Chelvam said:
If you don't - the other guys will win.
Win what? There's no "prize" here. At least not one worth winning.
The problem has been solved, ages ago. That a bunch of yahoos in
the high-end biz can't get their acts together and fix what ain't
broken (often breaking it MUCH worse) is hardly any fight worth
fighting. It's like being paired in a spelling bee against a garden
slug: Yeah, I can win, but so what?
But do all CD players implement the known fixes against jitter
to reduce it below audibility
What evidence, other than a lot of CLAIMS, is there to suggest
that it is an audible problem to begin with?
(my guess is no since the CD's sound for consumer grade stuff
seems to be getting worse as the decks get cheaper)?
So you are already approaching the question with a preconcieved
notion in hand.
Do all amplifiers implement the known, mature fixes to respond
properly to transients?
Where's the e3vidence, other than a lot of claims, that the
problem exists to begin with?
Probably not.
So you are already approaching the question with a preconcieved
notion in hand.
And I don't think mistakes would be relegated to the "high end."
Maybe, maybe not. But for a HUGE class of "problems" the
high-end biz has shown an uncanny ability to screw up the
solution to a far greater degree than pretty much anywhere
else.
Let's look SPECIFCALLY at the jitter issue as an example.
The entire rest of the electronics industry knows full well
that the ONLY time jitter is of ANY relevance is but at one
place: the conversion between the analog domain and the digital
domain, or vice versa. NO WHERE ELSE DOES JITTER HAVE ANY
RELEVANCE WHATSOEVER. And a classic proof of that is the fact
that the data coming of a CD is not only "jittered," it is
completely scrambled, out-of-order (intentionally).
If you don't get it right at the exact point of A/D or D/A, then
EVERYTHING else means absolutely nothing.
That's why in the real world, careful attention is paid to low
phase noise sample clocks AT THE SAMPLE CONVERSION POINT. That's
why careful attention is paid to double phase-lock-loop clocking
schemes that decouple the sample conversion clock from the incoming
data stream, and so forth.
And that's why the high-end idiotic nonsense of "dejitter" boxes
and fancy cables are nonsense. That's why multi-thousand dollar
DACs with incompetent clock recovery, miserable mixed-signal
design and layout techniques are such travesties.
You think that the high-end DOESN'T make more mistakes? Please,
show us the kind of nonsense like green pens, wooden pucks, magic
bricks, water-filled cables, "blue-dithering LED," and all the rest
prevail to the extent they do in the high-end biz.
So the "prize" as it were, would be true guidance and elevation
of good design standards as requirement.
That prize was already won decades ago by real engineers. So when
wil the high-end audio biz finally grow up?
+---------------------------------------+
| Dick Pierce |
| Professional Audio Development |
| (1) 781/826-4953 Voice and FAX |
|
|
+---------------------------------------+