFS. In some case,
on many occasions during the CD.

Many = 10s, 100s, thousands,???

However these are almost
all rock/pop music CDs. Much rarer with classical or jazz
in my experience. The difficulty here is checking enough
CD issues to results that have any statistical meaning,
though.

I know how to make them, and I know how to keep them from happening.

As Jim says, this might account for why some CD players
sound different to others.

I doubt that. First, you have to find the good CD
players that actually do sound different from others.

At present that is the unanswered question which would
need testing in this context. There are CDs that generate
the excursions, and others don't. I have also see test
results which show that different players can give
visibly different results on something like a scope when
given 0dBFS material. But have no evidence that this
leads to audible differences.

I can explain why it is highly unlikely that they will.

There have been comparisons where the players seemed
indistinguishable. That might mean this doesn't matter.
But because of the above we'd now really need to check
what CDs were used as source material, and if they
produced any 0dBFS excursions or not. And if they did,
the effects might vary from case to case, which makes
this difficult to track down, except in terms of a
generalisation like that is 'usually' has no audible
effect, or whatever...

It's just a matter of knowing what's audible, and what is not.