David Looser wrote:

"Eeyore" wrote
David Looser wrote:

Mind you phase jitter caused by the mechanical parts of a poor
quality or faulty CD system *can* stress the error-correction to the
point where the playback quality is compromised)

NO. Pure horse manure. The digital signal is buffered to buggery. A bit of
jitter won't bother it. This is an example of analogue-style thinking
being inappropriately attached to digital signal paths.

It's not "horse manure". No amount of buffering will cure the problem of
recovering data from a badly jittered data-stream. It's the clock recovery
that is affected. I can tell that you've never had to design clock-recovery
circuits.

Actually .... I have been involved in a project to determine weaknesses of early
examples of precisely this kind of circuit. There certainly were problems in the
early days.

If it's *badly* jittered you have a point but I've not seen jitter greater than
a couple of ns on digital audio data streams.

Graham