I've hear various accounts on DAC jitter. As by design spdif does not
include a clock signal (the clock is derived from the data itself) it
seems that jitter could occur when an external DAC is used on either
transporter or SB. I've read different accounts that this jitter might
result in audible
radish;369855 Wrote:
SB2 can't play 24/96 itself. It used to be setup so it'd do a crude
(nasty!) downsample on the player itself, but it now detects the
problem on SC and transcodes it there. Currently it does so to mp3
though, which is clearly not ideal :)
So on everything but my
th00ht;370282 Wrote:
I've hear various accounts on DAC jitter. As by design spdif does not
include a clock signal (the clock is derived from the data itself) it
seems that jitter could occur when an external DAC is used on either
transporter or SB. I've read different accounts that this
th00ht;370282 Wrote:
by design spdif does not include a clock signal (the clock is derived
from the data itself)
This isn't true, SPDIF does include a clock signal. The problem stems
from the fact that the data and clock are combined, they aren't sent
separately. This allows the data to
Any clock recovery circuit, is likely to introduce 'jitter' to the
recovered clock, because that's the nature of synchronising one clock
to another. The recovered clock has to 'follow' the S/PDIF signal, and
so it will have to periodically adjust itself to keep sysnchronised.
You can hear the
OK, before the loonies come out of the woodwork..
Yes, the clock is sent with the data, but it has to be extracted.
Extracting it means that you need a phase-lock loop to do it. All PLLs
will exhibit jitter. How much depends on a lot of factors.
In the case of SPDIF, because it was not
ar-t wrote:
All PLLs will exhibit jitter. How much depends on a lot of factors.
The real question is does it matter at all?
Or perhaps do any audiophile level DACs exhibit enough to care?
In the case of SPDIF, because it was not intended for anything other
than testing, the clock contains
Listen to a system with lots of jitter, and one with much lower jitter.
If you can't hear the difference, then I guess is doesn't matter to
you.
Some folks are happy listening to MP3s on iPods. Does that matter? Not
to them, but maybe to others.
Pat
--
ar-t
ar-t wrote:
Listen to a system with lots of jitter, and one with much lower jitter.
If you can't hear the difference, then I guess is doesn't matter to
you.
This is silly. Where am I supposed to find said systems with lots of
or lower jitter?
If you are on this list, you most likely have a
My new Monster Power Center has arrived. In hooking it up according to
the instructions (hey, I read them for once) it has dedicated outlets
for the following types of devices; Video, Analog Audio, Ultra-High
Current Audio, and Digital among others (coax, Cat5, etc.).
Obviously my Amp gets one
Just got hold of a Linksys Etherfast wired-only router to compare
against my other switch.
--
maxrob200
maxrob200's Profile: http://forums.slimdevices.com/member.php?userid=21644
View this thread:
I'd think your DAC would be Digital.
--
Apesbrain
Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738
View this thread: http://forums.slimdevices.com/showthread.php?t=56471
Apesbrain;370592 Wrote:
I'd think your DAC would be Digital.
That was my first thought but they specify ...(Receiver, Processor,
etc.)... under Audio.
--
kphinney
SB3 (x2) and Transporter
Rotel RCD-1070
CIAudio DVA-2 w/ VAC-1 PS
JoLida 102B
Omega Grand 6's
AKG K501
pfarrell;370564 Wrote:
ar-t wrote:
Listen to a system with lots of jitter, and one with much lower
jitter.
If you can't hear the difference, then I guess is doesn't matter to
you.
This is silly. Where am I supposed to find said systems with lots of
or lower jitter?
Listen to a
ar-t wrote:
Listen to a decent CD player, that has a SPDIF output. Listen to its
analogue output, and then a typical outboard DAC. That is how.
Why would I have a decent CD player? I got rid of all audio CD players
within a year of getting my first SqueezeBox.
And a demonstration does not
pfarrell;370645 Wrote:
Show me the science.
You can start here:
http://www.aes.org/e-lib/browse.cfm?elib=6111
Regards,
Kim
--
krochat
--
Acourate - Inguz DSP - SB3 - GW Labs DSP (96kHz upsampler) - Apogee
Big Ben - TacT RCS 2.2X - 2x TacT S2150 - Vandersteen 3a Signature +
TacT W210
krochat wrote:
You can start here:
http://www.aes.org/e-lib/browse.cfm?elib=6111
Not without paying, I can't.
--
Pat Farrell
http://www.pfarrell.com/
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audiophiles mailing list
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Both DAC and SB3 on Digital - separate outlets if possible - gets my
vote.
--
NewBuyer
NewBuyer's Profile: http://forums.slimdevices.com/member.php?userid=7862
View this thread:
The outlets are separate and isolated. I really doubt I'll notice any
difference either way.
THanks. ANyone else feel free to chime in.
--
kphinney
SB3 (x2) and Transporter
Rotel RCD-1070
CIAudio DVA-2 w/ VAC-1 PS
JoLida 102B
Omega Grand 6's
AKG K501
pfarrell;370645 Wrote:
No, I believe in science and measurement. I was a PhD student for five
years. That is all about science. And I studied engineering for four
years as an undergraduate.
Are we supposed to be impressed?
I have been a practicing engineer for around 40 years, so there.
ar-t wrote:
pfarrell Wrote:
No, I believe in science and measurement. I was a PhD student for five
years. That is all about science. And I studied engineering for four
years as an undergraduate.
Are we supposed to be impressed?
Not at all. I'm just trying to explain to you that I'm not
pfarrell;370695 Wrote:
No religion, no snake oil. Show me the science.
You continue to mis-characterize my position. I'm not saying that
jitter
can't exist or can't matter in any absolute sense. I'm saying that no
one has shown science to show why it matters, what values matter, or
why
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