opaqueice wrote:
Even if you round the numbers against it, calling it 12 years
and say that Moore's law is 2 year cycles, you should expect
2^6 = 64 times "better" in 12 years.
Moore's law's got nothing to do with it - we're talking about the same
old spdif over the same old cable, not transitors on a chip.
I disagree. Moore's law allows chips to get better, smaller and cheaper.
A while ago, a senior engineer at SD said that DAC chips get massivly
better every couple of years (I'll paraphrase since I can't quote
chapter and verse).
as we're discussing bandwidth-induced jitter, the only that can
possibly have changed is the material the fibers are made from, and the
reference above (from 2004) indicates nothing much has changed - the
(low-end) numbers match what Fourre says is typical.
Assuming that the modern chips are still susceptable to
jitter at the same level. Some things that Fourre wrote about,
such as beats between the Nyquist rate and the wire length
are physics. But there is no reason to believe that they are
as important as they were 13 years ago.
Anyway, if you don't like that reference please go find a newer one and
enlighten us.
I don't see it as being my job to prove a negative.
Providing a citation that dates to when a 486/66 was state of the art
is of historical interest. But signal processing has improved.
There are serious parts of the audiophile art that are not
well reflected by engineering measurements. A classic example
of this was the belief in the late 70s that an amplifier's measurements
explained all, and so all amps sound alike. I know to my ears that
my Classe amp sounds different than the Sony receiver that it
replaced.
--
Pat
http://www.pfarrell.com/music/slimserver/slimsoftware.html
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